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2SC1815
2SB743
for
DRIVE PWB
7406
2SD986
74LS14
8253
for
CPU board
74LS125
Z-80A
CIRCUIT CONNECTED
WITH.
CR STEP MOTOR DRIVE
Check CR step
motor.
-10
-
Check latch circuit.
Check +26V power circuit.
Check 025, 27, 041.
~------------------~
Check connecting line and
latch circuit
Check 015, 16, 17, 18
IC3
IC4, 03
R10, 14, 15
Check
IC15,
19, 5, 17,
R17, C10.
Check select circuit (1)
Check IC23
2SC1815
2SB743
S52778
2SD986
7406
2SC1815
74LS14
74LS04
74LS08
74LS10
74LS74
8253
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