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Note: When the non-metal washer is not installed, the frame ground is connected to the dc ground. The
default is washer installed.
3.
The NPS 540+ can be used without an external power supply only if +5 V dc is enabled (supplied) on pin 18
of the printer parallel attachment connector. NPS devices (p/n 30H4082, 30H4083, 30H4055) cannot be
powered by pin 18 and always require an ex12 V ac power supply. There is no danger of damaging
any NPS or other computer devices when +5 V dc is enabled on pin 18.
The new logic board you will receive will have a 2 pin jumper installed on either a 2 pin or a 3 pin connector
located near the parallel attachment connector.
To attach the NPS Ethernet 540+ (p/n 30H4054) to the 4247 printer without an external power supply:
a. Find the 2 pin jumper and connector.
b. If a 2 pin jumper is installed on a 2 pin connector then + 5 V dc is enabled to pin 18.
c.
If a 2 pin jumper is installed on a 3 pin connector, as shown in Figure 4-18, use the chart below and verify
the jumper is installed to 5 V dc on pin 18. If the jumper is not installed correctly, move it to the
pins shown in the chart.
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).
1 2 3
Logic Board
Parallel Connector
Figure 123. Model 001/002 Logic Board Jumper Location. (Viewed From Rear)
Chapter 5. Removals and Adjustments
384
Содержание 4247
Страница 1: ...4247 Printers Maintenance Information Document Number SA24 4400 05 Part Number 27P8450 IBM ...
Страница 241: ...e90apc15 Figure 24 Main Input Power Supply Ground Chapter 3 Circuit Diagrams 241 ...
Страница 257: ...Figure 32 Stacker Motor Wiring Chapter 3 Circuit Diagrams 257 ...
Страница 261: ...Stacker Cable Wiring Figure 36 Tractor Assembly Cable Wiring Chapter 3 Circuit Diagrams 261 ...
Страница 266: ...Locations and Orientations Logic Board Microcode Module Locations and Orientation Model A00 Chapter 4 Locations 266 ...
Страница 348: ...7 Remove the side cover screws and side covers Figure 96 Top Cover Chapter 5 Removals and Adjustments 348 ...
Страница 498: ...Table 75 Store Mode Quit Save Current Manufacturing Default Appendix A Printer Configuration 498 ...
Страница 501: ...E90AX003 Figure 196 Coax Configuration Printout Part 1 of 2 Appendix A Printer Configuration 501 ...