GRUNDIG Service Manual

Table of Contents

General Section

Test Equipment

Grundig AG, Business Unit Instruments, Test and Measuring Systems, Würzburger Str. 150, D-90766 Fürth, can provide their catalog "Test and Measuring Equipment". Contact Grundig AG for details.

General Note

Spare Parts Lists: The last four figures in the spare part designation refer to the last four figures of the chassis or module part numbers. For example: 3100 ≙ 29704 004 3100.

Type Label on the set

In addition to the TV set type and chassis designation, a "Version number" (e.g., VNA) is printed on the type label. This identification provides information on the technical/mechanical production status. When ordering spare parts, it is essential to provide the following information: type of TV set (e.g., "T 51-731 text"), chassis name (e.g., "CUC 7303"), version number (e.g., "VNA"), and the spare part number.

Technical Data

Module List

Safety Advices

The X-radiation generated in these TV sets complies with the X-radiation Regulations (January 8, 1987), issued by the Physikalisch-Technische Bundesanstalt (federal physiotechnical institution). The high voltage for the picture tube and the resulting X-radiation depend on the precise adjustment of the +A power supply. After every repair of the power supply unit or the horizontal deflection stage, it is imperative that the EHT for the picture tube is checked and re-adjusted if necessary. To prevent consequential damage to the chassis or the picture tube, the integrated protective circuits are allowed to be put out of operation only for a short time. When replacing the picture tube, use only the types specified in the spare parts lists.

Service Notes

Disassembly of the chassis: Before disconnecting the chassis connecting leads, observe how they are routed to the individual assemblies such as the mains switch panel, keyboard control panel, picture tube panel, deflection unit, or loudspeaker. Upon completion of repairs, the leads must be laid out as originally fitted at the factory to avoid later failures or disturbances.

Mains cable: The TV receiver must only be operated with an original mains connecting cable with an integrated interference suppressor choke in the mains plug. This mains cable prevents interference from the mains supply and is part of the product approval. For replacement, exclusively order the mains connecting cable specified in the spare parts list.

Circuit Diagram Symbols

Operating Hints

This chapter contains excerpts from the operating instructions. For further particulars, refer to the appropriate user instructions, the part number of which is indicated in the relevant spare parts list.

Assigning programme positions with the automatic tuning system ATS

The set is equipped with the automatic programme position search system ATS, which performs programme position assignment. Users can start the automatic search and then sort the programmes in their preferred sequence. Programmes found multiple times or with poor reception can also be deleted from the programme list.

1. After switching on the set, the "LANGUAGE SELECTION" page appears. A selection can be made from several languages for the dialogue between the user and the TV. The user guide displays appear in the selected language.
2. Select the dialogue language with the up/down buttons and confirm with the OK button.
3. Select the country with the up/down buttons and confirm with the OK button. If the country is not found in the list, select "Others" and confirm with the OK button. The "AUTOMATIC TUNING SYSTEM" page appears.

Note: The "AUTOMATIC TUNING SYSTEM" page can also be called up directly from the "DIALOG CENTER". Depending on the number of programs received, this activity can take one minute or longer.

Deleting programmes

1. Select the programme to be deleted with the up/down button.
2. Delete the programme with the AUX button.

Note: To delete more programmes, repeat, beginning with step 1.

Sorting programmes

1. Select the programme to be re-sorted by pressing the up/down button.
2. Mark the programme with the OK button.
3. Select a new programme position with the up/down button.
4. Save the setting with the OK button.

Note: To sort more programmes, repeat, beginning with step 1.

Exit setting

Exit setting by pressing the TXT button.

Note: Pages "AUTOMATIC TUNING SYSTEM", "SORT" (under "Programme sorting") and "LANGUAGE SELECTION" can also be called up directly from the "DIALOG CENTER".

