Sony XR-C6100 Service Manual
Saudi Arabia Model
Product Overview and Specifications
This service manual provides detailed information for the Sony XR-C6100 car stereo system, specifically for the Saudi Arabia model.
Dolby noise reduction technology is manufactured under license from Dolby Laboratories Licensing Corporation. The terms "DOLBY" and the double-D symbol are trademarks of Dolby Laboratories Licensing Corporation.
Specifications
Cassette Player Section
| Feature | Details |
|---|---|
| Tape track | 4-track 2-channel stereo |
| Wow and flutter | 0.08% (WRMS) |
| Frequency response | 30-20,000 Hz |
| Signal-to-noise ratio (Dolby B NR) | 67 dB (TYPE II, IV), 64 dB (TYPE I) |
| Signal-to-noise ratio (Dolby NR off) | 61 dB (TYPE II, IV), 58 dB (TYPE I) |
Tuner Section
FM
| Feature | Details |
|---|---|
| Tuning range | 87.5-108.0 MHz (at 50 kHz step) / 87.5-107.9 MHz (at 200 kHz step) |
| FM tuning interval | 50 kHz/200 kHz switchable |
| Aerial terminal | External aerial connector |
| Intermediate frequency | 10.7 MHz |
| Usable sensitivity | 8 dBf |
| Selectivity | 75 dB at 400 kHz |
| Signal-to-noise ratio | 65 dB (stereo), 68 dB (mono) |
| Harmonic distortion at 1 kHz | 0.5% (stereo), 0.3% (mono) |
| Separation | 35 dB at 1 kHz |
| Frequency response | 30-15,000 Hz |
| Capture ratio | 2 dB |
MW
| Feature | Details |
|---|---|
| Tuning range | 531-1,602 kHz (at 9kHz step) / 530-1,710 kHz (at 10kHz step) |
| MW tuning interval | 9kHz/10kHz switchable |
| Aerial terminal | External aerial connector |
| Intermediate frequency | 10.71 MHz |
SW
| Feature | Details |
|---|---|
| Tuning range | SW1: 2,940-7,735 kHz; SW2: 9,500-18,135 kHz (except for 10,140 - 11,575 kHz) |
| Sensitivity | 40 μν |
Model Name Using Similar Mechanism: Tape Transport Mechanism Type: NEW MG-25F-136
IC Pin Function Description - Main Board IC501 (System Controller)
This section details the pin functions for the µPD78058GC-F58-3B9 System Controller IC (IC501) on the main board.
| Pin No. | Pin Name | I/O | Function |
|---|---|---|---|
| 1 | DSEL | I | Destination setting terminal. Frequency select switch (S502) input. "L": MW 9k step or FM 50k step, "H": MW 10k step or FM 200k step. |
| 2 | RC IN0 | I | Rotary remote commander shift key A/D input terminal. |
| 3 | SD IN | I | Station detector detect input from the FM/AM tuner unit (TU1). Stop level for SEEK, BTM, etc. is determined by SD presence ("H"). |
| 4 | AVSS | I | Ground terminal (for A/D converter). |
| 5 | ST | I/O | Input of FM stereo detection signal from FM/AM tuner unit (TU1), and output of forced monaural control signal to FM/AM tuner unit (TU1). Used for stereo display input and forced monaural output. ("L": FM stereo detection input, forced monaural output). |
| 6 | PLLCE | O | PLL serial chip enable output to the FM/AM PLL (IC1). |
| 7 | AVREF1 | I | Reference voltage (+5V) input terminal (for D/A converter). |
| 8 | PLLSI | I | PLL serial data input from the FM/AM PLL (IC1). |
| 9 | PLLSO | O | PLL serial data output to the FM/AM PLL (IC1). |
| 10 | PLLCKO | O | PLL serial data transfer clock signal output to the FM/AM PLL (IC1). |
| 11 | P-STIN | I | Polar stereo signal input terminal. Not used (fixed at "H"). |
| 12 | LCDSO | O | Serial data output to the liquid crystal display driver (IC901). |
| 13 | LCDCKO | O | Serial data transfer clock signal output to the liquid crystal display driver (IC901). |
| 14 | LCDCE | O | Chip enable output to the liquid crystal display driver (IC901). |
| 15 | LCDINH | O | Blank indicate control signal output to the liquid crystal display driver (IC901). "L": no display. |
| 16 | UNISI | I | Serial data input from the bus interface (IC701) (for SONY bus). |
| 17 | UNISO | O | Serial data output to the bus interface (IC701) (for SONY bus). |
| 18 | UNICKI | I | Serial data reading clock signal input terminal (for SONY bus). |
| 19 | UNICKO | O | Serial data transfer clock signal output to the bus interface (IC701) (for SONY bus). |
| 20 | BUSON | O | Bus on/off control signal output to the bus interface (IC701) (for SONY bus). "L": bus on. |
| 21 | SYSRST | O | Reset signal output to the bus interface (IC701) (for SONY bus). "L": reset. |
