IBM 2025 Maintenance Manual page 266

Processing unit
Table of Contents

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External
Branch Conditions
1-118
Decodes, Mnemonics, and
Addressing
1-43
Facilities, Channel
2-46
Facilities, 1052
2-14
Facilities, 1403
2-20
Facilities, 2540
2-33
Field Definitions
1-44
Interruption
2-49, 4-14
Mnemonics and Addressing
1-65
Fan Unit, Hammer Driver (Location)
6-14
Fans, Gate A, Gate B (Location)
6-9
Fans, Main Storage (Location)
6-8
Feature
Model 20 Mode
1-127
Storage Protection
1-19
1401/1460 and 1440 Compatibility 1-20,
1-126
Feed Cells, 2560
4-13
File
Commands
1-104
Indicator
1-123
Mask, Set Command, 2311/DAC
1-105
Table Address, Storage Bias Constant
Values, (1400 Compatibility)
1-29
Filter, Air (Location)
6-4, 6-5, 6-7, 6-13
Forms Check (1403)
2-18
Four-Point Strobe Schmoo Procedure
4-4
Fuses, Hammer Driver Coil
2-17
Fuses, Lower Left Side (Location)
6-5
GA and GB External Facilities, Display
2-46
GA- and GB-Register Definitions
2-46
Gate A (Location)
6-9
Gate B (Location)
6-9
Graphics, AN and HN for Basic 1403
Attachment
1-88
Graphics, PR-KB
1-31
Ground Bus (Location)
6-5
Hammer Check
2-17
Hammer Driver
Board, OlH-Al (Location)
6-14
Coil-Fuses
2-17
Fan Unit (Location)
6-14
Gate (Al) (Location)
6-12
Gate (Open)
6-16
Handload Routine for Channel
2-47
Handload Routine for 2560
2-49, 2-50
HDTBl (Location)
6-14
Head Conditioning Singleshot (DAC)
4-9
Heater Adjustment, Storage Array
4-1
Heaters (Location)
6-12
Heating, BSM
4-1
Hexadecimal/Punched Card Translate
Table
1-70
Home Address
Equal, Search Command, Operation Codes,
2311/DAC
1-109
Read, Command Codes, 2311/DAC
1-106
Write, Command Code, 2311/DAC
1-108
Home Gate Singleshot (1403)
4-12
ICA
A-Clock Singleshot
4-13
X-4
(7 /69)
Jumper Options
2-48
Lines, Nonoperational
2-48
System Reset Singleshots
4-13
Timeout Clock Singleshot
4-13
UCW Format
1-81
ID, Search Command Codes, 2311/DAC
1-109
ID, 2311/DAC Identifier
1-109
Identifier (ID), 2311/DAC
1-109
Independent Carriage Operationb
1-89
Index and Delta Index Singleshots
(DAC)
4-9
Indicators
CPU
1-122
CPU Checks
1-123
Operator's Control Panel (OCP)
1-124
Pluggable
1-124
System Checks
1-123
Inhibit Drive Terminating Resistors
(Location)
6-7
Inhibit Drive Terminating Resistors,
Scoping
1-132
Input Code from Keyboard (PR-KB)
1-30
Inquiry Program, Console
2-2
Integrated Communications Adapter
(Figures)
1-80
Integrated Communications Attachment (See
ICA, Communications Attachment)
Integrated File Commands
1-104
Interface
Control Check
1-115
Control Check Logout
2-44
Hardware
2-46
Intermittent I/O Failures
2-2
Intermittent Malfunction
1-113
Interruption Codes, Program
1-76
Interruption, External
2-49
Interval Timer
4-14
Intervention Required, PR-KB
2-13
Intervention Required, 1403
2-18
I/O Control Connectors
6-3
I/O Device Addresses, Standard
2-6
I/O Exerciser Routine with Variable
Delay
2-2
I/O Units, Channel Controlled, Power
On/Off
5-3
IPL, Read, Command Code, 2311/DAC
1-105
Jam Removal (2540)
2-33
Jumper Options (ICA)
2-48
Jl-J8 and J24, I/O Control
Connectors
6-3
Jl7, AC to 1403
6-3
Jl8, AC to 2311
6-3
Jl9, AC and DC to 2540
6-3
J20 (AC) and J21 (DC) to 2560
6-3
Keyboard to EBCDIC Translate Table
{PR-KB)
1-33
Keys
Control Address Set
1-124
Control Storage Load
1-124
Enable Control Storage Store
Printer-Keyboard Alter/Display
PSW Restart
1-124
Kl {Location)
6-5
K4 (Location)
6-5, 6-15
KS {Location)
6-15
1-124
1-124

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