Read Sony HCD-VZ10 Service Manual online
4
SECTION 1
SERVICE NOTE
SELF-DIAGNOSIS
This model has the self-diagnosis function for the VIDEO and AUDIO decoder sections.
Connecting to the LED between TP522 and TP523 on the VIDEO BOARD.
Immediately after the power on, the self-diagnosis function searches each operation of IC’s around the mechanism control microcomputer
(IC701). and TP5
The results can be checked by LED of the VIDEO board.
Connecting to the LED between TP522 and TP523 on the VIDEO BOARD.
Immediately after the power on, the self-diagnosis function searches each operation of IC’s around the mechanism control microcomputer
(IC701). and TP5
The results can be checked by LED of the VIDEO board.
Oscilloscope (Waveform)
Symptom
No error
MPEG decoder (IC505)
error
error
MPEG decoder (IC505)
or
DRAM (IC507) error
or
DRAM (IC507) error
[VIDEO BOARD] (SIDE A)
H
L
Light
2 time blinking
H
L
H
L
3 time blinking
TP523 TP522
LED
IC505
100
91
33
64
90
65
1
32
Ver 1.2 2002.06
CN503
CN701
Jig (J-2501-076-A)
Jig (J-2501-165-A)
Jig (J-2501-167-A)
Jig (J-2501-050-A)
SERVICE POSITION
• CD MECHANISM BLOCK
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