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REPAIR INSTRUCTIONS-part two
A
BD function is not working
YES
Check CN4 cabl e is loose
or bad INT
NO
NO
Check 1.1V 1.2V 1.5V
Yes or No output
YES
NO
Check 3.3V
Yes or No output
YES
NO
Check Y301 Crys tal 27MHz
Yes or No output
YES
Check U100 U203
U104 and connect part
2 - 4
HTS3551 BD Board Repair block diagram(MT8550)
MAIN UNIT REPAIR CHART
A
BD function is not working
Loading is not DISC
B
Loading is not DISC
NO
Check Y301 crystal
Re-insert and fix
the cable
27MHz Freq Yes or NO
YES
Repair BD pcb between
L1 U1 L2 U2 U4 circuit
No
Check Open/Close
Working or Not
Repair BD pcb between
OK
U3 R10 ci rcuit
Check HA801 to
YES
BD loader Cable Loose
or Bad IN T
OK
Repair BD pcb between
Y 301 U100 Ci rcuit
NO
Check BD Loader run
Yes or NO
YES
Check U203 U104
and connect part
OK
No
Determine Picture Output
Yes or No
OK
Check U900 U901 Q802 Q804
Q805 And Their Conjoint Parts
B
C
All video is not output
C
All video is not output
loose
Check J300 P502 is
supersession 27MHz crystal
loose or bad
Check U9
Bad
And Its conjoint parts
supersession JACK
No
Check J507J509 J508
OK
to BD Loader Cable loose
or Bad IN T
YES
Check J300 P502
between U100
Re-Insert and fix
the cable
supersession Loader
Check U100 And
Their Conjoint Parts
2 - 4
D
Ethernet is not starting
D
Ethernet is not starting
YE S
Check P401 loose
Re-insert and fix
the JACK
or bad INT
NO
IN T
Check P503 between L401
and U100
supersession P401
Repair P401between L401 U100
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