1-11-4
E3B90TR
2 HDD/DVD Section
Yes
No
FLOW CHART NO.1
The key operation is not functioning.
Are the contact point and the installation state of
the key switches normal?
Is the control voltage normally inputted into
Pin(82, 83) of IC1501?
Check the key switches and their periphery, and
service it if defective.
No
Re-install the key switches correctly or replace
the poor switch.
FLOW CHART NO.2
No HDD/DVD operation is possible from the remote control unit. (Operation is possible from the unit.)
Replace the RS1501 (remote control receiver).
Replace remote control unit if needed.
Check the line between the RS1501 (remote
control receiver) and Pin(3) of IC1501, and
service it if defective.
Is the "L" pulse sent out from Pin(1) terminal of the
RS1501 (remote control receiver) when the remote
control unit is activated?
Is the "L" pulse signal supplied to Pin(3) of
IC1501?
Replace IC1501 or DVD MECHANISM & DVD
MAIN BOARD ASSEMBLY.
Yes
Yes
Replace IC1501 or DVD MECHANISM & DVD
MAIN BOARD ASSEMBLY.
Yes
Is 5V voltage supplied to Pin(3) terminal of the
RS1501 (remote control receiver)?
Yes
No
Check AL+5V line, and service it if defective.
No
No
0.20
0.60
1.10
1.70
2.45
3.25
4.30
-----
-----
POWER
HDD>DVD
VCR>DVD
CH
DOWN
CH UP
Terminal voltage of IC1501-82,83
KEY-1
IC1501-82
VCR
HDD
DVD
OPEN/
CLOSE
HDD/DVD
STOP
HDD/DVD
PLAY
HDD/DVD
REC
KEY-2
IC1501-83
(V)
FLOW CHART NO.3
Replace the DVD MECHANISM & DVD MAIN
BOARD ASSEMBLY.
The [No Disc] indication.
Both picture and sound do not operate normally.