Copying video tapes via the TV set

Users can copy video recorder/camcorder tapes onto another video recorder. Possible scenarios include: camcorder (AV3) to video recorder (AV1), video recorder (AV1) to video recorder (AV2), video recorder (AV2) to video recorder (AV1). Users can switch to TV viewing during recording. Copying from an SVHS video/camcorder to an SVHS video/camcorder is not possible.

1. Select the AV program position with the AV button.
2. Press the AUX button.
3. Activate the copy function with the AV button.
4. Start playback/copying on the camcorder/video recorder. Copying will start, and users can view any TV programme without interfering with the recording.

Note: To switch off the copy function, repeat steps 1 to 3.

Connecting a camcorder to the AV 3 socket

Open the flap by pressing it. Connect the yellow socket (VIDEO IN) of the TV set to the corresponding picture socket of the camera recorder. Connect the white and red sockets (AUDIO IN left/right) of the TV set to the sound sockets of the stereo camcorder. Alternatively, connect the white socket (AUDIO IN left) of the TV set to the sound socket of the mono camcorder. Press the AV button repeatedly until the set displays "AV3".

Playback: Switch on the camcorder, insert the cassette, and start playback. The TV set will display the picture and sound information from the external device.

Headphones

Insert the headphone connector (3.5 mm Ø jack) into the headphone socket on the front side of the set. The volume for the headphones can be adjusted separately (headphone impedance max. 32Ω).

Changing the sound (stereo/two-tone, mono) of the headphones:

1. Select page "SOUND" with the up/down button.
2. Select the line "" and with the up/down button select the desired tone: For stereo: "stereo" or "mono"; for Nicam stereo: "stereo" or "analogue"; for two-tone transmission: "Dual A" or "Dual B".
3. Switch off page "SOUND" with the TXT button.

Adjusting the volume of the headphones: Press the AUDIO button and then adjust the volume of the headphones using the up/down button. The altered value is displayed on a scale.

Switching picture formats

PALplus is the compatible further development of PAL color television, which has proven itself over decades, into a new 16:9 picture format. This has been developed by European broadcasting corporations and entertainment electronics corporations. PALplus transmissions in 16:9 format are specifically noted in relevant magazines and in videotext (ARD, ZDF). The unit automatically switches to the 16:9 format during PALplus transmissions. Under bad reception conditions, it is possible for the picture format to switch between 16:9 and 4:3. In this case, the automatic picture format switching function can be turned off. Refer to the "Service" chapter for information on this topic.

With the OK button, users can choose between the picture formats: "Automatic format", "Format 16:9", "CINEMA", "Format 4:3", and "PANORAMA".

Automatic format: During 16:9 transmissions, the unit switches automatically to the "16:9" picture format. During 4:3 transmissions, the picture is always displayed to fill the entire screen. This setting is only possible if the picture switching format in the "Service" menu is set to "manual".

16:9 picture format: During 4:3 transmissions with the "16:9 picture format" function selected, the picture appears spread out horizontally. The picture geometry is stretched out in the horizontal direction.

CINEMA: This operating mode is designed primarily for transmissions in the 16:9 format. The black stripes normally seen above and below the picture are overwritten. The Cinema operating mode displays 4:3 pictures so that they fill the entire screen. The transmitted pictures are enlarged, which means some picture content on the top and bottom of the screen is lost. However, the picture geometry is maintained.

PANORAMA: This operating mode is designed for cinema films transmitted by broadcasters with extreme width/height ratios. For 4:3 transmissions with the "Panorama Zoom" function selected, the picture appears spread out horizontally. The picture geometry is stretched out in the horizontal direction.

With actual 16:9 signal sources fed in from a separate decoder (for example, a digital television system set-on-top decoder) via the Euro AV socket, the picture is completely filled and the picture geometry is correct.

Short description for videotext operation

Select videotext pages using the numeric buttons (1-0). Call up videotext table of contents. Page back (red). Page forward with overflow to next chapter (green). Enlarge page; call up sub-page directly. Move on to next chapter with overflow to next topic; move on to next "10" page (yellow). Move on to next topic; move on to next "100" page (blue). Answer release; stop page. Call up symbol line using AUX button.

