Panasonic SA-PTX7, Service Manual

Page: 174 / 213

24.4. Troubleshooting Flowchart of HDD Unit, CD Drive Unit & Main Micron
(IC1502)
SYS6V SYS3.3V +6V?
Left SP
Power section
delay sound on?
"Please wait" appear?
IC501 function?
12V line OK?
IC1502 OK?
15V line OK?
FL
Display
lighting on?
3.3V in IC501?
Comfirm R
Y701,Q701,
R721,TH701, etc
FFC connect to FP1201 correctly?
Confirm HDD_12V
,
HDD_5V connector CN721, etc
Comfirm Sub Micron IC501, X501, etc
Comfirm Power section T721, IC727, D725, LB707 etc
Comfirm Power section IC704, L722 etc
Comfirm Regulator section IC706, L729, Q704 etc
Comfirm P3007, FL, etc
Defectiveness of HDD
Defectiveness of Flashrom, IC1400, LB1401, etc Defectiveness of
A
T
A
Bridge
IC1200, LB1202, etc
Confirm panel P
.C.B., tact-1,
tact-2, etc Confirm, change, replace to cable C9V
, VREF+,
connector CS901, etc
Defectiveness of SD-RAM, IC1300, 1301, LB1301, LB1302, etc
Confirm changing normal music disk
Copy disk may not play
.
Defectiveness of micron IC1502, X1501, solder
Defectiveness of mechanism (traverse unit)
Demarcation of Main Micron breakdown
Demarcation of HDD
Digital P
.C.B.
Comfirm for Open etc
AC INPUT
IN
POWER SW ON
Comfirm Power section, T701, F701, D702, D704, D705, D707, IC701, etc
YES YES YES
NO NO NO
YES YES
YES
YES
YES YES YES
Start up OK?
Connection of FP1201 40pins FFC correctly?
YES
YES
YES
YES
YES
NO
NO
NO
NO
T
ray eject out?
Reliability test 1 ejection key OK?
YES
YES
NO
CD function in normal muzic disk?
YES
NO
CN508 to CS901 7 pins cable connection OK?
YES
NO
+9V
, VREF+ function
in mechanism?
YES
NO
CD play?
HDD power on?
IC1200 function?
YES
NO
NO
IC1400 OK?
YES
IC1200 OK?
YES
NO NO
IC1300, 1301 OK?
YES
NO
NO
NO
Normal
NO
NO
NO
Confirm input/output of A
T
A
Bridge IC1200
NO
Audio P
.C.B.
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