Safety Interlocks; Checking The Ram Backup Battery Voltage - CPI Indico 100 Series Service And Installation Manual

2
Installation

2.15.0 SAFETY INTERLOCKS

It is strongly recommended that the following two interlocks be wired to the generator before preparing to
make any exposures:
DOOR INTERLOCK
The room door interlock switch must be wired to TB4-4 and TB4-5 on the room Interface board. This
switch will provide a closed contact when the door is closed.
X-RAY TUBE THERMAL SWITCH
The X-ray tube(s) thermal switch(s) should be connected to the generator for tube thermal protection.
These may be connected either at the stator terminal blocks (section 2.9.4), or at the room interface
board. The connections on the room interface board are TB4-8 and TB4-9 for tube 1, and TB4-6 and TB4-
7 for tube 2.

2.16.0 CHECKING THE RAM BACKUP BATTERY VOLTAGE

It is recommended that the backup battery voltage be checked before continuing. The normal life
expectancy of these batteries is estimated at 5 years.
CONSOLE CPU BOARD (23 X 56 cm consoles):
1. Turn the operator console upside down carefully to protect the front panel. Remove the 6 screws
securing the base to the molded case.
2. Open the Console carefully such that the interconnecting cables are not strained.
3. Locate the battery on the console CPU board, refer to figure 2-12. Measure the battery voltage
with a DVM. The top of the battery is the positive side; ground (TP2 on the board) is the negative
side.
4. The nominal battery voltage should be approximately 3.0V, replace the battery if it is under 2.80V.
5. Before closing the console, refer to section 2.17.0, console CPU board DIP switch settings.
6. Re-assemble the console. DO NOT OVER TIGHTEN THE SCREWS SECURING THE BASE TO
THE MOLDED CONSOLE TOP.
CONSOLE BOARD (31 X 42 cm consoles):
1. Disconnect all connections, including the console ground connection, from the rear of the operator
console.
2. Turn the console upside down carefully to protect the front panel. Remove and temporarily set
aside the jackscrews from the 'D' connectors on the rear of the console. Remove and temporarily
set aside the hardware from the console ground stud.
3. Remove the 8 screws securing the base to the molded case.
4. Gently remove the console bottom (the metal bottom panel with the feet attached).
5. Locate the battery on the console board, refer to figure 2-12. Measure the battery voltage with a
DVM. The top of the battery is the positive side; ground (TP2 on the board) is the negative side.
Page 2-28 Rev. H Indico 100 Series Service Manual
CPI Canada Inc.
Ch # 740895-04