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1. No drive signals supplied at motors
Check drive signals at pins 1 and 2 of K16M for focus
motor, pins 3 and 4 of K16M for zoom motor and pins 1
and 2 of K16L for lens shift motor on Power Board.
Check drive signals at pins 2 and 10 of ICs IC1611,
IC1602 and IC1601.
Check ICs IC1611, IC1602 and IC1601 and peripheral cir-
cuits. Check motor drive power supply (9VA).
2. No drive signals supplied at motor drive ICs.
Check drive signals at pins 5 and 6 of ICs IC1611, IC1602
and IC1601. They are supplied from pins 4 and 5 for focus
drive, pins 6 and 7 for zoom drive and pins 9 and 10 for
lens shift drive of IC1641 D/A control IC.
3. No drive signals output from CPU.
The motor dive signals are supplied from IC801, main
CPU, via the IIC bus control lines.
4. No ke
y switch signals input to CPU.
Check signals at pins 118 to 120 of IC801 when pressing
the key buttons. Check key buttons.
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