12
6. Trouble Shooting Guide
START
1. INITIAL OPERATING
Is Standby
LED on?
No
Initial Operation OK.
Check if IC501
pin 207 is high?
Yes
Check OSC
waveform of
XC501.
Yes
Check I2C Line
of IC504.
Yes
Yes
Check interface
of VFD Driver
Yes
Is Power on?
Check Connection CN701.
Check Power Supply.
No
No
No
No
No
Yes
Replace Reset IC.
IC508.
Check DVD Power Supply
Section, PT902.
Replace Crystal, XC501.
Check Devices connected I2C
Line.
IC201, IC401, IC408.
Check VFD Data Interface.
VFD_DATA/CLK.
Replace Front PCB Ass’y.
Check interface
of SDRAM
No
Check CLK of SDRAM.
Replace Flash Memory.
Is Power on?
1
No
Yes
2
Yes
Front Circuit
Содержание HC-4130
Страница 36: ...8 Internal Block Diagram of ICs CS4360 34 ES6629FD ES6698FD Downloaded From TheatreSystem Manual com Manuals ...
Страница 38: ...STA505 8 Internal Block Diagram of ICs 36 PT6315 Downloaded From TheatreSystem Manual com Manuals ...
Страница 39: ...8 Internal Block Diagram of ICs STA308A 37 Downloaded From TheatreSystem Manual com Manuals ...
Страница 55: ...12 Printed Circuit Diagram 53 Main Top View HC 4130 4230 Only Downloaded From TheatreSystem Manual com Manuals ...