GEK-99044
Chapter 7 Operator Care and Maintenance
7-13
SERIAL INTERFACE ERRORS
If the host does not stop sending data when the printer reports busy,
the input buffer will eventually fill to capacity. Any additional data
sent by the host will be discarded and an error condition will exist.
This error may be reported to the operator via GenPtrOpts (Group 1)
strap 16. See “GenPtrOpts” in Chapter 3 and Table 3 in Appendix G
for additional information.
Parity, Framing and UART overrun characters will be replaced in the
data stream with the “*” character.
Strap 16
Type of Error
Display/Print
Message
Action
performed
Disabled
Parity Error
Parity Error
Replace character
with “*”
Disabled
Framing Error
Framing Error
Replace character
with “*”
Disabled
UART Overflow Error
UART Overflow
Replace character
with “*”
Disabled
Buffer Overflow Error
Buffer
Overflow
Lost data after
end of Buffer
When Strap 16 is enabled, the action performed is the same as Strap
16 disabled, but a message is displayed and printed. The printer is
placed in an off line condition. Press the
CLEAR
pushbutton to
continue.
PRINT HEAD REPLACEMENT
5050/5100 (50, 55 OR 60 DBA) CABINET MODEL
The 33 print heads in this printer are identical. If a replacement print
head is temporarily unavailable, rearrange the heads so that the
defective one is located in an area that is least likely to be used.
Relocating the defective head to the far right end of the shuttle would
still allow a full 12.8-inch line (128 characters at 10 cpi) to be printed
starting at the left.
Print heads for the 500-lpm printers have one actuator. See Figure 7-
2. Print heads for the 1000-lpm printer have two actuators.
FIGURE 7–2 PRINT HEADS
1000-LPM PRINT HEAD
500-LPM PRINT HEAD
BARRELS
HANDLE
