FLOW CHART NO.11
The fluorescent display tube does not light up.
No
Is 3.3V voltage supplied to Pins(6,24) of IC2001?Check the EV+3.3V line and service it if defective.
Yes
No
Is the voltage of approximately -20V supplied to Check the -FL (-20V) line and service it if defective.
Pin(15) of IC2001?
Yes
No
Is there 500kHz oscillation at Pin(26) of IC2001?Check R2002, IC2001 and their periphery, and
service it if defective.
Check D1016, D1017, T1001, and their periphery,
Yesand service it if defective.
Are the filament voltage supplied between No
No
Pins(1, 2) and Pins(29, 30) of the fluorescent
Is -15V voltage supplied to collector of Q1005?
display tube? And the negative voltage applied
Yes
between these pins and GND?
Check PWRCON
Is the "H" signal inputted
Yesline, and service
to base of Q1016?No
Replace the fluorescent display tube.it if defective.
Yes
Check Q1015, Q1016, D1055, and
their periphery, and service it if defective.
FLOW CHART NO.12
The key operation is not functioning.
Are the contact point and the installation state of the NoRe-install the switches (SW2101, SW2104-2108)
key switches (SW2101, SW2104-2108) normal?correctly or replace the poor switch.
Yes
When pressing each switches (SW2101, SW2104- NoCheck the switches (SW2101, SW2104-2108) and
2108), do the voltage of each pin of IC2001 their periphery, and service it if detective.
(shown below) increase?
SW2104, 2106, 2107: IC2001 3PIN
SW2101, 2105, 2108: IC2001 4PIN
Yes
Replace IC2001.
FLOW CHART NO.13
No operation is possible from the remote control unit.
Operation is possible from the DVD, but no
operation is possible from the remote control unit.
No
Is 5V voltage supplied to Pin(3) terminal ofCheck EV+5V line and service it if defective.
the infrared remote control receiver (RM2001)?
Yes
Is the "L" pulse sent out Pin(1) terminal of receiverNoReplace the infrared remote control receiver (RM2001).
(RM2001) when the infrared remote control is activated?Or replace the remote control unit.
Yes
No
Is the "L" pulse supplied to the Pin(22) of CN1001? Check the line between Pin(1) terminal of receiver
(RM2001) and Pin(22) of CN1001, and service it if
Yes
defective.
Replace DVD Main CBA.
1-8-3E592ATS |
ACEC
