Service Manual
6-11
Troubleshooting
6
3.
Inspect the idler rollers on the inside of the top-front cabinet panel; they
should rotate freely.
4.
Check that the exit roller rotates smoothly and that the front cover is fully
closed and seated.
5.
Check the paper eject path for obstructions.
Checking the paper-feed motor and drive train
1.
Determine if the paper-feed motor runs. If it does not rotate, go to Step 2. If
it does rotate, go to Step 5.
2.
Ensure that the top and front cover safety interlock switches are closed and
operating correctly. Refer to the earlier topic “+24 VDC safety interlocks” on
page 6-6.
3.
Measure to determine if +25.5 VDC is being supplied to the motor. If it is, go
to Step 3. If it is not, inspect the paper-feed motor's wiring harness. If the
harness is good, then troubleshoot the power supply. Refer back to the topic
“Verifying power supply operation” on page 6-3.
4.
Disconnect the motor's wiring harness. Measure the resistance of the motor's
windings. The expected resistances are listed in Table 6-1. “Motor and
solenoid resistances,” on page 6-8. If the windings are opened, shorted or far
out of tolerance, replace the motor.
5.
If the motor windings resistance are within specification, then inspect the
wiring harness for nicks, crimps, opens or other problems. If the harness
checks out, then replace the engine control board.
6.
Remove the paper-feed module. Inspect the gear train on the inside of the
printer frame; look for stripped gears or broken teeth.
Содержание DECcolorwriter 1000
Страница 11: ...Service Manual xi...
Страница 16: ...Service Manual xv...
Страница 56: ...2 24 DECcolorwriter 1000 2 Installing the Printer and Drivers...
Страница 64: ...3 8 DECcolorwriter 1000 3 Verifying the Printer and Host Connections...
Страница 70: ...4 6 DECcolorwriter 1000 4 Key Operator Training...
Страница 170: ...8 46 DECcolorwriter 1000 8 FRU Disassembly Assembly...
Страница 190: ...9 20 DECcolorwriter 1000 9 Checks and Adjustments...
Страница 193: ...Service Manual A 3 Field Replaceable Units List A Figure A 1 The printer exterior FRUs 8699 76A 1 2 3 4 5 6 7 8 9...
Страница 195: ...Service Manual A 5 Field Replaceable Units List A...
Страница 198: ...A 8 DECcolorwriter 1000 A Field Replaceable Units List...
Страница 204: ...C 6 DECcolorwriter 1000 C Wiring Diagrams...
Страница 208: ...D 4 DECcolorwriter 1000 D Test Pattern Generator...