67.2, 67.3 Error Message

HP Color LaserJet 8500 and 8550 Series Printers - Control Panel Displays 67.2, 67.3 Error Message  These errors remain under investigation. The service manual lists this as a DC Controller malfunction, which may not be entirely correct. Before replacing any parts, remove the back cover of the printer and verify that the connecter on the back of the DC controller is seated correctly. This connector links the DC controller to the HV converter 2 PCA. Also check the connector on the DC Controller that the formatter slides into for bent pins and a solid connection. If, after checking these connections, the issue remains, try replacing the laser scanner first. It may be possible to hear the printer stop its start-up sequence when the 67.2 or 67.3 error appears on the control panel. The laser scanner turns on before any of the carousel motion tests take place. If replacing the laser scanner does not resolve the issue, then replace the following three parts together:

High Voltage Converter 2 PCA

Formatter

DC Controller

If these three parts are replaced, the printer will need to be put into SERVICE MODE and all the values put back into the printer's memory. Ask the customer if he or she has a recent Configuration page to be used as a reference when resetting the values.

NOTE: If the printer is experiencing 67.3 errors, then see BPL90247, it specifically addresses 67.3 errors.

See the following sections for printer repair instructions.

Parts required (part numbers are subject to change)

Laser Scanner
RG5-3936-000CN

High Voltage Converter 2 PCA
RG5-3943-000CN

DC Controller (8500, 8550 except MFP)
C3983-69006

DC Controller (8550 MFP only)
FG2-9470-040CN

Formatter (8500)
C3983-67905

Formatter (8550 Base, N, DN and MFP)
C7096-69003

Formatter (8550 GN)
C7096-67906

Replacing the Laser Scanner

Remove the top cover. There is one connector that needs to be disconnected before the cover can be lifted off completely. See Figure 1, call-out 1.

On HP Color LaserJet 8550 models only, remove four screws and remove the Laser Scanner shield. The HP Color LaserJet 8500 models do not have this shield. See Figure 1, call-out 2.

Figure 1: HP LaserJet 8550 Laser Scanner shield

1 - Control panel connector

2 - Laser Scanner shield (8550 models only)

Remove four screws, release the wires from the cable stays and unplug the two connectors.

Remove the Laser Scanner assembly. See Figure 2, call-out 1.

Figure 2: Laser Scanner

1 - Connectors for Laser Scanner

Reassemble the printer with the new laser scanner. Then verify if the error has cleared. If the error still persists, go to the next section.

Replacing HV Converter 2 PCA and DC Controller

The cover that goes around the formatter (left rear cover) and the back cover of the printer need to be removed to access the HV Converter 2 PCA and DC Controller.

Turn the printer off.

Remove 11 screws, then the cover that goes around where the formatter slides in (left-rear cover).

Steps to remove the back cover:

Remove one screw, then the small rear-corner cover in the lower left area of the printer.

Open the upper-right door and remove the three screws on the sheet-metal tab. This is part of the rear cover.

Shut the upper-right door; remove the small cover that is below the right-front door on the right side.

Remove the lower two screws that also attach the rear cover.

Remove the remaining 13 screws that attach the rear cover to the printer.

Remove the rear cover.

Remove the formatter.

Unplug the 25 connectors going to the DC Controller. The HP Color LaserJet 8550 MFP model only has one additional connector for the ECO board cable that needs to be unplugged as well.

Remove the four screws that attach the DC controller to the printer then unclip the top-left hand corner of the DC controller. Then gently pull the DC controller away from the printer. See Figure 3, call-out 1 for the location of the clip.

Figure 3: DC Controller clip

1 - Clip to be released

There are six connectors that need to be unplugged from the HV Converter 2 PCA board before removing it. See Figure 4, call-outs 1-4 for the location of the connectors.

Figure 4: HV Converter 2 PCA connectors

1 - 4, HV Converter 2 PCA connectors

Remove the two screws that attach the HV Converter 2 PCA to the printer (see Figure 5, call-out 1).

Figure 5: HV Converter 2 PCA screws

1 - HV Converter 2 PCA screws to be removed

Lift up slightly on the HV Converter 2 PCA and remove it.

Reassembly tips

The bottom of the HV Converter 2 PCA has two alignment slots that must be put into the corresponding slots in the printer upon reassembly. See Figure 6, call-out 1 for the location of these slots.

Figure 6: HV Converter 2 PCA removed from the printer

1 - Alignment slots

Make sure the alignment slots go into the corresponding slots in the printer (see Figure 7, call-outs 1 and 2).

Figure 7: Slots inside the printer

1 - Alignment slots in the printer

2 - Alignment slots in the printer

Make sure to reattach all six connectors properly.

There is a connector on the backside of the DC Controller that must be carefully pushed onto the corresponding connector on the High Voltage Converter 2 PCA when it is reinstalled. Any bent pins in this connection can result in print quality defects.

After reinstalling the new DC Controller, make sure all 25 (or 26 for MFP models) are connected correctly.

NOTE: The DC Controller has three connectors that are not used. They are J204, J228 and J231.

Reinstall the back cover before the cover that goes around the formatter opening.

Move the HP Jetdirect card and hard drive (if equipped) from the old formatter to the new one. Also move any memory DIMMs. Be sure to install them in pairs.

Before installing the new formatter, write down the formatter number. It is locate on a small-white sticker with bar code symbols on it. While the printer is in SERVICE MODE this value will need to be put into the printer's memory.

Putting the printer into SERVICE MODE and adjusting the values

The following values need to be corrected, then verified.

NOTE: If the customer does not have a recent Configuration page that shows the following values then a conservative estimate will have to be made. It is recommended that they be set at 30 percent life remaining. The consumables could possibly be replaced prematurely

Formatter number

Printer serial number

Transfer Kit life remaining

Fuser Kit life remaining

Page counts

Engine Settings 1 and 2. After setting Engine Setting 1 and pushing the ITEM key to go to the value for Engine Setting 2, there will be a three to five (3 - 5) second delay until Engine Setting 2 shows on the control panel.

CAUTION: Verifying and correcting, if necessary, the engine settings should be done last after all of the other values before exiting service mode.

To put the printer into service mode let it turn on to READY.

Push the MENU key until SERVICE MENU shows on the control panel.

Simultaneously push the left side of the VALUE and ITEM keys, NVRAM SETTING should show on the control panel. It may take several tries to do this. NVRAM SETTING must be showing on the control panel to access the values. If something other than NVRAM SETTING shows on the control panel after entering SERVICE MODE then push the MENU key until it shows.

Use the ITEM key to cycle through the values one at a time.

Each value will have the first number or letter underlined; use the VALUE key to change it.

Then push the SELECT key to go to the next number or letter.

After finishing with one item push the MENU key to go to the next one to be changed.

Repeat the procedure outlined in Steps 9 and 10.

Exiting service mode

Push the ITEM key until NVRAM SETTINGS shows on the control panel.

Push the MENU key until EXIT SERVICE MODE shows on the control panel

Push the SELECT key, SERVICE MODE will show on the control panel.

Push the GO button, READY should show on the control panel.

© 2005 Hewlett-Packard