Sony PCS-1500 Service Manual page 172

4-2. Self-diagnostics Function
Start up the system using "diag"
mode, and type #diag[|]sircs↓
Input from the
PCS-1500/1500P
Input from camera
There is no problem
4-42
RC-1
NO
YES
changes at IC781 [11]
when the system receives
the remote control
IC780 and its peripheral
NO
PASSED?
YES
changes at IC781 [1] when
the system receives the
IC780 and its peripheral
Signal level
NO
signal
YES RX-47, CN790 or their peripheral
Signal level
NO
remote control
signal
IC700, its peripheral, or
YES
camera is abnormal
PCS-1500/1500P