Testing: Module Qw-5311; Measuring Current Consumption - Casio QW-5311 Service Manual & Parts List

8. TESTING: MODULE QW-5311

8-1. 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.
Use a stable power source and an ammeter.
Connect the positive electrode to the TERMINAL/BATTERY(+) 5219, the negative electrode to
the CIRCUIT SUPPORTER 5311.
CIRCUIT SUPPORTER 5311
TERMINAL/BATTERY(+) 5219
�) Apply a voltage of 2.5.
2) Perform AC. (Refer to "5-2 AC" on P5.)
3) Shield the dial from light.
4) Measure the current within one minute.
tape
staple
MP terminal
VSS terminal
– �� – �� – –
A
( _ )
( + )
V
QW-5311