Sony AVD-K600P Service Manual ▷ View online
13
AVD-K600P
SECTION 3
ELECTRICAL ADJUSTMENT
3-1. VCR SECTION ELECTRICAL ADJUSTMENT
1. Servo Adjustment
1) PG Adjustment
• Adjustment And Specification
• Test Equipment
a) OSCILLOSCOPE
b) NTSC MODEL : NTSC SP TEST TAPE
MODE
PLAY
• Adjustment Procedure
a) Insert the SP Test Tape and play.
b) Connect the CH1 of the oscilloscope to the H/SW(W373, W374) and CH2 to the Video Out for the VCR.
c) Trigger the mixed Combo Video Signal of CH2 to the CH1 H/SW(W373, W374), and then check the dis-
b) Connect the CH1 of the oscilloscope to the H/SW(W373, W374) and CH2 to the Video Out for the VCR.
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
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.
• PG Adjustment Method
a-1) Payback 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,
b-2) Press the “O” key on the Remote controller and the “PLAY” key on the Front Panel the same time,
then it goes in to Tracking initial mode.
c-3) Repeat the above step(No.b-2), then it finishes the PG adjusting automatically.
d-4) Stop the playback, then it goes out to PG adjusting mode after mony the PG data.
d-4) Stop the playback, then it goes out to PG adjusting mode after mony the PG data.
• CONNECTION
• WAVEFORM
V.Out
H/SW(W373, W374)
R/C TRK JIG KEY
6.5
±
0.5H
MEASUREMENT POINT
ADJUSTMENT POINT
SPECIFICATION
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)
14
AVD-K600P
3-2. ELECTRICAL TROUBLESHOOTING GUIDE
1. Power (SMPS) CIRCUIT
NO 5.3VA.
Replace the F101.
(Use the same Fuse)
Is the F101 normal?
Is the R101
normal?
normal?
Is the BD101
normal?
normal?
NO
NO
NO
NO
NO
NO
Replace the
BD101.
BD101.
Replace the R101.
Is the D102
normal?
normal?
Check or Replace
the D102.
the D102.
Replace the D112.
Replace the IC103.
YES
YES
YES
YES
YES
YES
YES
Is Vcc(8.5~21V) sup-
plied to IC101 Pin7?
plied to IC101 Pin7?
NO
Is the D112 normal?
Is there about 2.5V
at the IC103 Vref?
at the IC103 Vref?
Check the Main PCB
5.3VA/5.0V Line short?
5.3VA/5.0V Line short?
(1) No 5.3VA (SYS/Hi-Fi/TUNER)
NO 12VA.
Check or Replace
the D110.
the D110.
Is the Vcc(13V) supplied
to (+) terminal in D115?
to (+) terminal in D115?
Check or Replace
the Motor Vcc.
the Motor Vcc.
Is the Vcc(12V) supplied
to (-) terminal in D115?
to (-) terminal in D115?
NO
NO
Replace the D115.
YES
YES
YES
(2) No 12VA (TO CAP, DRUM MOTOR)
NO 5.0VA.
5.3VA Line Check.
Is 5.3VA put into
the Q160 Emitter?
the Q160 Emitter?
Is about 5V put into
the Q160 Base?
the Q160 Base?
Is the Q162 Base
“H”?
“H”?
NO
NO
Check the Power
Control.
Control.
NO
Check or Replace the
Q162, R157, R158, R159.
Q162, R157, R158, R159.
YES
YES
YES
Check or Replace
the Q162/Q160.
the Q162/Q160.
YES
(3) No 5.0V (SYS/Hi-Fi/TUNER)
15
AVD-K600P
NO 5V.
5.3VA Line Check.
Is 5.3VA put into
the Q160 Emitter?
the Q160 Emitter?
Is about 5V put into
the Q160 Base?
the Q160 Base?
Is the Q162 Base
“H”?
“H”?
NO
NO
NO
Check the Power
Control.
Control.
Check or Replace the
Q162, R157, R158, R159.
Q162, R157, R158, R159.
YES
YES
YES
YES
Check or Replace
the Q162/Q160
the Q162/Q160
(4) No 5V (TO DVD)
No 33V.
Check the Power
Control.
Control.
Is Q163 Base “H”?
Check or Replace
Q161, R154, R155.
Q161, R154, R155.
NO
YES
YES
(5) No 33V (TUNER)
No REG 12V.
Check or Replace
D110.
D110.
Is 13V put into the
Q156 Collector?
Q156 Collector?
Is 13V put into the
R153 Base?
R153 Base?
NO
Check 33V Line.
NO
YES
YES
Check or Replace the Q156,
ZD103, R153, C151.
ZD103, R153, C151.
YES
(6) No REG 12V
NO 8V.
Check or Replace
the D110.
Is Vcc(13V) supplied to
(+) terminal in D114?
(+) terminal in D114?
Is the Q162 Base
“H”?
“H”?
Is Vcc(12V) supplied
to IC151 Pin1?
to IC151 Pin1?
NO
NO
Check or Replace
the D114.
NO
Check the Power
Control.
YES
YES
YES
Check or Replace
IC151, R170, C154.
IC151, R170, C154.
YES
(7) No 8V(TO DVD)
16
AVD-K600P
2. SYSTEM/KEY CIRCUIT
(1) AUTO STOP
(2) The unstable loading of a Cassette tape
Auto Stop
Does the SW30 waveform
appear at the IC501
Pin18?
appear at the IC501
Pin18?
Do the T-UP Reel Pulses
appear at the IC501 Pin80?
appear at the IC501 Pin80?
Is 12V applied to the
PMC01 Pin8?
Check the Drum Motor
signal.
signal.
Does 5V appear at the
RS501?
RS501?
Check the Q160 Power
Circuit.
Circuit.
Refer to “SMPS DRUM
12 Volt Trouble Shooting”.
12 Volt Trouble Shooting”.
Is 5V applied to the
R531 ?
R531 ?
Refer to SMPS 5.3VA
troubleshooting.
troubleshooting.
Check the IC501
Pins22, 23, 24, 25.
Pins22, 23, 24, 25.
Do T/UP Reel Pulses
appear at the point
between R556 and R536?
appear at the point
between R556 and R536?
Replace the T/UP Reel
Sensor (RS501).
Sensor (RS501).
Check the CST SW and
the peripheral circuitry.
the peripheral circuitry.
Replace the IC501.
The unstable loading of a
Cassette tape
Cassette tape
Does the “H” signal appear
at the IC501 Pin60 during
inserting the CST ?
at the IC501 Pin60 during
inserting the CST ?
Does the “L” signal appear
at the IC501 Pin19 during
inserting the CST?
at the IC501 Pin19 during
inserting the CST?
Check the Deck
Mechanism.
Mechanism.
Caution :
Auto stop can occur because Grease or Oil is dried up
YES
YES
YES
NO
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
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