HP LaserJet Enterprise 500 Maintenance Manual - Page 45

Hammer Coil Open. Electrical

Page 45 highlights

List of Messages Message HAM. COIL OPEN* HAMMER COIL BAD etc. HB NOT INSTALLD* Table 2. Message List Explanation Solution Hammer Coil Open. Electrical malfunction of one or more hammer coils. 1. Cycle power. If the message appears, replace the shuttle frame assembly. 2. Power on the printer. Run a print test. If the message appears, replace the CMX controller board. Record the message and return it with defective CMX board. Hammer coil(s) number #, #, etc. failed the current test at power-up. Check that the hammer bank cables are connected. 1. Cycle power. If the message appears, replace the shuttle frame assembly. Record the message and return it with the defective assembly. 2. Power on the printer. If the message appears, replace CMX controller board. Record the message and return it with the defective assembly. Hammer Bank Not Installed. Self-test routines do not detect hammer coils at printer start-up. Power off the printer. Verify that the shuttle frame assembly is installed. 1. Install the shuttle frame assembly. 2. Remove the paper path or pedestal top cover. Verify that the hammer bank logic cable is connected to connector J108 on the CMX controller board and to the shuttle frame assembly. 3. Power on the printer. If the message appears, replace the hammer bank logic cable. 4. Power on the printer. If the message appears, replace the shuttle frame assembly. 5. Power on the printer. If the message appears, replace the CMX controller board. Record the message and return it with defective CMX board. 45

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List of Messages
45
HAM. COIL OPEN*
Hammer Coil Open. Electrical
malfunction of one or more
hammer coils.
1.
Cycle power. If the message
appears, replace the shuttle frame
assembly.
2.
Power on the printer. Run a print test.
If the message appears, replace the
CMX controller board. Record the
message and return it with defective
CMX board.
HAMMER COIL BAD
#, #, #, #, ... etc.
Hammer coil(s) number #, #,
etc. failed the current test at
power-up. Check that the
hammer bank cables are
connected.
1.
Cycle power. If the message
appears, replace the shuttle frame
assembly. Record the message and
return it with the defective assembly.
2.
Power on the printer. If the message
appears, replace CMX controller
board. Record the message and
return it with the defective assembly.
HB NOT INSTALLD*
Hammer Bank Not Installed.
Self-test routines do not detect
hammer coils at printer start-up.
Power off the printer. Verify that
the shuttle frame assembly is
installed.
1.
Install the shuttle frame assembly.
2.
Remove the paper path or pedestal
top cover. Verify that the hammer
bank logic cable is connected to
connector J108 on the CMX
controller board and to the shuttle
frame assembly.
3.
Power on the printer. If the message
appears, replace the hammer bank
logic cable.
4.
Power on the printer. If the message
appears, replace the shuttle frame
assembly.
5.
Power on the printer. If the message
appears, replace the CMX controller
board. Record the message and
return it with defective CMX board.
Table 2. Message List
Message
Explanation
Solution