Note: If after installing the logic board, the NPS 540+ power light is not lighted, check for + 5 V dc on pin 18
with a volt meter (pin 18 is shown on connector).
Table 51. Model A00 logic board jumper location to 5 V dc on pin 18:
4247 A00 Logic Board Level :
Install jumper between pins:
Level 1 , 2, 3 logic board
2 and 3
Level 4 logic board
1 and 2
4. Run the T&D program in automatic mode.
For Model A00, see “How To Run the Test and Diagnostic (T&D) Programs” on page 161.
For Models 001 and 002, see “How To Run the Test and Diagnostic (T&D) Programs” on page 201.
Ensure that T&D11, T&D12, T&D15, T&D16, and T&D17 are adjusted, if indicated.
5. Use the configuration setup printout to configure the printer. See
IBM 4247 Printer Model A00 User’s Guide.
EMI Filter (Model A00 Early-Level Logic Board Only)
Removal
Attention: The electronic parts of this printer can be damaged by electrostatic discharge (ESD). Ensure that ESD
protection devices and procedures, including a static discharge wrist strap, are used while working on the printer.
1. Power off (O) the printer and disconnect the power cord from the customer outlet.
2. Put the covers in the service position. See “Removing Covers” on page 275.
1 2 3
Logic Board
Parallel Connector
Figure 118. Model A00 Logic Board Jumper Location. (Viewed From Rear)
Chapter 5. Removals and Adjustments
377
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 ...