| 22 | AMPON | O | Standby control signal output to the power amplifier (IC611). "L": standby. |
| 23 | AMP MUT | O | Muting control signal output to the power amplifier (IC611). "L": muting on. |
| 24 | TUNON | O | Tuner system power supply on/off control signal output to the BA3918 (IC671). "H": tuner on. |
| 25 | FM ON | O | FM system power supply on/off control signal output to the BA3918 (IC671). "H": FM on. |
| 26 | PW ON | O | Main system power supply on/off control signal output to the BA3918 (IC671). "H": power on. |
| 27 | COLOR | I | Input terminal to set illumination color change function. "L": function present (fixed at "L" in this set). |
| 28 | AMSON | O | Tape auto music sensor control signal output to CXA2510AQ (IC301). "L" outputs to lower gain for audio level at FF/REW. |
| 29 | REL | I | Reel table rotation detect signal input from take-up and supply reel sensor. |
| 30 | MTLIN | I | Auto metal function presence input. "L": function present. Not used in this set (fixed at "H"). |
| 31 | POS3 | I | Tape position detect input from tape operation switch on mechanism block. |
| 32 | POS2 | I | (No specific function described for POS2 in this excerpt, likely related to tape position). |
| 33 | GND | -- | Ground terminal. |
| 34 | POS0 | I | Tape position detect input from tape operation switch on mechanism block. |
| 35 | POS1 | I | (No specific function described for POS1 in this excerpt, likely related to tape position). |
| 36 | LM LOD | O | Loading/tape operation motor control signal output to LB1638M (IC361) (for loading direction and forward side operation). |
| 37 | LM EJ | O | Loading/tape operation motor control signal output to LB1638M (IC361) (for eject direction and reverse side operation). |
| 38 | N/R OUT | O | Forward/reverse direction control signal output to CXA2510AQ (IC301). "L": forward direction, "H": reverse direction. |
| 39 | P.ON | O | Polar stereo detection signal output terminal. "H": polar stereo. Not used (open). |
| 40 | CM ON | O | Capstan/reel motor (M901) drive signal output terminal. "H": motor on. |
| 41 | TAPEON | O | Tape system power supply on/off control signal output terminal. "H": tape on. |
| 42 | COLSEL | I | Setting terminal for illumination color. "L": amber, "H": green (fixed at "H"). |
| 43 | RC IN1 | I | Rotary remote commander shift key A/D input terminal. |
| 44 | TEST | I | Setting terminal for test mode. "L": test mode (normally fixed at "H"). |
| 45 | ILL ON | O | Power supply on/off control signal output for illumination and LCD driver (IC901). "H": power on. (Also controls accessory power on/off based on S501 switch position). |
| 46 | BEEP | O | Beep sound signal output terminal. |
| 47 | MUT | O | Line muting control signal output terminal. "H": line muting on. |
| 48 | VOLCE | O | Chip enable signal output to electrical volume (IC161). |
| 49 | SUBCE | O | Chip enable signal output terminal. Not used in this set (open). |
| 50 | VOLCKO | O | Serial data transfer clock signal output to electrical volume (IC161). |
| 51 | SUBCKO | O | Serial data transfer clock signal output terminal. Not used in this set (open). |
| 52 | VOLSO | O | Serial data output to electrical volume (IC161). |
| 53 | TAPMUT | O | Tape muting on/off control signal output to CXA2510AQ (IC301). "H": tape muting on. |
| 54 | DOLON | I/O | Dolby control in/out terminal. Initial mode: valid/invalid selection input of Dolby function ("L" input: valid). Normal mode: Dolby on/off control signal output to CXA2510AQ (IC301). "H": Dolby on. |
| 55 | DOLBC | I/O | Dolby B/C selection control in/out terminal. Initial mode: Dolby B only/Dolby B and C type selection input ("L" input: Dolby B and C). Normal mode: Dolby type selection signal output. "L": Dolby B, "H": Dolby C. Not used (fixed at "H"). |
| 56 | AMSIN | I | Auto music sensor input. "L": music is present, "H": music is not present (detected by CXA2510AQ). |
| 57 | MTLSEL | I/O | METAL control in/out terminal. Initial mode: auto/manual mode selection input ("L": manual mode). Manual mode: METAL on/off control signal output to CXA2510AQ (IC301). "H": METAL on. Auto mode: input at MTLIN (pin 30). |
| 58 | AD ON | O | Power supply on/off control signal output for A/D converter. "L": power on. |
