Toshiba 1550 Service Handbook page 60

3 Lens and mirror errors
Q1: Are the lens and mirror completely inoperable without any out-of-step noise being heard?
NO
Remove the glass and lens cover.
Press "0" and "4" keys to select
MTR), move the lens motor and mirror motor to check that they operate smoothly.
Should it stop halfway as if caught and an out-of-step noise be heard, check the mecha-
nism.
The out-of-step noise is heard but there is no movement.
Rotate the motor gears by hand to move the mirror or lens slightly, and carry out the
operation test again.
If the out-of step noise is heard again but there is no movement.
Oct. 1995 © TOSHIBA CORP.
YES
Check if J11 is correctly connected.
Check if J81, J80 and J83 are correctly connected.
TEST MODE CH
LNS-MTR Check for disconnection or short-circuiting around pins 18 through
22 of J11 and J82.
MMR-MTR Check for disconnection or short-circuiting around pins 1 through
5 of J11 and J81, and J79.
. Using TEST CODE 21 (LNS-MTR), 22 (MRR-
4 - 3 1550 TROUBLESHOOTING