Clarion Co., Ltd.
5-35-2, Hakusan, Bunkyouku, Tokyo, 112-8608 Japan
Service Dept.- 50 kamitoda,Toda-shi,Saitama,335-8511 Japan Tel: 048-443-1111 FAX:048-433-6996
Service Manual
NISSAN Automobile Genuine
6 Disc CD Changer
Published by Service Dept.
298-5977-00
Printed in Japan
May.2002 P
PN-2474B
PN-2475D/F
■SPECIFICATIONS
Frequency response: 17Hz to 20kHz(±2dB)
Channel separation: More than 70dB(1kHz,20kHz LPF)
Total harmonic distortion:
Less than 0.02
Output level: 3V
Power supply voltage: 13.2V DC
Ground: Negative
Current consumption: 1A
Dimensions(mm):
PN-2474 225(W)×67(H)×161(D)
PN-2475 225(W)×64(H)×172(D)
Weight: 1.85kg(PN-2474)
±2dB(1kHz,0dB)
(10.8 to 15.6V allowable)
1.65kg(PN-2475)
％(20kHz LPF)
■NOTES
※ Do not play heart-shaped, octagonal, or other specially
shaped CDs.
※ We cannot supply PWB with component parts in prin-
ciple. 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.
※ Specifications and design are subject to change without
notice for further improvement.
Model
PN-2474B-A
(Genuine No.28184 CR000)
Model
PN-2475D-A
(Genuine No.28184 6Y300)
Model
PN-2475F-A
(Genuine No.28184 AV700)
(Horizontal type)
Model
PN-2475F-B
(Genuine No.28184 AV710)
(Vertical type)
■COMPONENTS
PN-2474B-A/PN-2475D-A/F-A/F-B
Main unit −−−−− 1
Lock pin 335-0594-21 3
■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.
- 1 -
PN-2474B
PN-2475D/F
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
ploblems 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
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.
℃. Take care not to
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,adjustment or performance of procedures
other than those specified herein,may result in hazardous
radiation exposure.
The COMPACT DISC player and MINI DISC player should
not be adjusted or repaired by anyone except properly qualified service personnel.
This appliance contains a laser system and is classified as
a "CLASS 1 LASER PRODUCT".To use this model
properly,read this Owner's Manual carefully and keep this
manual for your future reference.In case of any trouble with
this player,please contact your nearest"AUTHORIZED service station".To prevent direct exposure to the laser beam,do
not to open the enclosure.
PN-2474B
PN-2475D/F
- 2 -
■BLOCK DIAGRAM
CONN FPC
CONNECTOR
L +/-
Q11,12
Q18,19
IC9
R +/-
MUTE
2SD1306
B.T.L.
NJM4556
16PIN
CONNECTOR
TXD
RXD
REQ
BUS BUFFER
ACC
IC8
ACC-DET
B/U 12V
RESET
S-80140AN
VDD 5V
VDD-REF
5V
IC7
CD 9V
BA09ST
IC3
DISC No. TR
GP1S94
S1
POSITION SW
MAIN PWB
IC6
IC4
DSP&DAC
IC1
RF AMP
LPF
NJM4556
TC94A14FA
TA2157F
IC2
SERVO DRIVER
BD7961FM
IC5
SYSTEM CONTROLLER
uPD780065
5V
REG
REG
MOTOR
DRIVER
3.3V
S2
MAGAZINE SW
S3
EJECT SW
LOADING UNIT
DRIVE UNIT
PICK-UP UNIT
DRIVE FPC
SPINDLE
MOTOR
LIMIT SW
SLED
MOTOR
- 3 -
LOADING FPC
LOADING MOTOR
LOAD-END SW
HOLDER-IN SW
12/8-DISC SENSOR
UP/DOWN MOTOR
PN-2474B
PN-2475D/F
■EXPLANATION OF IC
052-5050-01 uPD780065GC-710-8BT System controller
1.Terminal Description
pin 1: NU : - : Not in use.
pin 2: NU : - : Not in use.
pin 3: NU : - : Not in use.
pin 4: NU : - : Not in use.
pin 5: NU : - : Not in use.
pin 6: NU : - : Not in use.
pin 7: NU : - : Not in use.
pin 8: NU : - : Not in use.
