IBM 5256-1 Maintenance Information Manual page 9

THEORY ••••••••.•••••••••.••••••••••••• 4-1
INTRODUCTION . . . . . . . . . . . . . . . . ' . . . . . . . . . .4-1
Printer Operation Overview and Data Flow . . . . . . . . . . . . .4-2
System Configuration
Cable Adapter. . . . . . . . .
Frame Concept . . . . . . . .
Transmission Sequences .. .
Commands. . . . . . ~ . . . .
Poll Response Frames ..
Read Status Response Frame . . . . . .
Printer SCS Formatting Control Characters . . . . . .
Set Graphic Error Action Summary . . • . . . . .
Set Horizontal Format Summary ..
Set Vertical Format Summary . . . .
Interface . . . . . . . . . . . .
Poll for Status. . . . . . . . .
Write Data . . .
Data Transfer .
Microprocessing Unit . . .
Read/Write Storage. .
Internal Processing Queues ..
Control Panel and CE Lights . . . . .
Sense Latches. . . . . . . . . . . . . . . . .
Print Emitter Control and Print Timings . . . .
Power and Signal Distribution . . . . . .
Power On and Power Off Timings . . . .
Print Timings . . . . . . . . .
Printer to Adapter Interface.
Functional Parts ..
Motors .. .
Print Head .. .
Carrier· . . . . . . . . . . . . . • . . . . . . .
Print Emiiter and Print Emitter Pickup .. .
Ribbon Drive . . . . . .. . . . . . . .
Forms Feed . . . . . . . .
.4-5
.4-6
.4-6
.4-7
.4-8
· . .4-9
· .4-10
· .4-11
· .4-12
· .4-12
· .4-13
· .4-13·
· .4-13
· .4-13
• .4-14
· .4-15
· .4-15
· .4-15
· .4-17
· .4-17
· .4-18
· .4-20
· .4-20
. . . . 4-19
· .
4~22
· .4-23
· .4-23
· .4-25
· .4-33
· .4-34
• .4-36
· .4-37
Forms Tractor Unit . . . . . . . . . . . . . . . . . . . . 4-41
FEATURES .•••.•••••.••••••..•••.•••..•.• 5-1
Cable Thru. . . .5-1
Audible Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
APPENDIXA. SETTING UP THE IBM 5256 PRINTER .••. A-1
SECTION 1. Standalone Checkout. . . . . . . . . . . . . . . . . A-2
CABLE THRU FEATURE . . . . . . . . . . . . . . . . . . . . . . A-7
SECTION 2. CONNECTING TO THE SYSTEM. . A-8
PROBLEM CHECK LIST . . . . . . . . . . . . . . . . . . . . . . A-11
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