IBM System/370 145 Operating Procedures Manual page 44

POWEA-ON PROCEDURES
Integrated Storage Control (lSC) Feature Installed
• This procedure has the two-channel-switch special feature
included .
• I/O INTERFACE Band MUL TITAG switches are non-
functional on a single channel ISC application.
1
Press the POWER-ON key.
Pressing the POWER-ON key initiates a power-on sequence
for the CPU and on-line units. The key turns red when
pressed and turns white when the power-on sequence is complete.
The time required for a power-on sequence is determined
by the number and type of I/O units on-line. The contents of
storage is not valid after a power-on sequence. Also, an IMPL
operation is required. (The IMPL is automatic if the rotary
switches are in their normal processing positions, the ADDRESS
COMPARE CONTROL switch is set to SYNC/NORM, and the
*370 microprogram disk is mounted on the console file.)
2
Wait for the IMPL REaD indicator to turn off.
~ ~
[!]
OFF OFF
3
Move the I/O INTERFACE A and B switches to the
ON position. When the I/O INTFS DSBLD indicator
turns off the ISC is available to the program.
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Operating Procedures 43