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S T A R T
=7
Figure 4-1. Troubleshooting Flow Chart
4 ~ 5
-
NO
7
NO
CHECK A7U12 +5V REGU
-
INDICATOR
LATOR
,
-
AVAILABLE
REPLACE A5 LOCK REFER-
ENCE BOARD
DEPRESS RETUNE SWITCH
CHECK INPUT POWER
POWER ON
PER TABLE 2-3 CHECK
INDICATOR
SAFETY SWITCH, ON A1
CONNECTOR BOARD.
CHECKLASERCURRENT
ADJUSTMENT
THAN APPROX.
CHECKIREPLACE:
1. A1 CONNECTOR BOARD
2. SERIES REGULATOR 0 1
3. A2 H.V. POWER SUPPLY
TURRET I N
RE-POSITION TURRET
REMAIN ON FOR MORE
PERFORM LASER CURRENT
ADJ. AFTER REPLACEMENT.
TROUBLE SHOOT AUTO
-
BETWEEN0.27V
MATlC RETUNE CIRCUIT
PER FIG.43
LOGIC LOW
REPLACE A7 CONTROL
ISOLATE LASER CURRENT
BOARD
AND/OR FUSE
FAULT PER FIG. 4 2
A
CHECK POWER SOURCE
PER TABLE 2-3. CHECK
FUSES ON A 1 CONNECTOR
BOARD.
REPLACE A1 CONNECTOR
BOARD
.
REPLACE A1 CONNECTOR
REPLACE A7 CONTROL
BOARD
BOARD
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