HP 3000 III Series Manual page 375

System Installation
1. Press and release the EMERGENCY OFF pushbutton and check for
thre e re s ul ts :
(I) The pushbutton lamp goes out.
(2) All fans in the card cages, cabinets, and other devices
stop.
(3) All circuit breaker handles on the PCM and, if present,
all PCU's, move to the OFF (down) position.
m. Set the circuit breaker in the Computer Mainframe Power Panel
to OFF. Set the circuit breaker in the Computer Peripheral
Equipment Power Panel to OFF.
n. If step 1 is completed successfully, continue this procedure.
Otherwise, go no further until the fault is corrected.
o. Continue installation by connecting the interrupt poll, data
poll, MCU clock signal distribution, and flat cables as des-
cribed in paragraphs 11-5 through 11-6. Then, continue by
ret ur n in g to s te p p.
p.' Do not turn ON the Computer Mainframe Power Panel or the Com-
puter Peripheral Equipment Power Panel ac power until in-
structed to do so in paragraph 11-8.
q. Leave all equipment bay rear doors off.
11-5. Bus Cable Connections
If the system was shipped with the equipment bays separated,
three flat cables for the lOP bus, Multiplexer Channel bus, and
Power Bus must be connected between the equipment bays. Step-by-
step instructions for installing the bus cables are contained in
the HP 3000 Computer E¥stem Installation Manual, part no. 30000-
90081.
11-6. Interrupt Poll, Data Poll, and MCU Clock Connections
If the system was shipped with the equiment bays separated, the
interrupt poll cable (one white and one blue twisted-pair cable),
Multiplexer Channel data poll cable (one white and one orange
twisted-pair cable), and MCU clock cable (gray coaxial cable)
must be connected between the equipment bays. Step-by-step in-
structions including cabling diagrams for installing these cables
are contained in the HP 3000 Computer System Installation Manual,
part no. 30000-90081.
ll-Q