7.2 Repair and Servicing
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Troubleshooting
If problems are encountered with operation, check the appropriate
items below.
Symptom
Items to Check
• Meter does not turn
on
• Meter turns off dur-
ing use
When using AC adapter
• Is the AC adapter plug securely inserted into the jack, and the
power cord into the outlet?
• Is the AC adapter the specified Model 9445-02?
• Does the meter turn on when only the batteries and not when the
AC adapter is connected?
The AC adapter may be faulty.
❖
See Section 2.2.2 "Connecting the AC Adapter (Optional)" (page 30)
When using external power
• Is the external power plug inserted all the way into the jack?
• Is the external power cable connected to the power source?
• Is the polarity correct?
• Is the external supply voltage between 8.4 and 15.6 V, and capa-
ble of providing at least 1.2 VA?
❖
See Section 2.2.3 "Using External Power" (page 31)
When using batteries
• Are the batteries discharged?
Replace if discharged.
• Have the batteries passed their expiration date?
Even if batteries have not been used, they may be unusable
because of reduced capacity as a result of self discharge.
• Are the battery contacts damaged or corroded?
❖
See Section 2.2.1 "Installing/ Changing the Batteries" (page 29)
•
indicator dis-
played
• Meter turns off
immediately after
indicator
appears
When using batteries
• Are the batteries discharged?
Replace if discharged.
❖
See Section 2.2.1 "Installing/ Changing the Batteries" (page 29) and
Section 5.13 "Battery-Low Warning" (page 105)
• Button presses are
not accepted
• Is integration, duty measurement or data saving in progress?
(
START
and
TIME
displayed)
Button presses are not accepted during these processes.
❖
• When
is displayed (after pressing the
SHIFT
button), some
buttons are ignored.
• Displayed numbers
appear alternating
• Pressing the
button causes the timer and repetitions set-
tings to display alternately once per second.
❖
See page 15
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