Symbol explanations: 1: Enlarge character height. 2: Bridge waiting time during TV operation. 3: Call up sub-page directly. 4: Answer release. 5: Page-freeze.

Special Functions

The following adjustments are carried out using the "DIALOG CENTER". Call up "DIALOG CENTER" with the button and OK button. Adjustments are always terminated by pressing the TXT button.

TV on with...

If the set is frequently used as an AV monitor (e.g., with a camera as a monitoring system or with a satellite receiver), this function can prioritize the programme position "AV". After switching on with the on/off switch, the programme position "AV" will appear instead of "P 1".

1. Select the line "SPECIAL FUNCTIONS" from the "DIALOG CENTER" with the up/down button and confirm with OK.
2. Select the line "TV on with" and select the desired program position "Prog 1" or "AV" with the up/down button.

Picture/sound scale

To adjust volume, brightness, and color contrast, scales appear. These may be switched off.

1. Select the line "SPECIAL FUNCTIONS" from the "DIALOG CENTER" with the up/down button and confirm with OK.
2. Select the line "Pic./sound opt." and select "off" with the up/down button.

Station name (SERVICE-functions)

Some broadcasting stations broadcast their station name. When changing programme position, this is briefly displayed. This display can be switched off.

1. Select the line "SERVICE" from the "DIALOG CENTER" with the up/down button and confirm with OK.
2. Select the line "Station name" and select "off" with the up/down button. When changing programme position, only the number of the programme position is displayed.

Equalizing the volume

The volume of normal TV broadcasts and commercials may differ. This volume can be equalized.

1. Select the line "SPECIAL FUNCTIONS" from the "DIALOG CENTER" with the up/down button and confirm with OK.
2. Select the line "Volume limiter" and select "on" with the up/down button.

Setting the Sleep Timer

Users can input a switch-off time for the TV set with the "SLEEP TIMER" menu. The set switches to standby after the set time has elapsed.

1. Select the "SLEEP TIMER" line from the "DIALOG CENTER" with the up/down button and confirm by pressing the OK button.
2. The "SLEEP TIMER" menu appears.
3. Input the desired switch-off time (from 01 to 99 min) using the numeric keys.
4. The input switch-off time can be canceled with the AUX button.
5. Setting is ended with the TXT button.

Displaying the programme position number

It is possible to permanently display the number of the selected programme position.

1. Press the button until the "OK Dialog Center" on-screen display disappears. The programme position number is permanently displayed.
2. Press the button twice to cancel this function.

Parental lock

Using this function, users can enter a number code which blocks all functions.

Activating parental lock:

1. Call up the "DIALOG CENTER" using the button and OK.
2. Select and call up the line "Parental lock".
3. Enter a number code with the numeric buttons (always using four digits, e.g., 1111).
4. Save the number code with OK. The key appears in red, and the "PARENTAL LOCK" page is switched off with the TXT button. After switching off the set and switching on again, the "Parental lock" page appears, and all functions are locked.

Note: Please take good note of the number code!

Switching off parental lock:

1. Switch on the set.
2. Enter a number code with the numeric buttons (always using four digits, e.g., 1111). The set switches to the TV screen. After switching off again, the parental lock is activated again.

Note: To cancel the parental lock function, select and call up the line "Parental lock" from the "DIALOG CENTER". Enter the number code with four digits and press the AUX button. If the number code is forgotten, a number combination on the last page of this instruction manual will assist. If these buttons are pressed in sequence on the remote control, the "lock" will be canceled.

Service

1. Call up the "DIALOG CENTER" with the button and the OK button.
2. Select the "SERVICE" line with the up/down button and call it up using the OK button.
3. Select the desired functions with the up/down buttons.
4. Change with the up/down buttons.

Note: Each setting is ended with the TXT button.

