Fluke 87 V/AN, Руководство по обслуживанию

Страница: 38 / 50

87 V/AN
Service Manual
30
Restoring the Default Password
If the calibration password is forgotten, the default password (1234) can be restored
using the following steps.
1. While holding down
B
, turn the rotary knob from OFF to VAC . The Meter
displays “
Z
CAL ”.
2. Remove the Meter's top case. Leave the PCA in the bottom case. (See “Opening the
Meter Case”.)
XW
Warning
To avoid electrical shock or personal injury, remove the test
leads and any input signal before removing the Meter's top
case.
3. Through an access hole provided in the top shield, short across the keypads on the
PCA. See Figure 6. The Meter should beep. The default password is now restored.
4. Replace the Meter's top case and turn the rotary knob to
OFF
. (See “Reassembling
the Meter Case).
Access Hole For
PCA Keypad
ama01f.eps
Figure 6. Restoring the Default Password