DOWNLOAD Panasonic SA-BFT800EE / SA-BFT800EEK Service Manual ↓ Size: 15.52 MB | Pages: 127 in PDF or view online for FREE

Model
SA-BFT800EE SA-BFT800EEK
Pages
127
Size
15.52 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio / BLU-RAY DISC HOME THEATER SOUND SYSTEM
File
sa-bft800ee-sa-bft800eek.pdf
Date
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Panasonic SA-BFT800EE / SA-BFT800EEK Service Manual ▷ View online

41
8 Troubleshooting Guide
8.1.
Troubleshooting Guide for F61 and/or F76
Symptom
Checking items
Possible Fault(s)
Remarks
Set cannot ON
1
AC Cord 
1
Faulty AC Cord,Loose connection
Refer  to
2
AC Inlet P5701
2
P5701 soldier crack,dry joint,etc.
SMPS
3
Fuse  F1
3
F1 fuse open
P.C.B.
4
Photocoupler 
PC5702,PC5799
4
PC5702/PC5799 sildier crack,dry joint ,short 
circuit,open circuit,etc
Fig. 1.
Refer  to
SMPS
P.C.B.
Fig. 1.
Refer  to
Power
P.C.B.
Fig. 2.
Refer  to
D-Amp
P.C.B.
Fig. 3.
5
Switching IC IC5701
5
Faulty IC5701
6
Switching IC IC5799
6
Faulty IC5799
Set can ON
1
Transformer T5701
1a Short circuit between Pin 12 and pin 14
then F76
1b Short circuit between Pin 13 and pin 14
1c
Short circuit between Pin 14 and 15
2
Power P.C.B.
2a Check connection between Power P.C.B (P2916* 
& CN2917) and SMPS P.C.B (CN5802 & 
P5803)
2b L2902 Open (No input to IC2901)
2c
Faulty IC2901 (No output voltage at pin 10 & 11)
2d Faulty Q2902 & Q2903 (Regulator)
2e L2907 open (No DC +12v)
2f
L2908 open (No DC +5v)
3
3
Check cable connection between D-Amp P.C.B.
(CN5400) and SMPS P.C.B.. 
4
Photocoupler
4
PC5720 solder crack
PC5720
dry joint,short circuit,open circuit,etc
Set can ON
1
Rectifier D5802
1a Improper contact between D5802
working normally
to heatsink
for some time
1b Set trigger temperature protection
then F76
42
8.2.
SMPS P.C.B.
Figure 1. SMPS P.C.B.
FUSE: F1
Photocouple:
PC5702, PC5799
Switching IC: IC5799
Switching IC: IC5701
Transformer: T5701
Rectifier: D5802
43
8.3.
Power P.C.B.
Figure 2. Power P.C.B.
P2916,
L2907
CN2917,
L2908
(Side B of Power P.C.B.)
(Side A of Power P.C.B.)
IC2901
L2902
Q2903
Q2902
44
8.4.
D-Amp P.C.B.
Figure 3. D-Amp P.C.B.
CN5400
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