Initial Microprogram Program Load (Lmpl); Impl Error Recovery - IBM System/370 145 Operating Procedures Manual

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INITIAL MICROPROGRAM PROGRAM LOAD (lMPL)
1. Ensure that forms are inserted in the PR-KB and the
IMPL disk is mounted in the console file.
2. Set all rotary switches to their normal operating posi-
tions. Ensure that the ADDRESS COMPARE CONTROL
toggle switch is in the SYNC/NORM position.
3. If power is not on, press the POWER-ON key. An auto-
matic IMPL occurs. If power is on, press the START
CONSOLE FILE key.
• The I MPL R EQD and CF PWR ON indicators are turned
on and the START CONSOLE FILE key turns red.
• When the console file starts reading, the START CON-
SOLE FI LE key turns white.
• The message, GO-NO-GO COMPLETE, is printed on the
PR-KB.
• When control storage is loaded, power is removed from
the console file and the CF PWR ON indicator and the
START CONSOLE FI LE key are turned off.
• The system reset routine is executed, the IMPL REOD
indicator is turned off, and the CPU is in a soft-stop state
(MANUAL indicator is on).
• The IMPL operation takes approximately one minute.
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IMPL ERROR RECOVERY
Switches Set Properly?
IMPL Disk Mounted?
Attempt to re-IMPL using the START CONSOLE FI LE key.
If unsuccessful, press the POWER-OFF key and re-IMPL
using the POWER-ON key. If the error continues, notify
your service representative.
INDICATOR
START
IMPL
CF ERROR CONDITION
CONSOLE
REaD
PWR
FILE KEY ON
RED ON ON Disk mounted improperly or not turning
RED
ON
ON
Error during loading of control storage
OFF ON OFF
Control storage loaded. Error in execution
of system reset.
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COMMENTS
A system check or a CF check indicator
is on.
The DIAGN STOP indicator is on.