Sharp EL-1607P, Руководство по обслуживанию

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EL-1607P Block diagram
– 2 –
1. Block diagram 2. Power voltage
*
Measure with the rated AC input voltage.
• MEASURING PIN POSITION
3. Ink roller replacement
If printing is blurry even when the ink roller is in the proper position,
replace the roller.
Ink roller: Type EA-781R-BK (Black)
Type EA-781R-RD (Red)
WARNING:
1. Set the power switch to OFF.
2. Remove the printer cover.
3. Remove the ink roller by turning it counterclockwise and pulling it
upward.
4. Install the correct color new ink roller and press it in the correct
position. Make sure that the ink roller is securely in place.
㧔
㧦 Power supply line 㧕
㧔
㧦 Signal line 㧕
L S I
KEY/SL-SW
PRINTER
Display tube
AC input
VFD DRIVER
AC
transfomer
Power supply
Circuit
P/H DRIVER
( )BATT.
( )ACO only
*
*
Measurement point Power voltage
F1 - F2 4.0 V
AC
~ 4.4 V
AC
VSS - VDD
VSS - VCC
4.5 V
DC
~ 5.5 V
DC
F2
F1
F1
VCC VSS VDD
F2
APPLYING INK TO WORN INK ROLLER OR USE OF UNAP-
PROVED INK ROLLER MAY CAUSE SERIOUS DAMAGE TO
PRINTER.
Black
Red