Chapter 3.
Faults and Troubleshooting
37
Graphic Check
This message indicates that the printer has received an
unprintable graphic. This message only appears if the Set
Graphic Error Action Command has been set properly. Clear
the message (Clear key), then place the printer back Online.
Confirm with host why Graphic Check message was sent.
HammerTime
The software controlling the print hammer timing has detected
an internal inconsistency. Press the Clear key. If it faults
repeatedly, skip to the next print job, and replace the
Controller Board.
HammerVoltage1
One of the hammer drive circuits was turned on when it
shouldn’t have been, so all printing has been disabled. The
usual cause is a failed drive transistor. Replace the Controller
Board.
HammerVoltage2
A high resistance coil fault has likely occurred in one or more
of the hammer coils. Note: this fault message will have been
preceded by printing slow-down attempts associated with On-
The-Fly thermal monitoring of hammer bank temperature.
Check the hammer bank for defective coils. Replace the
Controller Board.
Heap Overflow
Graphics memory space is full and the printer cannot accept
or process data. Printer will reset and data will be lost. Insert
line terminators in data stream so the printer will process the
data, then retransmit the data.
LostAdrs (27)
Certain communication signals have been lost between the
printer and the host computer. Check cable connection, setup
of host, and printer address setting.
Lost Sync (28)
The host is not communicating with the printer. Verify
address of computer and host setup. Check I/O cables.
When this message is displayed during printer installation,
you may continue to test the printer by placing the printer
Offline and entering Menu mode to select print tests or
calibration routines.
NoVFU Loaded
A VFU command was received from the host before a VFU
was downloaded. Download the required VFU information,
then retransmit the data.
NVRAM Fault
The nonvolatile data checksum has failed because of one of
the following conditions:
(1) A new RAM has been installed.
(2) New software with different nonvolatile variables has been
installed.
(3) The variable values have been altered in a destructive
manner.
Depress the Clear key. If the message does not clear, cycle
printer power. If the message still does not clear, replace the
Controller Board.
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