Decoder selection

Refer to "Setting for operation with decoder" (refer to page 16).

Colour (manually adjust the colour norms)

The colour norms are automatically assigned when allocating the channel position with channel search. This setting is not necessary if the colour is already well adjusted on the different channels. Select the required colour norm (PAL or auto).

Select the blue screen

With this setting, a grainy image can be switched to a blue image.

Select the black screen

With this setting, it is possible to avoid distracting flickering of channels whilst switching channel position.

Station name on/off

Switch the station display on or off (see "Station name").

SAT

This setting is only necessary if an external SNR 105 MicroSAT receiver is connected. Three settings can be selected: "ON1", "ON2", and "off". Refer to the operating manual of the SNR 105 to determine which setting to make. If no SNR 105 is connected, this setting must be set to "off". Channel position selection is not possible if SAT "ON1" is selected without a connected SNR 105; the screen remains dark and "SAT" is displayed.

Switching formats

The automatic picture format switching function can be switched off in poor reception conditions. Select the desired setting.

Service Code

The functions of this line are reserved for authorized dealers.

Service and Special Functions

1. Switching-on Options

1.1 ATS Reset (Automatic Tuning System)

Press the power "ON" button while pressing the button on the Remote Control, then navigate to "LANGUAGE SELECTION" and press OK. The ATS system stops at every station of acceptable reception quality (AFC and coincidence) and stores the station data and the respective standard automatically (data is stored immediately in the NVM). The system then continues searching. Pressing the "TXT" button stops the ATS function.

1.2 Loading the Average Values/Emergency Data Set (ROM Data)

Press and hold the "P-" button on the Remote Control and switch on with the mains button. After replacement of IC82005 (NVM) for example, the TV set is started with the emergency data set. In doing so, the basic data is read out from the ROM of processor IC81050 and loaded into the NVM IC82005. IC82005 (data specific to the TV can be set via the Dialog Center) includes: chroma and audio standards, decoder settings, forced mono, reversing point, station ident on/off, OSD position, blue screen on/off, black screen on/off, ATS reset, Hotel Mode on/off, AGC and AFC, economy switch, type of picture tube, analog values (volume, brightness etc.), picture sharpness, overscan, security on/off, geometry adjustment, programme data (channel finetuning, station ident). Subsequently, enter personal values and picture geometry via the Dialog Center.

1.3 Cancelling the Parental Lock Continuously

To cancel the parental lock, enter the number 7038.

2. Special Functions in the Dialog Center

2.1 Switching on with Programme "1" or "AV"

Reach the "TV on with" menu with the button "i" via "DIALOGCENTER" > "SPECIAL FUNCTIONS". In "AV1" position, the TV starts showing the AV picture.

2.2 Picture/Sound Options On or Off for all Programmes

Reach the "Pict./sound opt." menu via "DIALOG CENTER" > "SPECIAL FUNCTIONS" by pressing the button "i". When selecting "off", the scales indicating the analog values do not appear.

2.3 Automatic Volume Control (option)

Reach the "Volume Limiter" dialog via "DIALOG CENTER" > "SPECIAL FUNCTIONS" by pressing the button "i". The volume of stations with large deviation is adjusted to normal deviation when selecting "on".

2.4 Decoder Settings for Individual Programme Positions

By pressing the button "i", call up the "Decoder Pxx" dialog via "DIALOG CENTER" > "SPECIAL FUNCTIONS". With the up/down buttons, it is possible to set an analog or digital decoder to be switched over internally or externally on a per-programme basis for scrambled stations (see 5.2).

2.5 Activating or Deactivating the Economy Mains Switch (option)

Reach the "Economy mains switch" menu with the button "i" via "DIALOG CENTER" > "SPECIAL FUNCTIONS". With the up/down buttons, select "1h-3h". The TV receiver switches off completely from Standby mode at the predetermined time or by pressing the mains button twice. This function is not used when "off" is selected.

