Clarion DB125 Service Manual
Clarion ( Malaysia) Sdn. Bhd.
Phase 3, Free Trade Zone One, 11900 Bayan Lepas, Penang, Malaysia
Tel: (60) 4-6439-106, Fax: (60) 4-6439-108
Clarion Co. Ltd.
Export Division : 5-35-2, Hakusan, Bunkyouku, Tokyo, 112-8608 Japan Tel: 03-3400-1121
Service Manual
SPECIFICATIONS
Radio section
Model: PE-2504B-A
Tuning system: PLL synthesizer tuner
Receiving frequencies:FM 87.9 to 107.9MHz
AM 530 to 1,710kHz (10 kHz steps)
Model: PE-2506K-A
Tuning system: PLL synthesizer tuner
Receiving frequencies:FM 87.5 to 108MHz (0.05 MHz steps)
AM 531 to 1,602kHz (9 kHz steps)
CD player section
System: Compact disc audio system
Usable disc: Compact disc
Frequency response: 10Hz to 20kHz (±1dB)
Signal to Noise ratio: 100dB (1kHz) IHF-A
Dynamic range: 95dB (1kHz)
Distortion: 0.01%
General
Max. Power Output: 50W x 4
Line Output: 1.7V (with CD 1kHz, 10kΩ)
Bass Control Action: ±13dB (30Hz)
Trible Control Action: ±12dB (10 kHz)
Power supply voltage: DC 14.4V (10.8 to 15.6V allowable
negative ground)
Current consumption: Less than 15A
Speaker impedance: 4Ω (4Ω to 8Ω allowable)
Dimensions (mm): 178 (W) x 50 (H) x 152 (D)mm
Weight: 1.0kg
Specification and design are subject to change without notice for
further improvement.
(0.20 MHz steps)
Published by Clarion (Malaysia)
298-5945-00 MAR. 2002P
Printed In Malaysia
AM/FM RADIO CD COMBINATION
Model
NOTE
1. We cannot supply PWB with component parts in
FEATURES
COMPONENTS
PE-2504B-A/PE-2506K-A
Main unit 1
Mounting bracket 300-7742-20 1
Escutcheon (Outer-Es) 370-9006-06 1
Extension Lead 854-6391-60 1
Part’s bag 1
Removal key 331-2497-20 2
DB125
(Model:PE-2504B-A) For U.S.A
(Model:PE-2506K-A) For Other Countries
principle. When a circuit on PWB has failure, please
repair it by component parts base. Parts which are
not mentioned in service manual are not
supplied.
1. Rotary Encoder Volume Control
2. Z-Enhancer with 3 Mode Sound Selector
3. MAGI-TUNE® FM Reception System
4. Seek/Manual Up/Down Tuning
5. 8-Times Oversampling Digital Filter and Dual 1-Bit
D/A Converters
6. Preset Station Scan (PS), Automatic Store (AS)
7. 2-Channel RCA Line Level Output
8. AM 1 band, FM 3 bands each 6 channels total 24
channels, Preset Memory Function
9. Repeat/Random Play/Intro Music Scan
10. 200W (50 W x 4) Maximum Power Output
To engineers in charge of repair or
inspection of our products.
Before repair or inspection,make sure to follow the
instructions so that customers and Engineers in charge of
repair or inspection can avoid suffering any risk or injury.
1. Use specified parts.
The system uses parts with special safety features
against fire and voltage. Use only parts with equivalent
characteristics when replacing them.
The use of unspecified parts shall be regarded as remodeling for which we shall not be liable.The onus of
product liability (PL) shall not be our responsibility in
cases where an accident or failure is as a result of
unspecified parts being used.
2. Place the parts and wiring back in their original
positions after replacement or re-wiring.
For proper circuit construction, use of insulation tubes,
bonding, gaps to PWB, etc, is involved. The wiring connection and routing to the PWB are specially planned
using clamps to keep away from heated and high voltage parts. Ensure that they are placed back in their
original positions after repair or inspection.
If extended damage is caused due to negligence during repair, the legal responsibility shall be with the repairing company.
3. Check for safety after repair.
Check that the screws, parts and wires are put back
securely in their original position after repair. Ensure
for safety reasons there is no possibility of secondary
problems around the repaired spots.
