CASIO KL750
Instrukcja Serwisowa

4. PRECAUTIONS
To prevent damage of the thermal head caused by static electricity when assembling the chassis ass'y into the unit, the following steps must be followed; 1. Turn the power switch off. 2. Discharge the capacitor C15 (2200µF) on the PCB Z554-1. 3. Connect the FPC of chassis ass'y into a connector CN201 of the Z554-2 ass'y. 4. Assemble the chassis ass'y. 5. Turn the power switch on. (Refer to the Disassembly view (Z554-1 ass'y) of 17 page.))

Figure-2

5. MEASUREMENT
Measure each value according to the following table and figure, if necessary. Measurement point Vcc Vp Ibat+ (Displaying) Ibat+ (Printing) Ibat+ (Power off) Min. Max. Min. Max. Typ. Max. Typ. Max. Typ. Max. Voltage/Current 4.875 V 5.125 V 10.78 V 11.22 V 9 mA 19 mA 0.6 A 0.7 A 10 µA 30 µA When printing at diagnostic program PRINT CHECK 2 Turning power switch off. Turning power switch on. Ip = 300 mA Icc = 30 mA Condition

Note: Ibat+ = Power source (Batteries) Vbat+ = 11 V ± 2% Table-2

Figure-3
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