Panasonic SA-PT660 Technical Manual page 22

Mech Troubleshooting.
Troubleshooting concept: The fastest way to find out if the circuitry is causing the mech problem is to
check the sensors. When they turn on, they ground out the micro input lines, proving each sensor is OK.
Default
tray 1
position
Fig
11
Default = Tray 1 loaded
Slide # 22
rear
Fig
12
Defect -Trays 2-5 loaded
(shown is tray 3 loaded)
Is it the Mech or the Circuitry?
Defect - All or some trays Out
Isolation
Procedure:
1a. Note the
position of the
tray in the
jammed
mechanism
(pictured left).
1b. Unplug the
ribbon cable
from socket
CN2011.
2. Measure the
voltage at each
of the CN2011
socket pins.
The voltages
should be
identical to the
ones listed on
.
the next page
Fig
13
Outline Models:
Wireless SA-PT660
Mech SA-PT760
Pwr Supply SA-PT960
Protection SA-PT1060
Audio SH-FX67, 85