Why is the printing quality poor on my Casio DL-220LA(GY)?
If your Casio Calculator's printing is poor, it could be due to a poor voltage VM, which should be 11V while printing. Another potential cause is a defective motor.
What to do if my Casio DL-220LA(GY) Calculator has no display?
If your Casio Calculator displays nothing, it could be due to several reasons: * There might be no voltage at VF1 and VF2, so check VF1 and VF2. * There might be no digit signal or no segment signal, in this case, check the pulse signals from LSI. * The display tube itself might be defective, which you can determine if VF1, VF2, Digit, and Segment signals are okay.
Why is the display on my Casio Calculator poor?
If your Casio Calculator's display is poor, it could be due to a defective LSI, short or open circuits between digit signals and segment signals (check between LSI and display tube), or a defective display tube.
What to do if my Casio DL-220LA(GY) has poor printing, the motor doesn't stop, or digits are missing?
If your Casio Calculator isn't printing correctly, the motor doesn't stop, or digits are missing, the timing signal might be bad. Check the detector of the printer block and the timing signal. It could also be a defective printer magnet; refer to the printer service manual published separately.
Schematic diagram for the main circuit board of the calculator, detailing components and connections.
Schematic diagram illustrating the calculator's key matrix and switch connections.
List of components for the PCB L226-1 assembly, including LSI, transistors, diodes, capacitors, and resistors.
List of main PCB units and components such as display tube and digital printer.
General| Brand | Casio |
|---|---|
| Model | DL-220LA(GY) |
| Category | Calculator |
| Language | English |
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