3. Picture Settings

Basic Adjustment

Call up the picture settings menu with the red button (eye). Via the menu guide, it is possible to change the contrast, picture sharpness, and tint (only NTSC sources). The analog values for contrast, picture sharpness, and tint are stored automatically when leaving the menu.

4. Sound Settings

4.1 Sound Switching:

Call up the sound settings menu with the blue button (ear). Different types of sounds are available depending on the TV standard: "Mono" (pure mono transmissions), "Mono A / Mono B" (2-channel sound transmissions), "Stereo/Mono" (poor stereo sound quality, sound can be switched over to mono), "Nicam/FM", "Nicam A / Nicam B / FM", "Nicam Stereo / FM". The forced-mono, balance, bass, treble, and similar values are stored automatically when leaving the menu.

4.2 Headphone Sound Switching

Call up the sound settings menu with the blue button. Depending on the TV standard, different settings are possible for the headphones: "Mono A / B" (independent of the loudspeakers), "Nicam A / Nicam B / FM" (independent of the loudspeakers). With all other options, separate selection of the sound for the headphones and loudspeakers is not possible.

5. Open Service Settings

5.1 Maximum Programme Number (reversing point)

Call up the programme number which is to be the highest selectable programme position. With the button "i", select the dialog line "MANUAL TUNING" via the "DIALOG CENTER". Following the menu guide, enter "00" in the dialog line Band. Confirm with "OK" and terminate the menu. After this setting, only those programme positions can be selected with the "P+/P-" buttons in Programme Mode which are lower than the "00" position.

5.2 Decoder P1...79

By pressing the button "i", call up the dialog line "Decoder (P1-79)" via "DIALOG CENTER" > "SERVICE". With the up/down buttons, it is possible to set an analog or digital decoder to be switched over internally or externally on the programme positions 1...79 for scrambled stations. Possible decoder settings are: "Manual", "off", "ON1", "ON2", "ON3". With the "Manual" setting, it is possible to select the decoder switching function to be "off" or "ON" for the individual programme positions (see 2.4).

Meaning of the decoder settings:

The different possibilities of setting the decoder function ensure that the audio signal path is always switched correctly.

The three possible scrambling methods are:

Method 1 is for Canal+ operation. Methods 2 and 3 are used, for example, in Great Britain.

Video signal path

Due to the fact that the video signal is generally scrambled, it is only necessary to apply the decoder video signal switching voltage.

Audio signal path

Case 1: The decoder is not stereo capable. Therefore, the Nicam sound is not scrambled. The decoder changes the audio path depending on the Nicam decoder between internal and external.

Case 2: The decoder is stereo capable for scrambled analog and Nicam sound. Therefore, the decoder is switched over to external operation (usual case).

Case 3: The sound is generally connected only internally (no connection to the audio path of the Scart socket).

5.3 Forced Chroma Switching

Call up the dialog line "Color" via "DIALOG CENTER" > "SERVICE" with the button "i". With the up/down buttons, it is possible to force the automatic chroma standard switching function into "PAL", "SECAM", or "NTSC" on a per-programme basis under poor reception conditions.

5.4 Switching off the Blue Screen Background

Call up the dialog line "Blue Screen" via "DIALOG CENTER" > "SERVICE" with the button "i". When this function is set to "off", the blue background is switched off (e.g., when the aerial signal is missing).

5.5 Black Screen when Changing the Programme

Call up the dialog line "Black Screen" via "DIALOG CENTER" > "SERVICE" with the button "i". When this function is set to "on", the screen is blanked when changing the programme.

5.6 Display of the Station Name On or Off

The station ident is read out from VT (teletext) or the VPS signal. Call up the dialog line "Station name" via "DIALOG CENTER" > "SERVICE" with the button "i". With this function set to "off", it is possible to avoid the station name being displayed on the screen for a short time when changing the programme.