pin 9: A Vref : IN : Reference voltage for ADC.
pin 10: RESET : IN : Reset signal input.
pin 11: NU : - : Not in use.
pin 12: NU : - : Not in use.
pin 13: CONN GND : - : Connect to the ground.
pin 14: X 1 : - : Crystal connection.
pin 15: X 2 : - : Crystal connection.
pin 16: VDD : - : Positive supply voltage.
pin 17: VSS : - : Negative supply voltage.
pin 18: NU : - : Not in use.
pin 19: NU : - : Not in use.
pin 20: NU : - : Not in use.
pin 21: SBSY : IN : Sub code block sync input.
pin 22: ACC CNT : IN : ACC ON signal input.
pin 23: MAG SW : IN: The inserted flag input for the magazine.
pin 24: MAG EJ : IN : The eject key input.
pin 25: NU : - : Not in use.
pin 26: NU : - : Not in use.
pin 27: NU : - : Not in use.
pin 28: NU : - : Not in use.
pin 29: NU : - : Not in use.
pin 30: NU : - : Not in use.
pin 31: NU : - : Not in use.
pin 32: NU : - : Not in use.
pin 33: NU : - : Not in use.
pin 34: NU : - : Not in use.
pin 35: NU : - : Not in use.
pin 36: NU : - : Not in use.
pin 37: NU : - : Not in use.
pin 38: TCLK : O : The test clock output.
pin 39: Disk No Tr : IN: The photo transistor signal input for the
disk number detection.
pin 40: 8cm DISC : IN: 8cm disk = "L", 12cm disk = "H".
pin 41: POS SW : IN: Datum point signal input to detect the disc
number.
pin 42: LIMIT : IN : Inside limit switch signal input for the disk.
pin 43: HOLDER IN : IN : "L" = Holder has been placed in the mag-
azine.
pin 44: LOAD END : IN : "L" = Holder has been removed from the
magazine.
pin 45: VSS : - : Negative supply voltage.
pin 46: VDD : - : Positive supply voltage.
pin 47: PON 2 : O : Power ON signal output.
pin 48: PON 1 INV : O : The inverted signal of PON 1(pin 73).
pin 49: UD CW : O : Up/down motor control signal output.
Refer Table 1.
pin 50: UD CCW : O : Up/down motor control signal output.
Refer Table 1.
pin 51: LD CW : O : Loading motor control signal output.
Refer Table 2.
pin 52: LD CCW : O : Loading motor control signal output.
Refer Table 2.
pin 53: DR MUTE : O : Drive mute signal output to the CD IC.
pin 54: GV SW :I/O: Gain select signal input/output.
pin 55: RESET : O : Reset signal output.
pin 56: CCE : O : The chip enable signal output.
pin 57: BUC CLOCK : O : CD IC clock pulse output.
pin 58: BUS 3 :I/O: CD IC Data input / output.
pin 59: BUS 2 :I/O: CD IC Data input / output.
pin 60: BUS 1 :I/O: CD IC Data input / output.
pin 61: BUS 0 :I/O: CD IC Data input / output.
pin 62: NU : - : Not in use.
pin 63: TEST 1 :IN : For the test.
pin 64: TEST 2 :IN : For the test.
pin 65: TEST 3 :IN : For the test.
pin 66: TEST 4 :IN : For the test.
pin 67: NU : - : Not in use.
pin 68: REQ O : O : Transmit request signal output.
pin 69: TXD : O : The serial data output.
pin 70: RXD :IN : The serial data input.
pin 71: NU : - : Not in use.
pin 72: A MUTE : O : The audio mute signal output.
pin 73: PON 1 : O : Power ON signal output.
pin 74: NU : - : Not in use.
pin 75: NU : - : Not in use.
pin 76: NU : - : Not in use.
pin 77: SCK :IN : The clock pulse input.
pin 78: SO : O : Serial data output.
pin 79: SI : IN : Serial data input.
pin 80: A VSS : - : Analog ground.
Table 1. Up/down motor control signal
Up Down Brake Stop
UD CCW (pin 50) L H H L
UD CW (pin 49) H L H L
Table 2. Loading motor control signal
Load Unload Brake Stop
LD CCW (pin 52) L H H L
LD CW (pin 51) H L H L
PN-2474B
PN-2475D/F
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