BD-HP22SB
4 – 1
BDHP22SB
Service Manual
CHAPTER 4.
TROUBLESHOOTING TABLE
[1] TROUBLESHOOTING TABLE
1. MAIN UNIT
The main PWB circuit doesn't function when the power is turned ON.
The power does not become ON.
Is the level of pin (6) of SC9101 at Low?
The power becomes OFF.
Check the POWER pwb.
Check the
IC9001, 9002, 9003, 9004, 9005
and their peripheral circuits.
YES
NO
NO
NO
Is the fan turning on when the power
is turned ON?
Check the fan, fan power and their
peripheral circuits.
YES
YES
NO
YES
YES
FLOW CHART No.1
NO
Are AT_9V, AT_5V, SUB_PC-8V,
SUB_PC_5V supplied to SC9101?
Check the power PWB.
YES
NO
Is 1.05V supplied to TL9019 and TL9016,
3.3V to TL9017, 1.8V to TL9018 and
TL9020 respectively?
Check the IC9001, 9002, 9003, 9004, 9005
and their peripheral circuits.
YES
NO
Is the level of pin (14) of CN5601 at High?
Check R5626 and the analog PWB.
YES
NO
Is 27MHz detected at R7326?
Check X7201 and its peripheral circuits.
YES
NO
Does pin (1) of CN7203 turn to High and
Low on start-up?
Check IC7802, IC7803, IC7804, IC7805,
IC8502, IC8505 and their peripheral
circuits.
Check IC7201 and its peripheral circuits.
The drive doesn't function normally.
Are 12V and 5V supplied to the drive?
Check the power PWB, BD_12V, BD_5V and their peripheral
circuits.
NO
YES
Is the SATA cable connected CN8102 and drive certainly?
Check the connection of CN8102 and drive.
NO
YES
Pin 2, 3, 5, 6 of CN8102 occasionally turn to low.
Check the peripheral circuits of CN7201.
NO
YES
Check the drive.
FLOW CHART No.2
Summary of Contents for BD-HP22SB
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