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REPAIR INSTRUCTIONS-part one
A
B
All fuction
Power supply
is not working
is not working
A
All fuction
is not working
YE S
Check all system
Re-i nsert and fix
all cable is loose
the cable
or bad IN T
NO
NO
BAD
Panel stanby LED
Check back power PC B
show working or Not
F9 1 bad cause damage
OK
NO
Check RB 904 pin11 CN 401
Pin11 approx 3.3V
WORK
YES
NO
Check IC 101.Q106
And Its Conjoint parts
NO
Check repair switch
Check RB 904 pin4 CN 401
power circuit ( See B)
Pin4 approx +5V
CORRE CT
YE S
Y ES
Check all Vo ltage
Check IC 209 Pin238 pin239
3.3V and 1.8V
OSC frequency 27MHz)
give circuit
E
AUX in is
not sound
IN T
Check JK 101
Change this jk101
IN T or No
OK
No
Check IC171 Pin5/36/46
Check L204/L205/FB9904
approx +3.3V Pin14 approx
+5.0V Ye s or No
Yes
No
Check IC151 Pin3 /19/22
Check L 151/L152
approx +3.3V
OK
See C
2 - 3
C
All function
Key board
is not sound
is not function
B
Power supply
is not working
No
All Vo ltage
No Output
Change F901
YE S
Check +3.3V power
supply circuit
Check F901
Bad Cause Damage
Check repair control
PC B Standby circuit
No
Repair main pcb between
IC 103 IC 201 IC 204
And Its Conjoint parts
F
MP3 in is
not sound
IN T
Check JK 602
Change this jk602
IN T or No
OK
Check IC171 Pin5/36/46
Check L2 4/L2 5/FB9904
approx +3.3V Pin14 approx
+5.0V Ye s or No
Yes
No
Check IC151 Pin3 /19/22
Check L 151/L152
approx +3.3V
OK
See C
HTS3551REPAIR CHART
D
E
AUX in is
not sound
+31.5V Vo ltage
Check Q902 IC 905 D916
No Output
And Its Conjoint Part
-27V Vo ltage
Check D908 Q914
No Output
And Its Conjoint Part
+12V Vo ltage
Check D912 Q910
No Output
And Its Conjoint Part
Check D911 Q907
+5V Vo ltage
And Its Conjoint Part
No Output
Check IC 906
BK 3V 3 Vo ltage
And Its Conjoint Part
No Output
Check BK 3V 3
Check Repair IC 901 Q902
No
IC 906 And Its conn circuit
Working or Not
G
Coaxial in
is not sound
IN T
Check JK 102
REPA IR ok
IN T OR NO
OK
No
Check L209 C133
REPA IR ok
Ye s or No
OK
No
Check IC151 Pin3 /19/22
Check L 151/L152
approx +3.3V
OK
See C
2 - 3
F
G
MP3 in is
Coaxial in
not sound
is not sound
C
All function
is not sound
Yes
No
Check POWE R IC
See Contents B
Vo ltage +29V
OK
YE S
Check Power ic
Pin 1,21,22,23,44
Check FB 9093 FB 9901
Vo ltage 12V
And Its Conjoint Part
OK
No
Check IC 401 Pin9/15
Check IC721 R 433
Pin36/54 Vo ltage +3.3v
And Its Conjoint Part
OK
No
Check IC 601 Pin Vo ltage
Check IC 602
Pin17/18 osc frequency 27MHz)
And Its Conjoint Part
Yes
Check IC 601
And Its Conjoint Part
H
Optical in
is not sound
IN T
Check JK 103
REPA IR ok
IN T OR NO
OK
No
Check JK 103 pin1
Check And Repair
approx +3.3V
Ye s or No
R 128
OK
Check R 127 C136
f=12MHz
OK
No
Check IC151 Pin3 /19/22
Check L 151/L152
approx +3.3V
OK
See C
H
I
Optical in
Tuner is
is not sound
not sound
D
Key board
is not function
YE S
Re-i nsert and fix
Check the cable connect
the cable
CN 701 loos e or bad IN T
OK
No
Check IC1 Pin17
Check R20
Vo ltage approx +3.3V
And Its Conjoint parts
OK
No
Check IC1 Pin9(D AT )
Check R 21.R 22 And
Their Conjoint Parts
Check IC1 Pin18(CLK)
OK
Check IC 1
And Their Conjoint Parts
I
Tuner is
not sound
No
Check TU NER PA CK
Check CN 101 Pin4= +5V
And Its Conjoint Parts
Ye s
No
Check IC171 And
Check CN 3 1 Pin5(SC L)
Its Conjoint Parts
Pin6(S DA ). Pin9 (T U_CE )
Affirm Correct
OK
Check IC151 Pin3 /19/22
Check L 151/L152
approx +3.3V
OK
See C
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