Sony AVD-K600P Service Manual ▷ View online
25
AVD-K600P
(2) No Sound
No Sound.
Check the Vcc of TU701 Pins3, 14.
YES
Check 5.2V, 33V Line.
NO
Check the Tuner SiF signal at IC801
Pin57.
Pin57.
YES
Check the Audio of IC801 Pins78, 80.
YES
Check the Signal flow from IC801 Pins78,
80 to JK601 Audio out(L), (R)
80 to JK601 Audio out(L), (R)
YES
Check the Tuner SIF of TU701 Pin13.
NO
1. Check the Vcc(5.3VA, 9V) of IC801
Pins3, 5, 36, 54.
2. Check the IIC Clock and Data at IC801
Pins37, 38.
NO
26
AVD-K600P
Check power.
Check REC start “H” signal
of
of
µ
-COM.
Check IC501 Pin 19.
(Audio Swich 30)
Check the Vcc of IC801.
(Pins 3, 15, 32, 46)
(Pins 3, 15, 32, 46)
Is Pin 30 of IC801 over
3.5V ?
3.5V ?
Is the Head switching signal
IC801 Pin 39 O.K?
Check the connection at
P3D01 if good then
Replace IC801.
P3D01 if good then
Replace IC801.
Check Ports of
µ
-COM.
Check A.MUTE port of
µ
-COM (Pin High of
IC501).
Replace IC801.
Hi-Fi Playback.
No sound
Check the Hi-Fi Selection
Switch and the Tape quality.
Switch and the Tape quality.
Is the RF waveform at
IC801 Pin 23 over 3V
Vp-p?
IC801 Pin 23 over 3V
Vp-p?
Check the Contact point
of Audio Output.
of Audio Output.
Do Audio signals appear at
IC801 Pin 80(L-CH),
78 (R-CH)?
IC801 Pin 80(L-CH),
78 (R-CH)?
Is IC801 Pin 49(A.Mute)
“High”?
“High”?
Check IC801 Pin 37(Data),
Pin 38(Clock).
Pin 38(Clock).
A.
YES
NO
YES
NO
NO
NO
NO
7. Hi-Fi Circuit
YES
YES
YES
YES
YES
YES
NO
YES
27
AVD-K600P
Hi-Fi REC.
It is impossible to record and playback
Hi-Fi Audio signal.
Hi-Fi Audio signal.
Check Vcc of IC801. (Pins 3, 15, 32, 46)
Check Power.
Check ports of
µ
-COM.
Check the Port of
µ
-COM.
Check Audio Input signal Line
(9, 11, 12, 71, 73, 74), Tuner(57).
(9, 11, 12, 71, 73, 74), Tuner(57).
Replace IC801.
Check the Port of u-COM.
B.
Check IC801 Pin 37(Data),Pin 38(CLOCK).
Is IC501 Pin 84(A.Mute) “High”?
YES
YES
YES
Are Audio signals present at IC801
Pins 78, 80?
Do FM Audio signals appear at IC801
Pin 26?
Pin 26?
YES
Is IC801 Pin 17(REC “H”) “High”?
Check the Contact Points of Drum
Connector if good then Replace the Drum.
YES
YES
YES
NO
NO
NO
NO
NO
NO
28
AVD-K600P
3-3. DVD & AMP SECTION ELECTRICAL TROUBLESHOOTING GUIDE
1. System operation flow
Power On
No
Yes
Yes
Yes
No
No
No
Show LOGO
Tray Closed?
Tray Close to Closed position
SLED Moves to Inner Position
Recieve
OPEN/ CLOSE
Key?
Receive
CLOSE Key?
1. Stop Playback & Open Tray
2. Display tray open message & LOGO
2. Display tray open message & LOGO
1. Execute Pressed Key & IR Key
2. Systemoperati on Routi ne Loop
2. Systemoperati on Routi ne Loop
1. Judge whether have disc and disc type
2. Jump to related disc reading procedure
2. Jump to related disc reading procedure
SLED at Inner
Side?
1. 8032 initializes SERVO, DSP & RISC registers
2. Write RISC code to SDRAM
3. Reset RISC
2. Write RISC code to SDRAM
3. Reset RISC
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