2. DVD Section
FLOW CHART NO.1
The key operation is not functioning.
Are the contact point and the installation state of NoRe-install the key switches (SW2020, SW2021,
the key switches (SW2020, SW2021, SW2022) normal?SW2022) correctly or replace the poor switch.
Yes
When pressing each key switches (SW2020, NoCheck the key switches (SW2020, SW2021,
SW2021, SW2022), do the voltage of each pin SW2022) and their periphery, and service it if
of CL1051 (shown below) change to "H" (3.3V) defective.
from "L" (0V)?
SW2020 ? CL1051 24PIN
SW2021 ? CL1051 26PIN
SW2022 ? CL1051 25PIN
Yes
Replace DVD Main CBA.
FLOW CHART NO.2
No DVD operation is possible from the remote control unit. (Operation is possible from the unit.)
No
Is 5V voltage supplied to Pin(3) terminal of the Check AL+5V line, and service it if defective.
RM2001 (remote control receiver)?
Yes
No
Is the "L" pulse sent out from Pin(1) terminal of the Replace the RM2001 (remote control receiver).
RM2001 (remote control receiver) when the remote Replace remote control unit if needed.
control unit is activated?
Yes
No
Is the "L" pulse signal supplied to Pin(22) of Check the line between the RM2001 (remote
CL1051?control receiver) and Pin(22) of CL1051, and
service it if defective.
Yes
Replace the DVD Main CBA.
FLOW CHART NO.3
The disc tray cannot be opened and closed. (It can be done using the remote control unit.)
No
Does the voltage of Pin(24) on CL1051 become Replace the "OPEN/CLOSE" button (SW2020).
3.3V when pressing "OPEN/CLOSE" button on
the unit?
Yes
Refer to "FLOW CHAR NO.4" <The disc tray
cannot be opened and closed.>
FLOW CHART NO.4
The disc tray cannot be opened and closed. (It can not be done using the unit and the remote control unit.)
Replace the DVD Main CBA.
No
No improvement can be found.Original DVD Main CBA is poor.
Yes
Replace the DVD Mechanism.
1-10-4H9740TS |
ACEC