5.7 Group Delay Time / Setting the National Standards

Call up the dialog line "B/G FM 5.5 NIC" via "DIALOG CENTER" > "SERVICE" with the button "i". Select the standard corresponding to the country where the set is operated. S/SF/N = linear, B/DK/E = equalized. In countries with standards mix operation (e.g., Denmark), the standard is to be set via the dialog menu "Manual tuning" > "Standard".

6. Service Setting for the Dealer

6.1 Service Menu

Call up the Service Menu with the button "i" via "DIALOG CENTER" > "SERVICE" > Service Code. Having entered the code number "8500", the dealer can change the following settings under menu guide: Geometry, White balance, AGC, AFC, Tube, Cut-off align, Over-scan. Alignment: page 2-4.

6.2 OSD Position

Call up the dialog line "OSD" with the button "i" via "DIALOG CENTER" > "SERVICE" > Service Code "8500". With the up/down buttons, it is possible to shift the on-screen display in the horizontal or vertical direction and to store this position "with mem.".

6.3 Hotel Mode

6.3.1 Activating the Hotel Mode

Call up the dialog line "Hotel" with the button "i" via "DIALOG CENTER" > "SERVICE" > Service Code "8500". With activated "Hotel Mode": it is no longer possible to call up the "DIALOG CENTER" menu with the button "i"; the last volume setting is stored as the maximum level possible.

6.3.2 Deactivating the Hotel Mode

Depress and hold the button "i" on the remote control handset while switching the TV set on with the mains switch. Under the "SERVICE" menu, switch the Hotel Mode off.

6.4 Deactivating the Protection Circuit

Depress and hold the button "i" on the remote control handset while switching the TV set on with the mains switch. As long as the Service Menu is displayed, the protection circuit of the TV set is not evaluated on video processor IC34015-(50).

7. Setting the Analog Values

The analog values are stored automatically: after about 8 seconds, on switching to Standby mode, on switching over from TV to AV mode, on changing the individual AV settings. Having stored the minimum volume level, the volume indicator bar is displayed for about 10 seconds when switching the TV receiver on. With "AUX" > "OK", it is possible to reset the optimum values for picture and sound. The optimum values are read from EEPROM IC82005.

8. Audio / Video Connectors

Re-recording possibilities:

• AV 1 ↔ AV 2 (Scart2 ↔ Scart1 with 2 AV sockets)
• AV 1 ↔ AV 2 (Scart1 ↔ Scart2 with 2 AV sockets)
• AV 3 ↔ AV 1, AV2 (Camera ↔ Scart1,2 with 2 AV sockets)
• AV 2 ↔ AV 1 (Camera ↔ Scart with 1 AV socket)

Re-recording is activated automatically by selecting button "0/AV" of the source.

Securing a re-recording: A re-recording is secured by selecting the source with button "0/AV" > button "AUX" > button "0/AV", indication "copy on". The programme can be changed. The securing function can be canceled by repeating this sequence: "Copying off".

Notes: Should all video signal paths be in use on selection of AV because Copy is active for example, this situation is identified and the TV switches over to the next technically possible AV position. On selection of the country Italy in the menu, an AV-RGB signal with blanking signal (Pin 16) has priority. The blue screen background does not appear in all AV settings.

9. Changing the Picture Format

In AV mode, the picture format can be switched over with the remote control button "H" depending on the size of the picture tube. The picture format is changed between 4:3 and 16:9 in AV mode and on the programme position with Peribit. This status is indicated by the switching voltage applied to pin 8 of the AV 1 and AV 2 socket. 4:3 format 12V, 16:9 format 6V. Necessary for 16:9 camcorder playback to compensate for the vertical extension because supply of the 16:9 switching voltage is not provided.

Alignment

The CUC 20xx chassis are either fitted with TDA 8843/8375 or TDA 8843-N2/8844-N2. Type TDA 8843-N2/8844-N2 has a PLL demodulator integrated in it, so the AFC adjustment in the Service Menu is not necessary.

Attention!

