Intermec ColorCoder V4 Service Manual page 254

6.8 Function Troubleshooting, cont'd
6.8:A Measures to Take Against Malfunctions, cont'd.
No DC Power Output
Cause Step
AC power
Connectors and Wir-
ing
DC power unit
Formatter PCB
Excess current
Intermec ColorCoder V4 – Service Manual Ed. 1
Check Point
1 When the power switch is turned on, is
AC power supplied to the DC power
unit?
Are the connections and wiring of the
2
following connectors in order?
• DC power unit: J001, J002
• Formatter PCB: J107. J108
• Engine 1 PCB: J306, J314
• Engine 2 PCB: J405
Disconnect the connectors (J001, J002)
3
of the DC power unit. Turn the power
switch on and check the voltage be-
tween the following terminals. Is the
voltage as prescribed?
+ Probe - Probe
J002-15 J002-7
J001-7 J001-9
J001-9 J001-8
4 When the connectors (J001, J002) are
inserted and the power switch is turned
on again, is the voltage between the
following terminals as prescribed?
+ Probe - Probe
J001-2 J001-1
J001-3 J001-1
When the connectors (J001, J002) are
5
inserted and the power switch is turned
on again, is the voltage between the
following terminals as prescribed?
+ Probe - Probe
J002-12 J002-4
J002-10 J002-1
Chapter 6
Result
No
No
No
Voltage
Approx. 5V
Approx. 12V
Approx. 12V
No
Voltage
Approx. 5V
Approx. 5V
No
Voltage
Approx. 24V
Approx. 24V
Troubleshooting
Corrective Action
Check in accordance with "17.
No AC Power".
Reconnect and rewire the con-
nectors properly.
Replace the DC power unit.
Replace Formatter PCB. If the
problem remains unchanged,
replace the DC power unit.
Check if there is a short circuit in
either the Formatter, Engine 1,
Engine 2, Roll Holder board, or
the DC load system, and remove
the cause of the over-current.
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