T&D19 - Top Cover Interlock Test
If the top cover is open when this test starts, the following messages will alternately display:
COVER IS OPEN ..
PLEASE CLOSE IT
1. Close the top cover, if open. The following message will display:
OPEN COVER
2. Open the top cover. If do not open the cover in approximately 10 seconds, the following message will display:
CLOSE COVER
3. Close the top cover. If you do not close the cover in approximately 10 seconds, an error message will display.
If an error message is displayed, go to “T&D Error Messages and Actions” on page 190.
4. The test completed successfully if the display advances to the next test number.
T&D20 - NLQ Printhead Mode
Use this test to select how the printhead prints in Near Letter Quality (NLQ) mode. The default setting is NLQ 18
WIRE.
Important
This setting should be changed only if instructed by Plant Engineering.
The following message will display:
Y NLQ 18 WIRE N
1. In this mode, the printhead will print NLQ by using 18 wires. This is done by shifting one set of 9 wires (1B to
9B) up relative to the fixed set of wires (1A to 9A) and making one pass per line.
Chapter 2. Diagnostics
185
Summary of Contents for 4247
Page 1: ...4247 Printers Maintenance Information Document Number SA24 4400 05 Part Number 27P8450 IBM ...
Page 241: ...e90apc15 Figure 24 Main Input Power Supply Ground Chapter 3 Circuit Diagrams 241 ...
Page 257: ...Figure 32 Stacker Motor Wiring Chapter 3 Circuit Diagrams 257 ...
Page 261: ...Stacker Cable Wiring Figure 36 Tractor Assembly Cable Wiring Chapter 3 Circuit Diagrams 261 ...