- Hewlett-Packard LaserJet Printer Service Manual

Heating Element Resistance Check

Figure 7-3

LEDs Description Recommended Action

Beam Error. There are a number of causes

for this error, and some of the causes may

be transient. (They may disappear.)

1. Power-cycle the printer by unplugging the printer

and plugging it back in.

2. Make certain the Laser/Scanner Assembly is

correctly seated on the printer chassis.

3. Replace the Laser/Scanner cable (J208 on the DC

Controller).

4. Replace the Laser/Scanner Assembly.

5. Replace the DC Controller PCA.

Engine Error. The formatter and engine

are not communicating.

1. Power-cycle the printer by unplugging the printer

and plugging it back in. If this doesn’t clear the error:

2. Reseat Formatter to DC Controller PCA.

3. Replace the Formatter PCA

4. Replace the DC Controller PCA.

Table 7-4 Service and Error Messages (Continued 2 of 3 )

Troubleshooting

Troubleshooting 7-11