Main Unit Repair Chart - Philips HTS3021/98 Service Manual

Ａ
AII Function NO
Working
Ａ
AII Function NO Working
YES
Check AII System, AII Coble RE-insert and fix the
is Loose or bad: INT cable
not
not
Check Back Power PCB
Panel stand LED show
F901 Bad cause Damage
working or Not
Check Con902 pin1
+5V affirm Correct
working
Check control PCB
IC901 and their conjoint
Part
Check servo pcb Check Repair
Check U100 PIN2 1V8 U102,U104,U105,U106
Check U101 PIN2 3V3 Circuit
ok
Check CON903 PIN2 Check Switch power
M5V affirm Correct Supply Circuit
D
DVD Audio not
sound
Check open/close and disc not Check cn102 cn101and
change working or not cn105 to dvd loader,
cable loose or bad int
ok
Check cn102 to DVD ok
Re-insert and fix the
loader loose or bad not
cable
not
Hae picture output Yes not
Check ic804 their
or No
conjoint part
ok
Check IC u102 AND
con100 its conjoint part
B C
Power supply NO ALL Function NO
working Sound
B
Power supply NO
Working
ALL ALL voltage voltage
output output
bad
Change F901
Check F901 Bad
Cause Damage
no
Repair between T901
not
Circuit
Check ic901
Working Or Not
Check power
Transformer Working
Or Not
Aux/TV
Sound
Check U107 U108 and its
conjoint part offirm working
not
Check U102 and their
cojoint part
Check U107 U108 PIN7=-5.1
pin16=+5V
Check U109 and its conjoint
part offirm working
ok
Check repair Between
ic801
Check U102 PIN109,210,211and
214 its conjoint part

MAIN UNIT REPAIR CHART

D
DVD Audio NO Aux/TV in NO
Sound Sound
+27V Voltage No Check D916 and its
not
Output conjoint part
No No
+5V Voltage No Check D911 D912
Output and its conjoint part
YES
+/-12v Voltage No Check D908 D910
Output and its conjoint part
YES
Repair The Part
not
Check Q901 and its Check Repair D905 and
conn circuit conn circuit
YES
YES
Repair The part
Ｅ
in No
not
Check between U102
PIN162 163 164 and their
cojoint part
not not
not not
Check repair Between
L131=5V and their conjoint
part
not
Ｅ
F
Tuner NO Sound
C
ALL Function No
Sound
ok
Check cn801 vcc
Voltage=27V
ok
Check IC801A IC801B
Voltage correct is ok
ok
Check ic801a ic801b pin
23 Voltage is 3.3v
Ｆ
Tuner NO Sound
not
Check D101 Check cn111
Voltage=10.1v pin9=9V
yes
not
Check Q101 and Check IC112 PIN4=-12V
their conjoint part PIN8=+12V and
conjoint part
not
According AUX/TV
REPAIR
not
See Contents B
not
Check repair D916 and its
conjoint part
not
Check repair Q804=3.3V
and its conjoint part
yes
Check u102 PIN198 199 200
and pin201 other conjoint part
not
Alternate tuner
other