FUNAI BH2-M200 Service Manual page 25

2 BD/HDD Section
FLOW CHART NO.1
The key operation is not functioning.
Are the contact point and the installation state
of the key switches (SW3701-SW3707) normal?
When pressing each switches (SW3701-SW3707),
do the voltage of Pin(46, 47, 48, 55) of IC2701
decrease?
Replace IC2701.
FLOW CHART NO.2
No operation is possible from the remote control unit.(Operation is possible from the unit.)
Is approximately +5V voltage supplied to Pin(2) of
RS3701 (remote control receiver) ?
Is the "L" pulse sent out Pin(1) of RS3701 (remote control
receiver) when the remote control unit is activated?
Is the "L" pulse inputted to the Pin(41) of IC2701?
Replace IC2701.
FLOW CHART NO.3
The disc tray cannot be opened and closed.
Is the normal control voltage inputted to Pin(47) of
IC2701? Refer to "FLOW CHART NO.1" <The key
operation is not functioning.>
Replace the BD Mechanism Assembly or BD/HDD
Main CBA Unit.
FLOW CHART NO.4
There is [No Disc] indication.
Both picture and sound do not operate normally.
Replace the BD Mechanism Assembly or BD/HDD
Main CBA Unit.
Yes
Yes
Yes
Yes
Yes
Yes
No
Re-install the switches (SW3701-SW3707) correctly or
replace the poor switch.
No
Check the switches (SW3701-SW3707) and their
periphery, and service it if detective.
No
Check LCD+5V line and service it if defective.
Replace the RS3701 (remote control receiver) or remote
No
control unit.
No
Check the line between the RS3701 (remote control
receiver) and the Pin(41) of IC2701, and service it if
detective.
No
Replace the "OPEN/CLOSE" switch (SW3707).
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