1. After any repair or replacement of NVM (IC82005), check whether the NTSC 3.58MHz quartz is fitted. If it is not, the dialog line "NTSC 3,6" in the Service Menu must be set to "off". Press button "i" > "OK" > "SERVICE" > "OK" > Service Code "8500" > NTSC 3,6 "off" and in dialog line "End" store the setting "with mem.".
2. When no SAT Receiver (SNR 105 microSAT) is connected to the AV1 socket, SAT in the Service Menu is to be set to "off". Press button "i" > "OK" > "SERVICE" > "OK", select dialog line "SAT" and switch to "off".

All adjustment controls not mentioned in this description are pre-set at the factory and must not be re-adjusted in the case of repairs.

1. Chassis Board

Measuring instruments: Dual-channel oscilloscope, 10:1 test probe, digital voltmeter, colour video generator, spectrum analyser or RF millivoltmeter.

Service works after replacement or repair of the following modules: Power supply: alignment 1.1; Tuner: alignment 1.2, 1.3/1.4; NVM IC82005: alignment 1.2 to 1.8, 2.1, 2.2, 3.1, 3.3; Horizontal deflection: alignment 1.9.

2. Picture Geometry

Measuring instruments: Colour video generator, dual-channel oscilloscope with 10:1 test probe.

Service works after replacement or repair: Start with the vertical slope when adjusting the geometry! Horizontal and vertical deflection and replacement of the picture tube: alignment 2.1, 2.2. Bridge coil L53074: Only necessary after unskillful manipulation of the horizontal deflection: alignment 2.3. NVM IC82005: alignment 1.2 to 1.8, 2.1, 2.2, 3.1, 3.3.

3. CRT Panel

Measuring instruments: High-resistance voltmeter, dual-channel oscilloscope with 10:1 test probe.

Service works after replacement or repair: CRT, CRT panel: alignment 3.1 to 3.3. NVM IC82005: alignment 1.2 to 1.8, 2.1, 2.2, 3.1, 3.3.

PCB Layouts and Circuit Diagrams

This section provides coordinates for components on the solder side (bottom side) and component side (top side) of various PCBs, along with oscillograms and circuit diagrams. Due to the extensive nature of these diagrams and lists, only a summary of the types of information provided is included here. For detailed component locations and circuit specifics, refer to the original PDF document.

Chassis Board

Coordinates for components on both the solder and component sides are provided in extensive tables, detailing Pos. No., X, and Y coordinates for various components (e.g., CBR, CC, CR, CT, CD, D, F, IC, L, M, Q, R, SI, T, TR).

Oscillograms Chassis

A series of oscillograms illustrate various signal waveforms and parameters at different test points within the chassis. Each oscillogram is described by its voltage/division (V/cm or mV/cm) and time/division (s/cm, ms/cm, ns/cm), along with a brief description (e.g., "1V/cm, 5° s/cm", "2V/cm, 5ms/cm", "500mV/cm, 5° s/cm with/without OSD", "30% White raster").

Mains Chassis

Detailed circuit diagram of the Mains Chassis, including components like transformers, diodes, capacitors, and ICs, with voltage tables for various points (+2, +3, +4, +5, +E, +E/1, +E/2, +E/3, +E/4, +F, +F/2, +G, +H, +H/1, +M, +OEKO).

Signal-Chassis A / Signal-Chassis B

Detailed circuit diagrams for Signal Chassis A and B, showing signal paths, tuners, ICs (e.g., IC81050 processor, IC32420 STV8225, IC34015), and various connections for audio, video, and control signals.

Keyboard 29501 083 2500

Circuit diagram and component layout for the keyboard, including key matrix and connections to the main chassis.

Netzschalterplatte / Mains Switch Board 29305 165 7100

Circuit diagram and component layout for the mains switch board, detailing power input, standby logic, and connections to other modules.

Bedieneinheit / Control Unit 29501 082 7000

Circuit diagram and component layout for the control unit, showing IR receiver, key inputs, and connections to the chassis.

