Block Diagram; Power Voltage - Sharp CS-4194H Service Manual

1. Block diagram

2. Power voltage

Measurement
Power voltage
point
F1 - F2 4.5 V ~ 5.1 V
AC
VSS - VDD 4.5 V ~ 5.5 V
DC
Measure with the rated AC input voltage.
• MEASURING PIN POSITION
F1
Remark
14-digit machine
AC
DC
CS-4194H Block diagram
3. Printer speed adjustment
Measuring procedure
1) Connect VSS and P00 signal of LSI to the universal counter as
shown below.
Universal
counter
2) Press PF key, and measure the rising interval of P00 signal.
3) Adjust the volume (VR1) to set the rising interval of P00 signal to
the following range.
SPEC : 222 2ms
P00
VSS
P00 1
terminal
– 2 –
Pull u resistor, 10K
P00
et
Pull u P00 si nal to
222 2ms
F