Testing: Module Qw-3410; Measuring Current Consumption - Casio GW-9400-1 Service Manual & Parts List

7. TESTING: MODULE QW-3410

7-1. MEASURING CURRENT CONSUMPTION

If irregularity of current consumption is suspected, measure the current consumption.
• Condition
Short-circuit the MP and VSS terminals using a metal object like a staple.
tape
Use a stable power source and an ammeter.
Connect the positive electrode to the HOLDER/BATTERY 2730, the negative electrode to
the CIRCUIT SUPPORTER 3414.
CIRCUIT SUPPORTER 3414
HOLDER/BATTERY 2730
1) Apply a voltage of 2.5.
2) Perform AC.
3) Wait two seconds.
4) Shield the dial from light.
5) Measure the current.
staple
VSS terminal
MP terminal
– 16 –
A
( _ )
( + )
V
QW-3410