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– 9 –

Terminal PWB

Rear Panel

Main PWB

Tuner PWB

(G1) x5
ø3 x8mm

(E1) x2
ø3 x10mm

(G2) x2
ø3 x10mm

(G3) x2

(E2) x1

(F2) x1

(D1) x1
ø3 x10mm

(D2) x1

(F1) x1
ø3 x6mm

Chassis

Display PWB

CD 
Mechanism

Top Cabinet

Holder PWB

CD PWB

LED PWB

Holder,
Indicator Panel,CD

(J1) x4
ø2.5 x10mm

(H1) x1

(H2) x1

(H2) x1

(H3) x4
ø2.5 x10mm

(K1) x2
ø2.5 x10mm

Display PWB

Gear Box

Switch
PWB

Top Cabinet

(L2) x1

Hook
(L1) x2

Hook
(N1) x3

(M2) x1

(M1) x6
ø2.5 x10mm

Switch
PWB

Switch

Hook
(L1) x2

Pull

Pull

Pull

Pull

,

,

,

Gear Box

Hook
(N1) x3

( A3 ) x2
ø3 x12mm

( A4 ) x4
ø4 x12mm

( A2 ) x2
Special Screw

 Net Frame
( A1 ) x1

( A2 ) x2
Special Screw

Woofer

Tweeter

1

Speaker

1. Net Frame ........... (A1) x1

9-4

2. Special Screw ..... (A2) x4
3. Screw .................. (A3) x2
4. Screw .................. (A4) x4

– 10 –

Perform steps 1 to 13 of the disassembly method to remove

the gear box.(See page 8,9)

1. Remove the screws (A1) x 2 pcs., to remove the CD lid
    motor.
2. Remove the hooks (A2) x 3 pcs., to remove the worm wheel.
Caution:
Be careful so that the gear is not damaged.
(The damage gear emits noise during searching.)

(A1) x2
ø2 x3mm

Hook
(A2) x3

CD Lid Motor

Worm Wheel

Perform steps 1 to  9 of the disassembly method to remove the
CD mechanism.(See page 8,9)
1. Remove the mechanism cover, paying attention to the

pawls (A1)x 4 pcs.

2. Remove the screws (A2) x 2 pcs., to remove the shaft (A3)

x 1 pc.

3. Remove the stop washer (A4) x 1 pc., to remove the gear
    (A5) x 1 pc.
4. Remove the pickup unit.
Note:
After removing the connector for the optical pickup from the
connector, wrap the conductive aluminium foil around the
front end of connector remove to pretect the optical pickup
from electrostatic damage.

Pickup unit

(A2) x2
ø2.6 x6mm

(A1) x4

CD Mechanism

Shaft
(A3) x1

Gear
(A5) x1

Stop Washer
(A4) x1

Mechanism Cover

– 11 –

AM

GND

FM

75

OHMS

ANTENNA
TERMINAL

SO301

T302

FE301

T306

IC303

T351

VR351

TP301

FM Mute
Level

AM Band
Coverage fL

AM
Tracking fL

AM IF

IC302

20

TUNER PWB-B1

• Setting the Test Mode
Keeping the FF/FWD button and MEMORY/SET button
pressed, turn on ON/STAND-BY. Then, the frequency is
initially set in the memory as shown in Table. Call it with the
VOLUME UP/DOWN button to use it for adjustment and check
of tuner circuit.

1

87.50 MHz

6

522 kHz

2

108.00 MHz

7

1,620 kHz

3

98.00 MHz

8

990 kHz

4

90.00 MHz

9

603 kHz

5

106.00 MHz

10

1,404 kHz

• FM Mute Level
Signal generator: 1 kHz, 40 kHz dev., FM modulated

*1. Adjust so that an output signal appears.

87.5 MHz

87.5 MHz

2.2 V 

±

 0.7 V

TP301

108 MHz

108 MHz

7.3 V 

±

 1.0 V

TP301

• Check FM VT
Signal generator: 1 kHz, 40 kHz dev., FM modulated

98.00 MHz

98.00 MHz

VR351*1

Input: SO301

(30 dB

µ

V)

Output: Speaker
Terminal

*1. Input: Antenna,

Output: Speaker Terminal

*2. Input: Input is not connected,

Output: TP301

AM IF

450 kHz

1,620 kHz

T351

*1

 AM Band

—

522 kHz

(fL): T306

*2

Coverage

1.1 

±

 0.1 V

AM

990 kHz

990 kHz

(fL): T302

*1

Tracking

fL: Low-range frequency
fH: High-range frequency

Signal generator: 400 Hz, 30%, AM modulated

– 12 –

2. CD Test Mode (TEST 1)
In the CD test mode the operation of each step is possible even if the LID-SW is off.  If focus cannot be taken in step 3 or any error
is processed, it is impossible to proceed to the next step.  During error processing, end the test mode by pressing the ON/STAND-
BY button or return to the step 1 by pressing the CD STOP button.  Any other operations are inhibited.

1. Step 1 Mode
When the CD test mode is obtained, the following display lights up.  Then CD initialization operation flow proceeds up to CD
STB off to wait for the following buttons to be pressed.

One second after display lights up

Press the following buttons in this state to obtain the operations specified below.

"ON/STAND-BY" ...... Test mode and power turned off to shift to the ordinary standby mode.
"FF/FWD" ................. After the pickup returns to the innermost periphery, it slides toward the outer periphery while this button

is pressed.

"REW/REV" .............. After the pickup returns to the innermost periphery, it slides toward the inner periphery while this button

is pressed.  If PICKUP IN is on, input is invalid.

"PLAY" ..................... Shift to step 2
"STOP" ..................... Invalid
"FUNCTION" ............ Shift to step 5

*  In case of initialization, the pickup is moved toward the inner periphery. Any buttons other than "ON/STAND-BY" button are

not accepted until the shift of pickup to the inner periphery is completed at this time. If PICKUP IN SW ON cannot be detected
within 10 seconds, the slide motor stops, and the following error display appears.  Press the ON/STAND-BY button to end
the test mode, or press the CD STOP button to return to step 1.  Any other operations are inhibited.

The test mode applied to this microcomputer has three modes, namely the ordinary test mode for adjustment or measurement,
the aging test mode, and the self-diagnosis test mode for self-judgment in case of final product inspection.

For obtaining each test mode, press the ON/STAND-BY button, while keeping pressing the following two buttons in the ordinary
stand-by mode (power off ).  In this case, the main unit buttons are valid.  When turning the ON/STAND-BY on with remote control
buttons, test modes are not obtained.

[Ordinary test mode]
1. CD Test Mode (TEST 1).....................................BASS/TREBLE + STOP
2. Tuner Test Mode (TEST 2).................................BASS/TREBLE + VOL+
3. Electronic Volume Test Mode (TEST 3)............. BASS/TREBLE + VOL–
4. Timer Test Mode (TEST 4)................................. MEMORY/SET + STOP
5. LCD Test Mode (TEST 5)................................... MEMORY/SET + VOL–
6. Electric CD Lid Aging Test Mode (TEST 8)........ MEMORY/SET + VOL+

[Self-diagnosis Test Mode]
1.  Button input diagnosis test mode (TEST6).…....MEMORY/SET + PLAY

Processes are different depending on destinations at initial settings.