![](/images/new-backgrounds/1299931/29993153x1.webp)
4. MAINTENANCE & TROUBLESHOOTING
WARNING
ELECTRICAL SHOCK HAZARD
Do not open the equipment unless totally familiar with electrical circuits and service manual.
Only qualified personnel should work inside the equipment.
4.1 Maintenance
4.1.1 Cleaning
Dust or dirt on the equipment may be removed with a soft, dry cloth. Do not use commer- cial or chemical cleaners to clean the unit; they can remove paint and markings.
4.1.2 Resetting the circuit breaker
The BREAKER button on the rear panel pops out when the voltage input to the equipment exceeds the voltage rating. In this case, reset the power and press the button to restore normal operation.
4.2 Self Test at Terminal Unit
1.At the standby display, press [F4], [6], [5] and [Enter] to display program nos. of de- vices. If the
[Self test] |
|
|
<<Program No.>> |
|
|
CPU1 (Tx) | (Rx) | |
CPU2 (SYS CPU) | (I/O) | |
ANTENNA |
| |
VOICE CODEC |
| |
HSD MODEM (CPU) | (DEMOD) |
(DECODE)
Start Selftest OK? (Y/N) Y
** Program No.
Figure 11 Program no. display
2. Press [Y] and [Enter] to test.
17