ℹ️ Document Conversion Notice:
This document has been converted from PDF and formatted to fit this screen. Diagrams and images may be available only in the original here.
This manual is available for repairing units with serial numbers from 80900001 onwards. For units with serial numbers before 80900000, please use the original service manual (B51-5428-00).
In compliance with Federal Regulations, the following are reproductions of labels on, or inside the product relating to laser product safety.
KENWOOD-Corp. certifies this equipment conforms to DHHS Regulations No. 21 CFR 1040.10, Chapter 1, Subchapter J.
DANGER: Laser radiation when open and interlock defeated. AVOID DIRECT EXPOSURE TO BEAM.
Refer to DP-3080MKII/3090 Service manual (B51-5349-00), if disassembly for repair is required.
ACCESSORIES / CAUTIONS
Accessories
Audio cord (E30-2913-08) (1)
Batteries (R6/AA) (2)
Remote control unit (A70-1181-08): RC-P0305 (1)
System control cord (E30-2912-08) (1)
AC plug adaptor (E03-0115-05) (1) - Use to adapt the power cord plug to the wall outlet. (Accessory only for regions where use is necessary.)
Battery cover (A09-0356-08)
The remote control unit features various buttons for playback control, including numerical keys (0-9, +10), RANDOM, REPEAT, P.MODE, EDIT, CHECK, CLEAR, TIME DISPLAY, STOP, PLAY/PAUSE, and track navigation buttons.
Cautions
Note related to transportation and movement
Before transporting or moving this unit, carry out the following operations:
Turn the power ON but do not load a disc.
Verify that the display shows "no dISC" and the track numbers (1-20).
Wait a few seconds and set the unit to STANDBY mode.
Operation to reset
The microcomputer may malfunction (e.g., inability to operate, erroneous display) if connection cords are unplugged while the unit is ON or due to an external factor. To reset the microcomputer and restore normal condition, follow these steps:
Set the unit to STANDBY mode by pressing the ON/STANDBY (①/⑥) key. After a few seconds, turn the unit ON by pressing the ON/STANDBY (①) key again.
Please be aware that resetting the CD player will erase all stored information and return it to the factory settings.
DISASSEMBLY FOR REPAIR
How to open tray when tray not come out.
To open the tray if it does not come out:
Insert a screwdriver into the left side hole of the mechanism assembly.
While pushing the rack gear fully rightwards, pull the tray out.
A diagram illustrates this process, showing a screwdriver inserted into a hole on the mechanism assembly, pushing a gear, and an arrow indicating the tray being pulled out.
BLOCK DIAGRAM
The block diagram illustrates the internal electronic connections of the DPF-1010/1010E/2010/2010E Compact Disc Player. Key components and their interconnections are as follows:
IC1 (LA9241M) Servo Amp: Receives signals from the pickup unit (Focus Coil, Tracking Coil) and outputs to the CD Control Microcomputer (IC301).
IC2 (LC78620E) Servo/Signal Control: Connected to IC1 and IC301, handling servo and signal processing.
IC3 (M56748) Driver IC: Controls the SLED and LOADING motors, receiving input from the CD Control Microcomputer.
IC4 (TA7291S): Connected to the SLED and LOADING motors.
IC301 (IX0259AW) CD Control Microcomputer: The central control unit, connected to IC1, IC2, IC3, and the FL Display (FL401). It manages CD operations, display, and system control.
FL401 Display: Shows operational status and track information.
IC101 (NJM4565D) Op Amp: Processes audio signals, outputting to the RCA Jack (JK1) and Digital Output Jack (JK3, DPF-2010 only).
Power Transformer (PT501): Provides power to various ICs and components, including IC201, IC202, IC203, Q201, Q202, and D213-D217.
System Control Jack (E11-0188-05): For external system control.
Digital Output Jack (W02-2620-08): For digital audio output (DPF-2010 only).
RCA Jack (E63-1081-08): For analog audio output.
The diagram shows the flow of signals from the pickup unit through servo and signal processing, controlled by the microcomputer, to the display and audio output sections, all powered by the transformer.
CIRCUIT DESCRIPTION
1. Pin description
This table details the function of each pin on the main integrated circuits:
Pin No.
