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9

1) PG Adjustment

• Adjustment And Specification

• Test Equipment

a) OSCILLOSCOPE

b) NTSC MODEL : NTSC SP TEST TAPE

PLAY

a) Insert the SP Test Tape and play.
b) Press the “O” key on the Remote controller and the “PLAY” key on the Front Panel the same time, the

unit then goes in to Tracking initial mode.

c) Trigger the mixed Combo Video Signal of CH2 to the CH1 H/SW(W373, W374), and then check the dis-

tance (time difference), which is from the selected A(B) Head point of the H/SW(W373, W374) signal to
the starting point of the vertical synchronized signal, to 6.5H 

±

0.5H (412

µ

s, 1H=63

µ

s).

Note - Press FRONT CH UP KEY and FRONT PLAY KEY on Deck playback, and it goes in to ATR PRE-

SET. after the SP Test Tape is inserted.

a-1) Playback the SP standard tape
b-2) Press the “O” key on the Remote controller and the “PLAY” key on the Front Panel the same time,

Tracking initial mode.  

c-3) Repeat the above step(No.b-2), the unit will then finish the PG adjusting automatically.
d-4) Stop the playback, the unit then exits PG adjusting mode after saving the PG data.

V.Out

H/SW(W373, W374)

R/C TRK JIG KEY

6.5 

±

0.5H

 V.Out

 H/SW(W373, W374)

OSCILLOSCOPE

CH1 CH2

V.out

H/SW

R/C KEY

(W373, W374)

H/SW

Composite

VIDEO

6.5H(412

µ

s)

10

NO 5.3VA.

Replace the F101.

(Use the same Fuse)

Is the F101 normal?

Is the TH101
normal?

Is the BD101
normal?

NO

NO

NO

NO

NO

NO

Replace the
BD101.

Replace the TH101.

Is the D105
normal?

Check or Replace
the D105.

Replace the D129.

Replace the IC106.

YES

YES

YES

YES

YES

YES

YES

Is Vcc(8.5~21V) sup-
plied to IC104 Pin3?

NO

Is the D129 
normal?

Is there about 2.5V
at the IC106 Vref?

Check the Main PCB
5.3VA/5.0V Line short?

(1) No 5.3VA (SYS/Hi-Fi/TUNER)

NO 12VA.

Check or Replace
the D126.

Is the Vcc(13V) supplied
to (+) terminal in D126?

Check or Replace
the Motor Vcc.

NO

YES

YES

(2) No 12VA (TO CAP, DRUM MOTOR)

NO 5.0VA.

5.3VA Line Check.

Is 5.3VA put into
the Q167 Emitter?

Is about 5V put into
the Q167 Base?

Is the Q169 Base
“H”?

NO

NO

Check the Power
Control.

NO

Check or Replace the
Q169, R175, R176, R177.

YES

YES

YES

Check or Replace
the Q167/Q169.

YES

(3) No 5.0V (SYS/Hi-Fi/TUNER)

11

NO 5V.

5.3VA Line Check.

Is 5.3VA put into
the Q168 Emitter?

Is about 5V put into
the Q168 Base?

Is the Q169 Base
“H”?

NO

NO

NO

Check the Power
Control.

Check or Replace the
Q169, R175, R176, R177.

YES

YES

YES

YES

Check or Replace
the Q168/Q169

(4) No 5V (TO DVD)

No 33V.

Check the Power
Control.

Is Q163 Base “H”?

Check or Replace
Q163, R168, R169.

NO

YES

YES

(5) No 33V (TUNER)

NO 8V.

Check or Replace

the D126.

Is Vcc(13V) supplied to
(+) terminal in D126?

Check or Replace
IC161, C163.

Is Vcc(12V) supplied
to IC160 Pin1?

NO

NO

Check or Replace

the D163.

YES

YES

YES

(6) No 8V(TO DVD)

12

(1) AUTO STOP

(2) The unstable loading of a Cassette tape

Auto Stop

Does the SW30 waveform
appear at the IC501
Pin18?

Do the T-UP Reel Pulses
appear at the IC501 Pin80?

Is 12V applied to the

PMC01 Pin8?

Check the Drum Motor
signal.

Does 5V appear at the
RS501?

Check the Q160 Power
Circuit.

Refer to “SMPS DRUM
12 Volt Trouble Shooting”.

Is 5V applied to the
R531 ?

Refer to SMPS 5.3VA
troubleshooting.

Check the IC501
Pins22, 23, 24, 25.

Do T/UP Reel Pulses
appear at the point
between R556 and R536?

Replace the T/UP Reel 
Sensor (RS501).

Check the CST SW and
the peripheral circuitry.

Replace the IC501.

The unstable loading of a
Cassette tape

Does the “H” signal appear
at the IC501 Pin58 during
inserting the CST ?

Does the “L” signal appear
at the IC501 Pin60 during
inserting the CST?

Check the Deck
Mechanism.

Auto stop can occur because Grease or Oil has dried up

YES

YES

YES

NO

YES

YES

YES

YES

NO

NO

NO

NO

NO

NO

NO

YES

YES

YES