Philips HTS3551, Service Manual

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REPAIR INSTRUCTIONS-part one
HTS3551REPAIR CHART
A
All fuction
is not working
B
Power supply
is not working
C
All function
is not sound
D
Key board
is not function
AUX in is
not sound
E F
MP3 in is
not sound
G
Coaxial in
is not sound
I
Tuner is
not sound
H
Optical in
is not sound
A
Check all system
all cable is loose
or bad IN T
Panel stanby LED
show working or Not
Re-i nsert and fix
the cable
Check back power PC B
F9 1 bad cause damage
Change F901
Check RB 904 pin11 CN 401
Pin11 approx 3.3V
Check IC 101.Q106
And Its Conjoint parts
Check +3.3V power
supply circuit
Check RB 904 pin4 CN 401
Pin4 5V
Check repair switch
power circuit ( See B)
Check all Vo ltage
3.3V and 1.8V
give circuit
Check IC 209 Pin238 pin239
OSC frequency 27MHz)
Repair main pcb between
IC 103 IC 201 IC 204
And Its Conjoint parts
YE S
NO
NO
BAD
NO
OK
YES
WO RK
NO
CORRE CT
YE S Y ES
All fuction
is not working
Check repair control
PC B Standby circuit
NO
Power supply
is not working
B
All Vo ltage
No Output
Check F901
Bad Cause Damage
Check BK 3V 3
Working or Not
No
YE S
No
+31.5V Vo ltage
No Output
Check Repair IC 901 Q902
IC 906 And Its conn circuit
-27V Vo ltage
No Output
+12V Vo ltage
No Output
+5V Vo ltage
No Output
Check Q902 IC 905 D916
And Its Conjoint Part
Check D908 Q914
And Its Conjoint Part
Check D912 Q910
And Its Conjoint Part
Check D911 Q907
And Its Conjoint Part
No
BK 3V 3 Vo ltage
No Output
Check IC 906
And Its Conjoint Part
Check POWE R IC
Vo ltage +29V
Yes
See Contents B
Check IC721 R 433
And Its Conjoint Part
Yes
No
Check IC 401 Pin9/15
Pin36/54 Vo ltage +3.3v
OK
No
All function
is not sound
Check IC 602
And Its Conjoint Part
OK
No
Check IC 601 Pin Vo ltage
Pin17/18 osc frequency 27MHz)
Check IC 601
And Its Conjoint Part
Check Power ic
Vo ltage 12V
Check FB 9093 FB 9901
Pin 1,21,22,23,44
YE S
OK
And Its Conjoint Part
C
Coaxial in
is not sound
IN T
OK
Check JK 102
IN T OR NO
REPA IR ok
REPA IR ok
No
OK
Check L20 9 C133
G
Check L 151/L152
OK
Check IC151 Pin3 /19/22
No
See C
3.3V
Ye s or No
Optical in
is not sound
IN T
OK
Check JK 103
IN T OR NO
REPA IR ok
Check And Repair
R 128
No
Check R 127 C136
OK
Check JK 103 pin1
3.3V
OK
H
Check L 151/L152
OK
Check IC151 Pin3 /19/22
No
See C
3.3V
f=12MHz
Ye s or No
Tuner is
not sound
Check CN 101 Pin4= +5V
Check TU NER PA CK
No
Check IC171 And
Check CN 3 1 Pin5(SC L)
No
I
Check L 151/L152
OK
Check IC151 Pin3 /19/22
See C
3.3V
And Its Conjoint Parts
Its Conjoint Parts
Affirm Correct
Ye s
OK
Pin6(S DA ). Pin9 (T U_CE )
Key board
is not function
Check IC1 Pin17
Vo ltage 3.3V
YE S
OK
Check the cable connect
CN 701 loos e or bad IN T
Check R20
And Its Conjoint parts
No
Check IC1 Pin9(D AT )
OK
Check R 21.R 22 And
Their Conjoint Parts
No
Check IC 1
OK
D
Re-i nsert and fix
the cable
Check IC1 Pin18(CLK)
And Their Conjoint Parts
Check JK 101
Check IC171 Pin5/36/46
IN T or No
3.3V Pin14 approx
Check L20 4/L205/FB9904
Check L 151/L152
Change this jk101
OK
No
OK
Check IC151 Pin3 /19/22
Yes
IN T
No
See C
3.3V
E
+5.0V Ye s or No
AUX in is
not sound
Check JK 602
IN T or No
Change this jk602
OK
IN T
F
Check IC171 Pin5/36/46
3.3V Pin14 approx
Check L2 4/L2 5/FB9904
Check L 151/L152
OK
Check IC151 Pin3 /19/22
Yes
No
See C
3.3V
+5.0V Ye s or No
MP3 in is
not sound