Instruction manual

52
Chapter 3 Troubleshooting Procedures
Downloads consistently fail
NOTE: Most download problems are detected by software during the
procedure and communicated by LCD messages. (See Table 5: on
page 132.) If downloads fail consistently with no messages or with
erratic messages, suspect a hardware failure.
1. Power off the printer. Remove the paper path or pedestal top cover.
Check the I/O cable connections from the host to the printer. Check the
parallel cable connection at J112 on the CMX controller board. Inspect all
cables for damaged, bent, broken, or burnt pins.
Replace any damaged cables. Reconnect all I/O cables; make sure
all connections are clean and tight.
2. Remove the flash SIMMs. Inspect the flash SIMM sockets on the CMX
controller board.
If any socket pins are bent or damaged, replace the CMX controller
board.
3. Check that customer has the right size SIMMs for the emulation. (See
page 171)
Install SIMMs that support the emulation software.
4. Power up the printer. Download the emulation (page 130).
If the download fails, activate the Boot Diagnostics Menu (page 92)
and run MISC UTILITIES / RUN MEMORY TESTS. If memory fails
test, replace the DRAM. If memory tests OK, replace the flash
SIMM(s).
5. Power up the printer. Download the emulation (page 130).
If the download fails, replace the CMX controller board.
DRVR CIR BAD* Message
1. Driver Circuit Bad: the hammer coil count test failed.
Cycle power. If the message appears, press CLEAR.
2. Power off the printer. Remove the shuttle cover. At the shuttle frame
assembly, disconnect the hammer bank logic and power cables. Power
on the printer.
If “HB NOT INSTALLD” appears on the LCD, replace the shuttle
frame assembly. If “HB NOT INSTALLD” does not appear on the
LCD, replace the CMX controller board.
ERROR: DC PROGRAM
NOT VALID Message
1. The printer cannot find the data controller program or the validation
checksum is corrupt.
Download the program again (page 130). If the message appears,
replace all flash memory SIMMs.