TroubleshootingCLV-180
2-13
ISSUE1
2-13 Panel Malfunction
@ No change in LED when switch is pushed, or LED display not lit.
@ The whole Front Panel blinks not accepting buttons.
2-13-1 Block diagram
2-13-2 Estimated location of failure
No
Estimated location failure Inspection Method
1
HARNESS
1
Verify connection of Harness.
Main Board (J12) -> Front Panel
LED not completely lit when POWER is switched ON. 2
FRONT PANEL
HARNESS
1
No LED lit : Replace Harness
Some LED lit : Replace Front Panel
3
MAIN BOARD
FRONT PANEL
1
Confirm that the Pin corresponding to Main Board J12 change to H
when button is pushed.
*H: approx. DC +5 V
Tester
J12
Pin 5 ：AIR
Pin 6 ：MODE
Pin 7 ：AUTO/MANUAL
Pin 8 ：BRIGHTNESS UP
Pin 9 ：BRIGHTNESS DOWN
Pin 10：LEVEL
Pin 11：TRANSILLUMINATION
Pin 12：LUMP
Pin 13：COUNTER RESET
Pin 14：HIGH
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