Table of Contents
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KS (Location)
K9 (Location)
KlO (Location)
Kll (Location)
Kl2 (Location)
6-15
6-15
6-15
6-15
6-5
LBCl (Location)
6-6
LBC2 (Location)
6-6
LCW Format, Start/Stop
1-83
LCW Format, Synchronous
1-82
Left Side
6-3
Light Drivers, SCR
4-7
Light, System-Restart/Power-Check,
Reset
5-3
Lights (See Indicators)
Lines, ICA, Nonoperational
2-48
Load Program Storage (Position of
Diagnostic Control Switch)
1-125
Load Storage (Position of Diagnostic
Control Switch)
1-125
Local Storage
Address Lines and Write Line
4-7
Decodes when Mode Register Bits 5-7
Are 000:
CPU Operations
1-67
Decodes when Mode Register Bits 5-7
Are 001: 2311 Disk Locations
1-68
Decodes when Mode Register Bits 5-7 Are
100:
Address Backup Locations
1-68
Decodes when Mode Register Bits 5-7
Are 101, Communications Channel
1-69
Decodes when Mode Register Bits 5-7
Are 110: 2540 Reader Punch
1-69
Delay Line Adjustment
4-6
Delay Line Settings, Initial
4-6
Diagnostic Aids
1-135
Location Decode
1-67
Zone and External Mode for 2560
1-127
Zone and External Mode for 2560
(Model 20 Mode)
1-127
Zones for System/360 Operation
1-67
Zone 0 (1400 Compatibility)
1-25
Zone 1 (1400 Compatibility)
1-25
Zone 4 (1400 Compatibility)
1-25
Zone 6 (1400 Compatibility)
1-26
Zone 7 (1400 Compatibility)
1-26
Local Storage/Storage Protect Cards
4-7
Local Storage and Storage Protection
Addressing
A-2
Local Storage Card and Storage Protection
Card
A-1
Locations
6-1
Logic Gate A (Card Side)
6-10
Logic Gate A (Pin Side)
6-11
Logic Gates A and B (Open)
(Locations)
6-9
Logout
Channel
2-43
PR-KB
2-12
1052
1-115
1052 and Machine Check Trap (Model 20
Mode)
1-127
Loop, Soft Stop--Single Cycling
2-3
Low Temperature
1-118
Low Temperature (Indicator)
1-123
LS Address Lines and Read Line
4-7
LS Addressing (Pl-Time Access)
(Waveform)
1-135
LS Addressing (P3-Time Relationship
Between X and Read Line) (Waveform) 1-136
LS Bit Output (Pl Access Data is 1, P3
Access Data is 0)
(Waveform)
1-137
LS Bit Output (2 Successive Zeros at Pl
and P3 Time)
(Waveform)
1-136
LS Write Line (PB-Time)
(Waveform)
1-137
Machine Check and Channel Control
Check
1-114
Machine Check Trap and 1052 Logout
1-127
Machine Check Trap and 1052 Logout (Model
20 Mode)
1-127
Machine Check Trap Routine
1-114
Machine Level Control (MLC) and
Engineering Changes (EC's)
1-126
Main Storage
Address Stop
1-124
Array Line Measurements
1-134
Array Measurements
1-133
Components (Card Side) (Locations)
6-7,
6-8
Diagnostic Aids
1-129
Replacement
4-5
Schmoo Procedure
4-3, 4-4
Units (Pin Side)
(Locations)
6-6
Maintenance
Approach (Flowchart)
1-115
Concepts
1-112
Preventive
3-1
Programs
1-125
Maps, Auxiliary Storage
1-6
Marginal Checking
5-2
Mask, File, Set Command, 2311/DAC
1-105
Match, Trap Address
1-2
MCS Table--Utility Program
2-22
Meter Power Pac
6-2
Meter, Use, 1403
2-20
Metering Switch (CE Switch)
2-8
Microprogram Changes, Field
1-126
Mid-Pac (Locations)
6-12
Mid-Pac, Power Supply
5-5
Mnemonics, External
1-43
Mode Switch
1-124
Model 20 Mode Feature
1-127
Module, Auxiliary
1-6
Module O, Auxiliary Storage
1-8
Module O, Auxiliary Storage, (1400
Compatibility)
1-22
Module 1, Auxiliary Storage
1-9
Module 1, Auxiliary Storage, (1400
Compatibility)
1-24
Module 2, Auxiliary Storage
1-9
Module 2, Auxiliary Storage, (1400
Compatibility)
1-24
Module 3, Auxiliary Storage
1-10
Module 4, Auxiliary Storage
1-11
Module 4, Auxiliary Storage, (1400
Compatibility)
1-25
Module 5, Auxiliary Storage
1-12
Module 5, Auxiliary Storage, (1400
Compatibility)
1-25
Module 6, Auxiliary Storage
1-13
Module 6 (8 in 24K Systems--1400
Compatibility) Auxiliary Storage
1-25
Module 7, Auxiliary Storage
1-14
Module 8, Auxiliary Storage
1-14
Module 9, Auxiliary Storage
1-14
Move/Arithmetic (Word Type 3)
1-39
MS Address Stop Procedure During IPL
or CSL
2-3
2025 FEMM (7/69)
X-5
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