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Technical Bulletin
The Summit marker plotter has preprogrammed error conditions, which are defined by a particular colored light sequence emitted from the
keypad error light. The error conditions are as follows:
Error Condition
Description
Steady Red
Memory Buffer Overrun or a
Major Communication Error
Flashing Red
X-Axis Jam
Steady Green
Serial Error, Communication
Problem or Sensor Error
Defective RS-232 cable.
Defective computer serial port.
Damaged RS-232 interface IC on logic board.
Paper jammed into grit shaft.
Ceased grit shaft bearing(s).
Ceased servo motor.
Blown transistor(s) on logic board (Position Q1–Q4)
Loose x-axis transmission motor pulley.
Damaged x-axis transmission gear assy.
Loose set screw on flex coupling.
Loose set screw on grit shaft assy.
Sensor did not read frame mark.
Damaged RS-232 interface IC on logic board.
Troubleshooting Error Conditions/Summit
Possible Cause/Solution
Replace cable.
Perform computer port test from control center
software to verify, if fails replace serial port.
Perform plotter port test from control center software
to verify, if fails replace communication chip.
(102822 IC, RS-232 Interface)
Clear paper jam.
Replace grit shaft bearing(s).
Manually turn motor shaft, if hard to turn replace
servo motor.
Test transistor(s) w/ohm meter touching D (drain) &
S (source) leads; should read 2.23 mega ohms,
replace if reading is less.
Inspect and check pulley set screws.
Inspect gear for damaged teeth, replace damaged
gear.
Inspect and check flex coupling set screws.
Check all set screws on grit shaft assy.
Check cable connection; clean sensor lens; adjust
sensor height; test sensor.
Perform plotter port test from control center software
to verify, if fails replace communication chip.
(102822 IC, RS-232 Interface)
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