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(5) Black-colored LEDs in the following figure do not light properly.
A
D
F
B
C
E
G
G
E
C
B
F
D
A
Is the harness between CN401 (A-3) on the
CP-364 and CN2 (A-1 : B side) on the
CP-365 boards properly connected?
OK
Is WR signal of control IC (IC308 (F-2) on
the CP-364 board) proper?
OK
Is output signal (ON : +3 V to +4 V/OFF :
GND) of control ICs (1Q1 to 2Q3 of IC308
on the CP-364 board) proper?
OK
Is power supply (anode : +2 V) to LED proper?
HKDV-900
NG
Connect harness connectors properly and
recheck them
NG
Connection defect between IC200 (G-1) and
IC308 on the CP-364 board
NG
IC308 defect on the CP-364 board
NG
Defect of resistor block (on CP-365 board)
2-3. Troubleshooting
2-17 (E)
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Table of Contents
Troubleshooting
