Philips HTB7250D, Service Manual

Page: 12 / 39

2 - 3 2 - 3
REPAIR INSTRUCTIONS(BD Board)
REPAIR CHART
A
BD Function
No Working
B
Loading
No DISC
C
All Video
No OUTPUT
A
BD function
No working
Check CN4 cable is loose
or bad INT
Check 1.1V 1.5V
Yes or No output
Re-insert and fix
the cable
YES
NO
NO
Repair BD pcb between
L1 U1 L3 U905 circuit
Check 3.3V
Yes or No output
YES
NO
Repair BD pcb between
U901 L2 FB19 circuit
Check Y300 Crystal 27MHz
Yes or No output
YES
NO
Repair BD pcb between
Y300 U100 Circuit
Check U100 U201 U101
U102 and connect part
YES
B
Loading
No Disc
Check Y300 crystal
27MHz Freq Yes or NO
supersession 27MHz crystal
NO
YES
OK
Check U101 U102 U201
and connect part
YES
Check BD Loader run
Yes or NO
supersession Loader
NO
C
Check JK805 is
loose or bad
supersession JACK
Re-insert and fix
the JACK
loose
Bad
Check JK805
between U100
All Video
No OUTPUT
PL
Check J800 to
BD loader Cable Loose
No
OK
Check Open/Close
Working or Not
Check J900 J901
up!CE!Mpbefs!Dbcmf!mpptf
ps!Cbe!JOU
Check U10
And Its conjoint parts
No
ps!Cbe!JOU
Re-Insert and fix
the cable
YES
Zft
Determine Picture Output
OK
Zft!ps!Op
Check U100 And
Their Conjoint Parts
No
Check U10 u408
OK
Boe!Uifjs!Dpokpjou!Qbsut
D
HDMI_RX no output
D
Ethernet No starting
Check P401 loose
or bad INT
Check P401 between U100
supersession P401
YES
NO
INT
Repair P401 between U100
BD Board