Intermec ColorCoder V4 Service Manual page 247

6.8 Function Troubleshooting, cont'd
6.8:A Measures to Take Against Malfunctions, cont'd.
Error Indication "21"
Cause Step
Connectors and Wir-
ing
Head Position Sen-
sor 1 (PS8)
Head Position Sen-
sor 2 (PS9)
Head drive shafts,
wires, pulleys
Motor unit
Head motor
Engine 2 PCB
Engine 1 PCB
Intermec ColorCoder V4 – Service Manual Ed. 1
Check Point
1 Are the connections and wiring of the
following connectors in order?
• Engine 2 PCB: J407, J409
• Head motor: J19
• Head Position Sensor 1: J25
• Head Position Sensor 2: J26
Is the Head Position Sensor 1 (PS8)
2
properly attached? Is the flag properly
attached?
Is the Head Position Sensor 1 (PS8)
3
working properly?
Is the Head Position Sensor 2 (PS9)
4
properly attached? Is the flag properly
attached?
5 Is the Head Position Sensor 2 (PS9)
working properly?
6 Are the head drive shafts, wires, and
pulley in order?
7 Are the motor unit installation and the
gears back lush between the motor and
the PHS holder in order?
Turn OFF the power switch and discon-
8
nect the head motor (M3) connector.
Is the resistance between the terminals
(orange-blue, red-yellow) of the con-
nectors on the motor side about 3 ohms?
Is the problem corrected when Engine 2
9
PCB is replaced?
10
Chapter 6 Troubleshooting
Result Corrective Action
No Reconnect and rewire the con-
nectors properly.
No Reattach Head Position Sensor
1 (PS8) and flag properly.
No Replace Head Position Sensor 1
(PS8).
No Reattach Head Position Sensor
2 (PS9) and flag properly.
No Replace Head Position Sensor 2
(PS9).
No Replace the PHS unit.
No Correct the motor unit installa-
tion and the gear back lush.
No Replace Head Motor (M3).
Yes Finished.
No Replace Engine 1 PCB.
246