Ma In Unit Repair Chart - Philips HTS3355 Service Manual

REPAIR INSTRUCTION (Part One)
A B
Po wer Su pply
A ll F unctio n
No Wo rkin g No Wo rkin g
A
A ll function
No workin g
YE S
Check all sy stem
Re -i nsert and fi x
a ll cable is l oos e
the cabl e
or bad IN T
NO
NO
Pa nel stanby LE D Check back power
sh ow work in g or No t F 901 bad cause da ma ge
Check CN905 2pin
BK 5V if righ t
Check repair control
WORK
PC B Standb y circui t
NO
Check repair switch
Check RB 901 1pin
po wer ci rcuit ( See B)
+5 V= 5V
V CC=5V
CHECK
VD 33= 3.3V
VD 18= 1.8V
CORRECT
Check all Voltage
Check IC208 Pin234 OS C
YE S
3.3V and 1.8V
frequenc y 27M Hz
give circuit
Repair ma in pcb betw een
IC 202 IC 206 IC 208and IC 602
circui t
2 - 1

MA IN UNIT REPAIR CHART 1/ 3

C D E
A ll F unctio n Ip od inpu t A udi o line IN
No So und No So und No Ou tput
B
Power Supply
No workin g
A ll Vo lta ge
No Ou tput
BA D
Change F 901
OK
NO
Check F 901
Check +5V power
supply circui t
Ba d Cause Damage
YE S
Check BK 5V +5V
Wo rking or No t
YE S
F G H
Wi reless
DVD A udi o MP 3 In
No Ou tput
No So und No So und
+ 35.5V Voltage
No Ou tput
No
- 27V Voltage
No Ou tput
+ 12V Voltage
No Ou tput
YE S
+5 V Vo lta ge
No Ou tput
BK 5V Voltage
No
No Ou tput
No Check Repair IC 901 IC 902
A nd It s co nn circui t
2 - 1
I L
M
CO AX IA L In
T uner No So und No Sv ideo Output HD MI No Ou tput
No So und
C
A ll Functio n
Check Q901 Q909 IC 901
A nd It s Co nj oi nt Part No S ound
Ye s
Check PO WE R IC
Check Q912 IC 902
A nd It s Co nj oi nt Part Vo lta ge + 35.5V
OK
Check Q912 IC 902
Check Q305 C
A nd It s Co nj oi nt Part Vo lta ge 3.3V
OK
Check Q912 IC 902
Check Q902 C
A nd It s Co nj oi nt Part
Vo lta ge 3.3V
OK
Check Q912 IC 902 Check IC 505 51P IN
A nd It s Co nj oi nt Part
HIGH( 3.3V ) OR LO W( 0V )
Ye s
Check IC 501 IC 502 IC 503 IC 504
A nd It s Co nj oi nt Part
O P Q
No CVBS Ou tput No Y Pr Pb ou tput
No
See Contents B
No CheckQ306 D304 ZD303
A nd It s co nn part s
No CheckQ902 ZD905 IC 505
A nd It s co nn part s
LO W CheckQ501 Q502 IC 505
A nd It s co nn part s