If extended damage is caused due to negligence of repair, the legal responsibility shall be with the repairing
company.
4. Caution in removal and making wiring connection to
the parts for the automobile.
Disconnect the battery terminal after turning the ignition key off. If wrong wiring connections are made with
the battery connected, a short circuit and/or fire may
occur. If extensive damage is caused due to negligence
of repair, the legal responsibility shall be with the repairing company.
5. Cautions regarding chips.
Do not reuse removed chips even when no abnormality is observed in their appearance. Always replace them
with new ones. (The chip parts include resistors, capacitors, diodes, transistors, etc). The negative pole of
tantalum capacitors is highly susceptible to heat, so
use special care when replacing them and check the
operation afterwards.
6. Cautions in handling flexible PWB.
Before working with a soldering iron, make sure that the
iron tip temperature is around 270°C. Take care not to
apply the iron tip repeatedly (more than three times) to the
same patterns. Also take care not to apply the tip with
force.
7. Turn the unit OFF during disassembly and parts replacement. Recheck all work before you apply power to the
unit.
8. Cautions in checking that the optical pickup lights up.
The laser is focused on the disc reflection surface
through the lens of the optical pickup. When checking
that the laser optical diode lights up, keep your eyes
more than 30cms away from the lens. Prolonged
viewing of the laser within 30cms may damage your
eyesight.
9. Cautions in handling the optical pickup
The laser diode of the optical pickup can be damaged
by electrostatic charge caused by your clothes and body.
Make sure to avoid electrostatic charges on your clothes
or body, or discharge static electricity before handling
the optical pickup.
9-1.Laser diode
The laser diode terminals are shorted for transportation
in order to prevent electrostatic damage. After
replacement, open the shorted circuit. When removing
the pickup from the mechanism, short the terminals by
soldering them to prevent this damage.
9-2.Actuator
The actuator has a powerful magnetic circuit. If a
magnetic material is put close to it. Its characteristics
will change. Ensure that no foreign substances enter
through the ventilation slots in the cover.
9-3.Cleaning the lens
Dust on the optical lens affects performance. To clean
the lens, apply a small amount of isopropyl alcohol to
lens paper and wipe the lens gently.
CAUTIONS
Use of controls, adjustments, or performance of
procedures other those specified herein, may resault in
hazardous radiation exposure.
The compact disc player should not be adjustment or
repaired by anyone expext properly qualified service
personnel.
(Model:PE-2504B-A)
Bottom View of
Main Unit
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DB125
DB125
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TROUBLESHOOTING
Power does not turn on (or no
sound is produced).
MAIN UNIT SECTION
CauseProblem Measure
Fuse is blown. Replace with a fuse of the same amperage as the
old fuse.
Compact disc cannot be
loaded.
Sound skips or is noisy.
Sound is bad directly after
power is turned on.
Another compact disc is already
loaded.
Compact disc is dirty.
Compact disc is heavily scratched
or warped.
Water droplets may form on the
internal lens when the car is
parked in a humid place.
Eject the compact disc before loading the new
one.
Clean the compact disc with a soft cloth.
Replace with a compact disc with no scratches.
Let dry for about 1 hour with the power on.
ERROR DISPLAYS
To protect the system, this unit has been equipped with self diagnostic functions. If a fault arises, a warning is
issued by various error displays. Follow the corrective measures and remove the fault.
Error Display
CD ER2
This error display indicates that a fault has arisen in the mechanism of the
source unit (for example, the disc cannot be ejected).
-Check the source unit
Corrective Measure
This error display indicates that the pickup focus is off because of a scratched
CD ER3
CD ER6
disc or some other factor during source unit play.
-Check the compact unit
This indicates that the CD’s TOC (table of contents) cannot be read, because
the selected disc is upside-down.