Name
I/O
Description
1-6
6G-1G
O
Display grid driver (6G-1G)
7
NC
O
Open
8
VDD
VDD +5V
9
S GATE
Open
10
SCK
Open
11
S DATA
Open
12
C-RESET
O
DSP Reset L: Reset
13
S-MUTE
O
System mute L: ON
14
NC
Open
15
TEXT
Text copy detection
16
NC
Open
17
RESET
I
Hardware reset L: Reset
18
LD CLOSE
O
Tray motor control H: close
19
LD OPEN
O
Tray motor control H: open
20
AVSS
GND
21
NC
Open
22
PU IN
I
Pickup location L: inside
23
OPEN
I
Tray open L: open
24
CLOSE
I
Tray close L: close
25-28
KEY0-3
Key input
29
AVDD
AVDD +5V
30
AVREF
AVREF +5V
31,32
XT1,2
Open or GND
33
VSS
GND
34,35
X0,1
X'tal 4.19MHz
36
WRQ
Write request
37
COIN
O
Command data to CD DSP
38
16/8BIT
16/8 bit switch H:16
39
HF
Open
40
NC
O
Open
41
CQCK
O
Clock to CD DSP
42
SQOUT
SQ data from CD DSP
43
RWC
O
Read/write control
44
NC
Open
45
SBUSY
I/O
System control data
46
SDATA
I/O
System control status
47
REMOCON
Remote control signal input L: input
48
GND
GND
49
TRY L/H
O
Tray motor speed control L: high
50
SL-
O
Sled motor reverse
51
SL+
O
Sled motor forward
52
VDD
VDD +5V
53-58
NC
O
Open
59
EMPH
O
De-emphasis monitor output
60
DRF
O
CD focus OK signal H: OK
61
NC
Open
62-70
a-j
O
Display segments driver (a-j)
71
VLOAD
Vload 32V
72,73
k,l
O
Display segments driver (k,l)
74-77
NC
O
Open
78-80
9G-7G
O
Display grids driver (9G-7G)
2. Test mode
To set the test mode, press the STOP key while pressing the POWER switch.
Test Mode Flow:
START: Press STOP + POWER.
FL LIGHT UP ALL: All fluorescent display segments light up.
Tray open/close enable: The tray can be opened/closed (display does not change).
For move Pick-up, FWD and REV key enable only stop mode:
Key in PLAY: Press PLAY.
Laser ON, Display [LD ON]: Laser turns on, display shows "LD ON".
Key in Play: Press PLAY.
Focus ON, Display [FS ON]: Focus turns on, display shows "FS ON".
This CD system incorporates automatic adjustment functions. Therefore, when the pickup is replaced, readjustment is not necessary. Since this CD unit does not require adjustment, the combination of FPWB and laser pickup unit is not restricted.
Automatic adjustment item
The following items are automatically adjusted:
Focus offset: This adjustment ensures the laser beam is correctly focused on the disc surface. Figure 1 illustrates Focus offset adjustment, showing waveforms related to IC1 FD and TE pins over time.
Tracking offset: This adjustment ensures the laser beam accurately tracks the disc's grooves. Figure 2 illustrates Tracking offset adjustment, showing waveforms related to IC1 FD and TE pins over time, with an enlarged view for detail.
E/F balance (Tracking error balance): This balances the tracking error signal. Figure 3 illustrates Tracking error balance adjustment, showing waveforms related to IC1 TO and TE pins over time.
RF level AGC function (HF level: constant): Automatic Gain Control for the RF signal level, maintaining a constant high-frequency level.
RF level automatic follow-up of the tracking gain: Automatic adjustment of tracking gain based on the RF level.
These automatic adjustments are performed each time a disc is changed, ensuring optimal playback settings for each disc.
Figure 4 shows checking points for T/E BALANCE (Pin 7 of IC-1), T/O (Pin 15 of IC-1), and F/O (Pin 16 of IC-1) with associated resistors (R5, R13, R14) and Q201.
EXPLODED VIEW (MECHANISM)
This section provides an exploded view of the CD player's mechanism, detailing its components and their assembly. Parts with exploded numbers larger than 700 are not supplied.
The diagram shows the main mechanical components, including:
Loading Mechanism: Comprising the CD tray (20), various gears (e.g., 17, 30), and the LM (Loading Motor) (25).
Pickup Unit (PU): The laser pickup assembly, connected to the mechanism.
Disc Motor (DM): (15) responsible for spinning the disc.
Feed Motor (FM): (26) responsible for moving the pickup unit.
Chassis Components: Various plates, brackets, and screws that form the structural frame of the mechanism.
Screw Specifications:
A ①2.6x10: N09-2950-08
B M2.6x5: N09-2928-08
C M2.6x6: SH1109700937
E M2x3: SH1309701564
G M2x5 (BLK): SH1109700938
The diagram illustrates how these components fit together, with numbered parts indicating specific items and letters indicating screw types and locations (e.g., Bx2, Gx2, Ax2, Ex2, Cx4).
PC BOARD (Component side view)
This section provides a component side view of the main PC board, illustrating the layout of various electronic components. The board includes sections for SYSTEM CONTROL, DIGITAL OUT, and OUTPUT.
Key areas and components visible on the board include:
Integrated Circuits (ICs): Such as IC202, IC101, and various other ICs.
Refer to the schematic diagram for the specific values of resistors and capacitors.
SCHEMATIC DIAGRAMS
The service manual includes detailed schematic diagrams for various sections of the CD player, illustrating the electrical connections and components.
Pickup Unit and Main PWB
This diagram shows the connections from the pickup unit to the main printed wiring board (PWB). It includes the signal lines, servo control, and driver circuits. Key components like IC2 (DSP), IC3 (STL DRIVER), and the loading drive are depicted, along with various test points and voltage references.
