Philips HTS3551, Service Manual

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REPAIR INSTRUCTIONS-part two
MAIN UNIT REPAIR CHART
HTS3551 BD Board Repair block diagram(MT8550)
A
BD function is not working
B
Loading is not DISC
C
All video is not output
D
Ethernet is not starting
BD function is not working
A
Check CN4 cabl e is loose
or bad INT
Check 1.1V 1.2V 1.5V
Yes or No output
Re-insert and fix
the cable
YES
NO
NO
Repair BD pcb between
L1 U1 L2 U2 U4 circuit
Check 3.3V
Yes or No output
YES
NO
Repair BD pcb between
U3 R10 ci rcuit
Check Y301 Crys tal 27MHz
Yes or No output
YES
NO
Repair BD pcb between
Y 301 U100 Ci rcuit
Check U100 U203
U104 and connect part
YES
Ethernet is not starting
D
Check P401 loose
or bad INT
Check P503 between L401
supersession P401
YE S
NO
IN T
Repair P401between L401 U100
and U100
Loading is not DISC
B
Check Y301 crystal
27MHz Freq Yes or NO
supersession 27MHz crystal
NO
YES
OK
Check U203 U104
and connect part
YES
Check BD Loader run
Yes or NO
supersession Loader
NO
Check HA801 to
BD loader Cable Loose
No
OK
Check Open/Close
Working or Not
Check J507J509 J508
Check U9
A nd Its conjoint parts
No
Re-Insert and fix
the cable
YES
Determine Picture Output
OK
Check U100 And
Their Conjoint Parts
No
Check U900 U901 Q802 Q804
OK
to BD Loader Cable loose
or Bad IN T
or Bad IN T
YES
Yes or No
Q805 And Their Conjoint Parts
All video is not output
C
Check J300 P502 is
loose or bad
supersession JACK
Re-insert and fix
the JACK
loose
Bad
Check J300 P502
between U100
OK