BLOCK DIAGRAM
CD MECHANISM SECTION 929-0220-80
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DB125
DB125
EXPLANATION OF IC
TC9324F-006 052-1932-00
Master Micro computer
Outward Form
100 pins, plastic QFP
Terminal Description
Pin No Symbol I/O Function
1 COM1 O COMMON signal 1 output for LCD
2 COM2 O COMMON signal 2 output for LCD
3 COM3 O COMMON signal 3 output for LCD
4 COM4 O COMMON signal 4 output for LCD
5 S1 O S1 output for LCD
6 S2 O S2 output for LCD
7 S3 O S3 output for LCD
8 S4 O S4 output for LCD
9 S5 O S5 output for LCD
10 S6 O S6 output for LCD
11 S7 O S7 output for LCD
12 S8 O S8 output for LCD
13 S9 O NC
14 S10 O S10 output for LCD
15 S11 O S11 output for LCD
16 S12 O NC
17 S13 O S13 output for LCD
18 S14 O S14 output for LCD
19 S15 O NC
20 S16 O S16 output for LCD
21 S17 O S17 output for LCD
22 S18 O S18 output for LCD
23 S19 O S19 output for LCD
24 S20 O S20 output for LCD
25 S21 O NC
26 S22 O S22 output for LCD
27 S23 O S23 output for LCD
28 S24 O NC
29 S25 O S25 output for LCD
30 S26 O S26 output for LCD
31 S27 O S27 output for LCD
32 S28 O S28 output for LCD
33 S29 O S29 output for LCD
34 S30 O S30 output for LCD
35 CD-RESET O C D MECH connect to RESET
36 CD5V ON O CD5V ON signal output pin (Active
High)
37 LD-CONT O Laser Diode Control pin
38 LD-MUTE O Mechanical photo sensor input terminal.
Terminal to detect the disc. Position in
loading status, chucking status and
other machine status. With disc, ‘H’ is
input, without disc ‘L’ is input.
39 VDD1 - VDD
40 RESET I Reset Port
41 GND1 - GND
42 AM-ON O While ‘HI’=AM and ‘LO’=FM
(Active High)
43 FM-ON O While ‘LO’=AM and ‘HI’=FM
(Active High)
44 ST/SD I While AM/FM SD in, SD is ‘LO’
(Active High)
45 STBY O Power Amplifier IC control terminal
46 VREF - VDD
47 ANT-CONT O Antenna Control output pin. ‘HI’ is
ON, ‘LO’ is OFF
48 CTRL1 O Power Supply IC control terminal
(Active High)
49 CRTL 2 O NC
Pin No Symbol I/O Function
50 RF-MUTE O RF Mute is signal output pin
(Active High)
51 A1 O Test mode for CD
52 A2 O Digital output pin for CD MECH
53 AD1 I Key switch detection terminal for
A/D converter
54 AD2 I Key switch detection terminal for
A/D converter
55 GND2 - GND
56 VDD2 - VDD
57 TR-A I Mechanical photo sensor input terminal.
Terminal to detect the disc. Position in
loading status, chucking status and
other machine status. With disc, ‘H’ is
input, without disc ‘L’ is input.
58 E-VOL CE O E-VOL use
59 E-VOL DO O E-VOL use
60 E-VOL CLK O E-VOL use
61 AREA A I Area setting input.Ref. Table 1
62 AREA B I Area setting input.Ref. Table 1
63 CW I Use for rotary volume
64 CCW I Use for rotary volume
6 5 MUTE O Output mute.While it is ‘LO’,mute i
s ‘ON’
66 TEST I NC
67 HOLD I HOLD=ACC detect terminal
68 SBSY I Connected to CD MECH
69 B/U DET I B/U detecting terminal
70 AM-IF IN I AM IF INPUT
71 FM-IF IN I FM IF INPUT
72 GND3 - GND
73 FM-OSC I FM VCO input terminal
74 AM-OSC I AM VCO input terminal
75 VPLL O NC
76 VDD3 - VDD
77 DO1 O PLL detector output 1
78 DO2 O PLL detector output 2
79 TEST2 I NC
80 TR-B I Mechanical photo sensor input terminal.
Terminal to detect the disc. Position in
loading status, chucking status and
other machine status. With disc, ‘H’ is
input, without disc ‘L’ is input.
81 CHU SW I Mechanical photo sensor input terminal.
Terminal to detect the disc. Position in
loading status, chucking status and
other machine status. With disc, ‘L’ is
input, without disc ‘H’ is input.
82 S-STOP I Mechanical photo sensor input terminal.
Terminal to detect the disc. Position in
loading status, chucking status and
other machine status. With disc, ‘H’ is
input, without disc ‘L’ is input.