| 59 | RAMBU | I | Internal RAM reset detection signal input from RN5VD23AA (IC651). Input terminal to check RAM data integrity during low voltage. |
| 60 | RESET | I | System reset signal input from reset generator (IC652) and reset switch (S503). "L" input for 100 msec after power-on, then changes to "H". |
| 61 | SIRCS | I | Sircs signal input from remote control receiver (IC902). |
| 62 | BU IN | I | Battery detect signal input terminal. "H": battery on. |
| 63 | PW SEL | I | Power select switch (S501) input terminal. "L": off (halt mode), "H": on (operation mode). |
| 64 | ACCIN | I | Accessory detect signal input terminal. "L": accessory on. |
| 65 | NOSESW | I | Detects removal of front panel block. "L": attaching. |
| 66 | TELMUT | I | Telephone muting signal input terminal. At "L", signal is attenuated by -20 dB. |
| 67 | KEYACK | I | Acknowledge signal input for key entry. Accepts function and eject keys in power-off status. "On" at input of "H". |
| 68 | VDD | -- | Power supply terminal (+5V). |
| 69 | X OUT | O | Main system clock output terminal (5 MHz). |
| 70 | X IN | I | Main system clock input terminal (5 MHz). |
| 71 | GND | -- | Ground terminal. |
| 72 | XT OUT | O | Sub system clock output terminal (32.768 kHz). |
| 73 | XT IN | I | Sub system clock input terminal (32.768 kHz). |
| 74 | AVDD | -- | Power supply terminal (+5V) (for A/D converter). |
| 75 | AVREFO | I | Reference voltage input terminal (+5V) (for A/D converter). |
| 76 | KEYIN0 | I | Key input terminal (A/D input). Controls: OFF, SOURCE, MODE ◄►, SEEK AMS +/◄►, SEEK AMS -, VOLUME -, SEL, VOLUME +, DSPL, ATT keys (LSW901 to LSW910). |
| 77 | KEYIN1 | I | Key input terminal (A/D input). Controls: ▲, INTRO 1, REPEAT 2, SHUF/00 3, BL SKIP 6, ATA 5, BANK/MTL 4, BTM LCL, FILE, PRESET DISC +/- keys (LSW921 to LSW931). |
| 78 | D-BASS | I | D-BASS switch (SW951) input (A/D input). |
| 79 | VSM | I | FM and AM signal meter voltage detection input from FM/AM tuner unit (TU1). |
| 80 | KEYSEL | I | Setting terminal for the key (fixed at "L"). |
*1 Loading/tape operation motor control:
| Terminal | MODE STOP | LOADING/ FORWARD | EJECT/ REVERSE | BRAKE |
|---|---|---|---|---|
| LM LOD (pin 36) | "L" | "H" | "L" | "H" |
| LM EJ (pin 37) | "L" | "L" | "H" | "H" |
Schematic Diagrams
The following sections contain detailed schematic diagrams illustrating the internal circuitry of the Sony XR-C6100 car stereo. These diagrams are essential for understanding component interconnections and troubleshooting.
Main Section (1/2)
This diagram covers the main board circuitry, showing connections for various components and integrated circuits. It is a complex electrical schematic detailing signal paths and power distribution.
Main Section (2/2)
This diagram continues the main board schematics, illustrating further circuit details and interconnections. It includes waveform examples for key signals, such as the 7.2 MHz clock from IC1 and the 5 MHz clock from IC501 (XOUT).
Panel Section
This diagram focuses on the circuitry related to the front panel controls and display, showing connections to key components like the key board and display driver ICs.
IC Block Diagrams
These diagrams provide an overview of the internal functional blocks of key integrated circuits used in the XR-C6100.
Main Board ICs
- IC1 BU2624F-E2: System Controller, likely involved in clock generation and control, with blocks for reference, divider, phase detect, control logic, and shift registers.
- IC161 LC75373ED: Electrical Volume control IC, featuring blocks for volume control, input/output stages, and digital control interfaces.
- IC301 CXA2510AQ-T4: A complex audio processing IC, handling tape/AUX inputs, noise reduction (NR), equalization (EQ), mode selection, and output signals.
- IC361 LB1638M: Motor driver IC, used for controlling tape transport motors (loading, eject, forward/reverse).
- IC611 TDA7384: A power amplifier IC, designed to drive audio outputs.
- IC671 BA3918-V2: Regulator and power supply control IC, managing power distribution and voltage regulation.
- IC701 BA8270F-E2: Bus interface and control IC, handling communication via the SONY bus and managing system reset and battery status.
