Evcc3, Vcc1.8, Vcc3, Vcc5, Blvcc Voltage Check; Vcc2, Vcc7, Vcc15, Vee7 Voltage Check - Casio QV-4000 Service Manual And Parts List

4-4.

EVCC3, VCC1.8, VCC3, VCC5, BLVCC Voltage check

1. Preparation
• AC adaptor or voltage regulator
• Multimeter
2. Adjustment procedure
Confirm the following voltages.
EVCC3 (CP140) = 3.30 ± 0.10 [V]
VCC1.8 (CP116) = 1.80 ± 0.08 [V]
(CP112) = 3.30 ± 0.10 [V]
VCC3
(CP120) = 5.00 ± 0.10 [V]
VCC5
BLVCC (CP180) = 5.40 ± 0.20 [V]

4-5. VCC2, VCC7, VCC15, VEE7 Voltage check

1. Preparation
• AC adaptor or voltage regulator
• Multimeter
2. Adjustment procedure
(CP172) = 5.00 ± 0.30 [V]
VCC2
(CP171) = 7.50 ± 0.50 [V]
VCC7
VCC15 (CP170) = 15.0 ± 0.10 [V]
(CP173) = -7.5 ± 0.60 [V]
VEE7
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