HP CM8060 Color MFP Kundendienst Handbuch Seite 1462

C1.06C1: Drum Illumination 1 LED (LED8) not lit
Initial Steps
1. „Drum component locator" auf Seite 2358
Test the Drum Illumination 1 LED (LED8)
1. Activate LED8.
2. Verify that LED8 turns on and off.
TIPP: Click Subsystems, and then click Drum.
Does the LED turn on and off?
No Yes
Check for problems that might cause intermittent behavior
1. Check the wire harness between the Motion PCA (A2) and the LED.
„Drum wiring diagram" auf Seite 2265
1 2. Check the LED mounting and surrounding area for any obvious problems. Repair as needed.
Check the Drum Illumination 1 LED (LED8) and wire harness
1. Verify that the LED is correctly located.
„Drum wiring diagram" auf Seite 2265
2. Check the wire harness between the Motion PCA (A2) and the LED.
Test the Drum Illumination 1 LED (LED8)
1. Activate LED8.
2. Verify that LED8 turns on and off.
TIPP: Click Subsystems, and then click Drum.
Does the LED turn on and off?
No Yes
„Final activities" auf Seite 24
1
Test the voltage to the Drum Illumination 1 LED (LED8) on the Motion PCA (A2)
1. Disconnect J8 from A2.
2. Test the voltage to LED8 on A2: 0 Vdc unblocked, -2.96 Vdc blocked on J8 at pins 17A to 18A.
„Motion PCA (A2) diagram" auf Seite 2308
Is the voltage correct?
No Yes
1396 Kapitel 8 Hardware fault trees DEWW