Exposure Lamp Voltage Control - Ricoh FT4220 Service Training Manual

3.8 EXPOSURE LAMP VOLTAGE CONTROL

The main board controls the exposure lamp voltage through the ac drive
board. The exposure lamp voltage is based on the base lamp voltage and
various correction factors. The exposure lamp data setting determines the
base lamp voltage. The following table gives the approximate lamp voltage
for each data setting.
Exposure Lamp Data/Voltage Reference Table (SP48)
Exposure lamp voltage
Exposure
lamp data
115V
machine
100 57.1
101 57.6
102 58.2
103 58.8
104 59.3
105 59.9
106 60.5
107 61.1
108 61.6
109 62.2
110 62.8
111 63.3
112 63.9
113 64.5
114 65.0
115 65.6
116 66.2
117 66.8
118 67.3
119 67.9
120 68.5
121 69.0
122 69.6
123 70.2
124 70.8
125 71.3
NOTE: Exposure lamp rating: 115 V machine: 97 V/280 W
Default data value: 126
FT4220/4222
(standard)
220/230/240V
machine
105.9
106.9
108.0
109.1
110.1
111.2
112.2
113.3
114.4
115.4
116.5
117.5
118.6
119.6
120.7
121.8
122.8
123.9
124.9
126.0
127.1
128.1
129.2
130.2
131.3
132.4
220/230/240 V machine: 180 V/310 W
2-18
Exposure lamp voltage
Exposure
lamp data
115V
machine
126 71.9
127 72.5
128 73.0
129 73.6
130 74.2
131 74.7
132 75.3
133 75.9
134 76.5
135 77.0
136 77.6
137 78.2
138 78.7
139 79.3
140 79.9
141 80.5
142 81.0
143 81.6
144 82.2
145 82.7
146 83.3
147 83.9
148 84.4
149 85.0
150 85.6
(standard)
220/230/240V
machine
133.4
134.5
135.5
136.6
137.6
138.7
139.8
140.8
141.9
142.9
144.0
145.1
146.1
147.2
148.2
149.3
150.4
151.4
152.5
153.5
154.6
155.6
156.7
157.8
158.8
STM