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Diagnostics
SM4530-1 – 30APR96 51
Focus Malfunctions
Malfunction Check
No manual focus 1. Check the FOCUS SHAFT SPRING for the
correct tension.
2. Check the LENS SUPPORT SPRING for
correct tension.
3. Check the LENS DRIVE GEAR on the
FOCUS SHAFT ASSEMBLY for damage
and install a new part if necessary.
No remote focus (Non Auto Focus models) 1. Check the REMOTE CORD for damage;
use a REMOTE CORD that has no
damage.
2. Actuate and hold the REMOTE CONTROL.
3. Check that the voltage across the FOCUS
MOTOR is 8.5 V AC. If the voltage is
correct, install a new FOCUS MOTOR.
Check that the secondary voltage on the MAIN
MOTOR is correct.
No remote focus, RACK SOLENOID
ASSEMBLY operates (Auto Focus Models)
1. Check that the REMOTE CORD operates
correctly; use a REMOTE CORD you know
is good (EC 3).
2. Actuate and hold the REMOTE CONTROL.
3. Check that the voltage across the FOCUS
MOTOR is 8.5 V AC. If the voltage is
correct, install a new FOCUS MOTOR.
4. Check the AUTO FOCUS SWITCH
ASSEMBLY for correct operation.
5. Check the secondary voltages on the MAIN
MOTOR.