Cinch-Buchsenplatte / Phone Socket Board 29305 008 3700

Circuit diagram and component layout for the Cinch socket board, detailing audio and video input/output connections.

Panorama View 29305 129 0400

Circuit diagram and component layout for the Panorama View module, related to picture format adjustments.

Feature-Platte CTI/LTI / Feature Board CTI/LTI 29305 119 3500

Circuit diagram and component layout for the Feature Board, including ICs like TDA4566 and TDA9176, and connections for various features.

Bildrohrplatte / CRT Panel 29305 122 2300/2500

Circuit diagram and component layout for the CRT panel, including video output amplifiers (TDA6106Q), focus and UG2 control, and connections to the picture tube.

PIP-Baustein / Module PIP 29504 106 5100

Circuit diagram and component layout for the Picture-in-Picture module, including video matrix ICs (TEA6415) and related components.

Dolby-Surround-Platte / Dolby Surround Board

Circuit diagram and component layout for the Dolby Surround board, including audio processors (SDIP52 DPL3519A) and audio amplifier ICs (TDA7265).

SAT-Baustein / SAT Module

Circuit diagram and component layout for the SAT module, including tuner, control ICs (MC34063, PCF8591), and connections for satellite signals.

Spare Parts Lists

This section provides comprehensive spare parts lists for various Grundig TV models, including CUC 2030 N, CUC 2050 N, CUC 2058 N, CUC 2059 N, and CUC 2080 N series. Each entry typically includes a position number, figure reference, material number, quantity, and a detailed description of the part in both German and English. The parts cover a wide range of components, including:

• Chassis Components: Tuners, Euro-AV socket strips, feature boards, panorama view modules, PIP modules, fuse holders, appliance couplers, mounting clips, heat conducting foils.
• Picture Tube and Related Parts: Picture tubes (various models like A66EAK71X01, A66EHJ43X31, W76EGV023X015, W66EGV023X015, A80EJA33X104, A80EFF272X11), anode caps with high voltage cables, CRT sockets, focus and UG2 control units.
• Control and Interface Boards: Keyboards, mains switch boards, control units, Cinch socket boards, headphone sockets, remote controls (TP 715, TP 800, TP 810 C).
• Electronic Components: Diodes (e.g., TLHR 4601 TFK, 1N4148, 1N4004, BA157, BY228, BYW76, BYV16, BYV 28-200, BYT 54 M, BAV21, BYG22D), transistors (e.g., BC548B, BC558C, BC637, S2000N TOS, BUZ90, IRFPC50, BDX54A, BF299 G ITT, PBF259, 2SA1837, 2SC4793, BC328-40, BC338-40, SI9945), integrated circuits (e.g., TFMS5300, MC14094BD, MC14551BD, TDA4566, MSP3410D, TDA8843N2S1, TDA7297, TEA6425, TDA8350Q, TDA4605, LM317T, MC7805CT, LM358N, MC33164P-5RP, SDA5257-2, M24C08B1, TDA6106Q, DPL3519A-PP, PCF8591T-T3, NE555D, KF120BD-TR), capacitors (various types and values including electrolytic, ceramic, film, HV-Kerko, MP3, SI-Kerko B-SS, FOKO FKP1), resistors (various types and values), coils (e.g., ferrite beads, choke coils, linearity regulators, bridge coils, damping beads, interference suppressor coils), quartz crystals (e.g., 18.432MHz, 4.433619MHz, 3.579545 MHz, 6.0 MHz), optocouplers (CNY17F1).
• Mechanical Parts: Cabinet front parts, loudspeakers, tweeter loudspeakers, covers, emblems, degaussing coils, mounting accessories.
• Documentation: Operating instructions, service manuals, safety service manuals.

The lists also specify whether a part is optional or if an alternative part number is available. Some parts are noted as "NO SPARE PART" if they are not available separately.