83 Z-MUTE O Zero Mute for CD MECH
(Active High)
84 BUCK O C D MECH data bus clock
85 CCE O CD MECH chip enable
Pin No Symbol I/O Function
86 BUS0 I/O CD MECH data bus
87 BUS1 I/O CD MECH data bus
88 BUS2 I/O CD MECH data bus
89 BUS3 I/O CD MECH data bus
90 B/U DET I B/U detecting terminal
91 CD-EJ I C D EJECT (Active Low)
92 VCPU - 10uF to GND
93 GND4 - GND
Table 1. Area Setting Table
AREA AREA A (Pin 61) AREA B (Pin 62)
US L L
K H L
J L H
Pin No Symbol I/O Function
94 X-OUT2 - NC
95 X-IN2 - GND
96 VDD4 - VDD
97 X-OUT1 - X-TAL 4.5MHz
98 X-IN1 - X-TAL 4.5MHz
99 GND5 - GND
100 VEE - NC
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DB125 DB125
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EXPLODED VIEW • PART LIST
Main Section
NO. PART NO. DESCRIPTION Q'TY NO. PART NO. DESCRIPTION Q'TY
01 331-1861-00 EARTH PLATE 1
02 286-9910-00 SET PLATE (PE-2504B) 1
02 286-9912-00 SET PLATE (PE-2506K) 1
03 311-1848-00 LOWER CASE 1
04 310-1751-00 UPPER CASE 1
05 731-3004-80 TAPTIGHT (M3 x 4) 3
06 331-3366-00 MECHA BRACKET 3
07 714-2604-81 MACHINE SCREW (M2.6 x 4) 4
08 929-0220-80 CD MECHANISM 1
09 714-3006-81 MACHINE SCREW (M3 x 4) 1
10 731-3008-80 TAPTIGHT (M3 x 8) 5
11 731-3012-80 TAPTIGHT (M3 x 12) 3
12 816-2573-60 FLAT WIRE 1
13 778-2004-00 SCREW (2 x 4) 2
14 371-5717-00 FACE PLATE 1
15 373-0990-00 DIAL-CVR 1
16 335-0833-01 CABLE TIE 1
17 370-9612-00 ESCUTCHEON 1
18 382-6456-00 BUTTON ASSY 1
19 335-6719-00 ILLUMI PLATE 1
20 380-5539-00 KNOB 1
21 346-0072-02 LEATHER SHEET 1
22 335-4759-20 DISC GUIDE 1
23 382-6457-00 BUTTON ASSY 1
24 335-6720-00 ILLUMI PLATE 1
25 716-0778-00 WAVE SCREW (2 x 6) 6
26 347-6750-00 COPPER TAPE 2
27 016-9900-84 VR W / SHAFT 1
28 345-7148-13 RUBBER PART 2
29 017-0414--00 PILOT LAMP (8V 70mA) 2
30 001-7030-02 DIODE 1
31 335-6723-00 LED HOLDER 1
32 379-1226-40 INDICATOR 1
33 347-6634-00 FILM 1
34 347-6633-00 SHADE 1
35 335-6722-00 LCD ILLUMI 1
36 335-6721-00 LCD HOLDER 1
37 039-2067-01 MAIN PWB 1
(WITHOUT COMPONENT)
38 816-2571-60 EXTENSION LEAD 1
39 816-2572-60 EXTENSION LEAD 1
40 074-1191-26 OUTLET SOCKET 1
41 880-2089R TUNER 1
42 009-9006-60 CHOKE 1
43 074-1214-00 OUTLET SOCKET 1
44 313-1838-00 HEAT SINK 1
45 092-4000-51 ANT-RECEPT 1
46 051-3295-00 IC 1
47 051-2031-31 POWER IC 1
48 331-3367-00 IC HOLDER 1
49 013-6005-51 TACT SWITCH 12
50 331-3368-00 PWB HOLDER 1
51 855-8000-08 RCA PIN CORD 1
52 345-3799-0L RUBBER PART 1
53 345-5164-00 RUBBER PART 1
54 347-6679-00 SHADE 1
55 013-6001-50 TACT SWITCH 2
56 345-8339-00 SPONGE 1
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DB125 DB125
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