DPL-1 PWB, DPL-2 PWB, and Power PWB
These diagrams detail the display, control, and power supply sections. The DPL-1 PWB includes the FL401 display and associated control lines. The DPL-2 PWB shows the system control interface and remote sensor. The Power PWB illustrates the power transformer (PT501), rectifiers, voltage regulators (IC201, IC202, IC203), and power switches (SW501, SW502), providing various voltage rails (+7.2V, +5V, -7.9V, +8V, -8V, +29.5V, -29.0V) to the system. The audio output section with IC101 (Op Amp) and associated components is also shown, leading to the RCA and digital output jacks.
CAUTION: For continued safety, replace safety critical components only with manufacturer's recommended parts (refer to parts list). ▲ indicates safety critical components. For continued protection against risk of fire, replace only with same type and rating fuse(s). To reduce the risk of electric shock, leakage-current or resistance measurements shall be carried out (exposed parts are acceptably insulated from the supply circuit) before the appliance is returned to the customer.
The DC voltage is an actual reading measured with a high impedance type voltmeter. The measurement value may vary depending on the measuring instruments used or on the product. Refer to the voltage during PLAY unless otherwise specified; The value shown in () is the voltage measured at the moment of STOP.
EXPLODED VIEW (UNIT)
This section provides an exploded view of the entire CD player unit, illustrating how the various assemblies and components fit together. Parts with exploded numbers larger than 700 are not supplied.
The diagram shows the main structural and external components:
Top Cabinet (604)
Front Cab Assembly (600) with Panel (601) and FL Window (610)
PC Boards: Main PWB (615) and other smaller boards.
Mechanism Assembly: The internal CD mechanism (640) is shown as a sub-assembly.
Switches and Knobs: Various control switches (e.g., SW401-SW426) and the Power Knob (621).
Connectors: RCA Jack (JK1), System Control Jack (JK2), Digital Output Jack (JK3), and various internal connectors (CNP401, CNP402).
Power Supply Components: Including the Power Transformer (PT501, not explicitly numbered in this view but implied by connections).
Cords and Cables: AC power cord, audio cords, system control cord.
Screw Specifications:
A ①4x8: N89-4008-46
B ①3x8: N89-3008-46
C ①2.6x10: N89-2610-46
D ①3x6(BLK): N89-3006-46
E ①3x8(BLK): N89-3008-45
F ①3x10: N89-3010-46
G ①3x20(BLK): N89-3020-45
The diagram uses lines and numbers to indicate the assembly sequence and relationships between parts.
PARTS LIST
This section provides a comprehensive list of parts required for the DPF-1010, DPF-1010E, DPF-2010, and DPF-2010E models. Parts without specific part numbers are not supplied. ▲ indicates safety critical components.
DPF-1010/2010 Parts
This list includes mechanical and external components such as:
Cabinets and Covers: Top cabinet, battery cover, CD tray cover, front cab assembly.
Knobs and Badges: Power knob, KENWOOD badge.
Cords and Cables: AC cords (various types), system control cord, RCA cord, FFC cable.
Accessories: AC plug adapter, instruction books (available in English, Spanish, Taiwanese, Italian/French, German/Dutch, Russian, Hungarian, Czech, Polish), set poly bag, P-cases.
Destinations are indicated by codes: L (Scandinavia), K (USA), P (Canada), R (Mexico), C (China), Y (PX/Far East, Hawaii), T (Europe), E (Europe), G (Germany), V (China/Shanghai), X (Australia), Q (Russia), H (Korea), M (Other Areas).
Electronics Parts
This list details electronic components, including:
FL Display: CM1703C.
Capacitors: Various types including Ceramic (e.g., CC45FSL, CK45FB), Mylar (e.g., CQ92FM, CQ93FM), and Electrolytic (e.g., CE04KW). Values range from 10PF to 4700UF.
Total harmonic distortion + noise: Less than 0.007% (at 1 kHz)
Channel separation: More than 90 dB (at 1 kHz)
Wow & flutter: Unmeasurable Limit
Output level/impedance:
Variable (only DPF-2010): (Max.) 2.0 V/0.8 Ω
Fixed (only DPF-1010): 2.0 V/0.8 Ω
Digital output (only DPF-2010):
Optical (Wave length 660 nm): -15 dBm ~ -21 dBm
General
Power consumption:
Australia, Europe and U.K.: 12 W
Other countries: 14 W
Dimensions:
W: 440 mm (17-5/16")
H: 95 mm (3-3/4")
D: 370 mm (14-9/16")
Weight (Net): 4.3 kg (9.5 lb)
Notes:
KENWOOD follows a policy of continuous advancements in development. For this reason, specifications may be changed without notice.
The full performance may not be exhibited in an extremely cold location (under a water-freezing temperature).
Component and circuit are subject to modification to insure best operation under differing local conditions. This manual is based on Europe (E) standard, and provides information on regional circuit modification through use of alternate schematic diagrams, and information on regional component variations through use of parts list.
KENWOOD CORPORATION
14-6, Dogenzaka 1-chome, Shibuya-ku, Tokyo, 150-8501 Japan
KENWOOD SERVICE CORPORATION
P.O BOX 22745, 2201 East Dominguez St., Long Beach, CA 90801-5745, U.S.A.
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