Figure 6: Service Procedure Flowchart - Akai DVLX44C1 Service Manual

Load Diagnostics Test
Program into UUT
Close PC "Flash Loader"
Unplug UUT from 110 VAC
Wait 10 seconds
Plug UUT into 110 VAC
Normal Response:
DVLX Message on PC
DVLX Message
on PC ?
Press ENTER on PC
Response
on PC ?
UUT Displays
Image ?
Run Diagnostics Test
B
yes Diagnotics
Pass ?
Unplug UUT from 110 VAC
Launch PC "Flash Loader"
Wait 10 seconds
Plug UUT into 110 VAC
Normal Response:
Manufacturer &
1
Product ID to PC
ID Message no
on PC ?
yes
AA
service_manual_i
10 December 2004
Test Procedure
Connect UUT to
test environment
A
Unplug UUT from 110 VAC
Launch PC "Flash Loader"
Wait 10 seconds
Plug UUT into 110 VAC
Normal Response:
Manufacturer &
Product ID on PC
yes ID Message
on PC ?
2
3
no
C
Unplug UUT from 110 VAC
yes
Replace Video Board &
no
C1
4
yes
no
yes
CC
5
no
Unplug UUT from 110 VAC
Replace Failed Subsystem
6
A
6th attempt no
B
for ID Message ?
yes
A

Figure 6: Service Procedure Flowchart

DVLX Confidential
Rear Projection TV Service Manual
1
no 6th attempt
for ID Message ?
yes
C
Unplug UUT from 110 VAC
Open Electronics Box
Plug UUT into 110 VAC
Check Video Board 12 v
C1
yes Video Board
has 12v ?
Unplug UUT from 110 VAC
Disconnect Cable Between
Audio Board
9
Plug UUT into 110 VAC
yes
Unplug UUT from 110 VAC
Replace Cable Between
Video Board & PS
A
no
A
7
8
no
Video Board & PS
10
Check PS voltages
11
Power Supply no
Voltages OK ?
Unplug UUT from 110 VAC
Replace Power Supply
13
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