The main board supplies dc power to all copier dc components. All sensors,
switches, thermistors, and the DF interface board (option) operate on +5
volts. The operation panel operates on +5 volts supplied by the main board.
All other dc components, including the power relay (RA401) and the main
motor relay (RA402), operate on +24 volts.
When the main board receives power, it activates the power relay (RA401),
which then supplies ac power to the fusing lamp drive circuit and the
exposure lamp drive circuit on the ac drive board. The fusing lamp drive
circuit receives a trigger signal from the main board and the fusing lamp
lights. The exposure lamp does not turn on until the main board sends a
trigger pulse to the exposure lamp drive circuit.
When the
key is pressed, the main board energizes the main motor relay
(RA402). Then, the main motor turns on.
When the main switch is turned off, power to the main board and to RA401 is
cut off, and the optional drum and optics anti-condensation heaters are
turned on.
A202/
A203
Co
p
ier
POWER DISTRIBUTION
SM
8-11
A202/A203
Содержание A151
Страница 1: ...SERVICE MANUAL PN RCFM3213 A151 A152 A202 A203 RICOH GROUP COMPANIES ...
Страница 2: ...SERVICE MANUAL A151 A152 A202 A203 RICOH GROUP COMPANIES ...
Страница 3: ...A151 A152 A202 A203 FIELD SERVICE MANUAL PN RCFM3213 ...
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Страница 27: ...OVERALL MACHINE INFORMATION ...
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Страница 33: ...GUIDE TO COMPONENTS ...
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Страница 43: ...INSTALLATION ...
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Страница 55: ...SERVICE TABLES ...
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Страница 95: ...REPLACEMENT AND ADJUSTMENT ...
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Страница 193: ...TROUBLESHOOTING ...
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Страница 277: ...A202 A203 SERVICE MANUAL ...
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Страница 372: ...Tech Service Bulletin No 3013 3213 008 Page 2 of 3 Continued ...
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