Removing the High Voltage Contact Assembly and

 

Feed Guide Assembly . . . . . . . . . . . . . . . .

6-67

Replacing the High Voltage Contact

 

Assembly/Feed Guide Assembly . . . . . . . . . .

6-68

Interconnect PCA Removal . . . . . . . . . . . . . . .

6-69

7 Troubleshooting

LaserJet 5 Error Map . . . . . . . . . . . . . . . . . . . . 7-A

Pre-Troubleshooting Procedures . . . . . . . . . . . .

.

7-1

Preliminary Operating Checks . . . . . . . . . . . .

.

7-1

Printer Message Troubleshooting

. . . . . . . . . .

.

7-2

Printer Message Summary Table . . . . . . . . . .

. 7-2

Clearable Warnings

. . . . . . . . . . . . . . . . .

7-10

Printer Message Troubleshooting Procedures . . . . . .

7-12

Blank Display . . . . . . . . . . . . . . . . . . . . .

7-12

MP/PC/LC (Tray 1/2/3) LOAD Message

. . . . . .

7-13

Cassette Size Switches (SW603, SW604, SW605)

 

 

 

Functional Check . . . . . . . . . . . . . . . . . .

7-15

Paper Size Sensing Lower Cassette . . . . . . . . .

7-16

PC Empty Sensor (PS2) Functional Check . . . . . .

7-17

PS4 Check (MP Tray Empty Sensor) . . . . . . . . .

7-17

12 Printer Open Message . . . . . . . . . . . . . . .

7-18

SW601 Functional Check . . . . . . . . . . . . . . .

7-19

13

PAPER JAM Message . . . . . . . . . . . . . . .

7-20

PS1 (Input/Registration Sensor) Check . . . . . . . .

7-22

PS3 (Exit Sensor) Check . . . . . . . . . . . . . . . .

7-23

Pickup Motor Functional Test (M2) . . . . . . . . . .

7-23

Lower Cassette Functional Check . . . . . . . . . .

7-24

14

NO EP CART Message . . . . . . . . . . . . . . .

7-25

16

Toner Low Message . . . . . . . . . . . . . . . .

7-25

41.X ERROR Message . . . . . . . . . . . . . . . .

7-27

50

SERVICE Error - Fuser Malfunction . . . . . . .

7-29

51

ERROR Message . . . . . . . . . . . . . . . . . .

7-31

52

ERROR Scanner Malfunction . . . . . . . . . . .

7-32

Laser/Scanner Assembly Functional Checks . . . . .

7-32

57

(or 57.1) SERVICE Message (Main Motor

 

 

 

Failure) . . . . . . . . . . . . . . . . . . . . . . .

7-33

Main Motor Functional Checks . . . . . . . . . . . .

7-33

58

(or 57.2) SERVICE (Fan Failure) . . . . . . . . .

7-34

Image Defect Summary . . . . . . . . . . . . . . . . .

7-35

PS5 Check (MP Tray Paper End Sensor)

 

 

 

 

Functional Test . . . . . . . . . . . . . . . . . . .

7-44

Image Formation Troubleshooting . . . . . . . . . . . .

7-49

Half Self-Test Functional Check . . . . . . . . . . .

7-49

Contents-6