Chapter 2
2-42
2.4.3 Carriage Relay PCB
2.4.3.1 Carriage relay PCB components
0020-5553
iPF810 / iPF820
F-2-31
a) Image data relay function
This function relays the image data from the main controller PCB to the printhead.
The function for processing image data is not supported.
b) Sensor relay function
This function relays the input signals from the multi sensor, printhead fixer lever sensor, and linear encoder to the main controller PCB.
2.4.4 Head Relay PCB
2.4.4.1 Head relay PCB components
0020-5555
iPF810 / iPF820
F-2-32
a) Latch IC (IC201)
DI sensor read control function
Obtains reading value of the DI sensor in the printhead and the head rank value for each color and outputs them to the main controller based on the control commands
from the main controller.
Environment temperature read control function
Outputs the environment temperature detected by the thermistor on the head relay PCB to the main controller based on the control commands from the main con-
troller.
Relay function of the power to the logic components in the printhead
Supplies the power to the logic components in the printhead based on the control commands from the main controller.
b) Multi sensor control
These IC's generates the LED control signals and makes gain adjustment for the multi sensor.
c) Image data relay function
IC201
IC201
Summary of Contents for iPF800 Series
Page 1: ...Aug 13 2008 Service Manual iPF800 series ...
Page 2: ......
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Page 11: ...Chapter 1 PRODUCT DESCRIPTION ...
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Page 14: ......
Page 38: ...Chapter 1 1 24 Hold this lever to pull out the lower roll unit ...
Page 100: ...Chapter 1 1 86 ...
Page 101: ...Chapter 2 TECHNICAL REFERENCE ...
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Page 159: ...Chapter 3 INSTALLATION ...
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Page 176: ...Chapter 3 3 14 ...
Page 177: ...Chapter 4 DISASSEMBLY REASSEMBLY ...
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Page 238: ...Chapter 4 4 58 ...
Page 239: ...Chapter 5 MAINTENANCE ...
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Page 246: ...Chapter 5 5 4 5 Close upper cover 1 F 5 6 1 ...
Page 247: ...Chapter 5 5 5 ...
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Page 249: ...Chapter 6 TROUBLESHOOTING ...
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Page 275: ...Chapter 7 SERVICE MODE ...
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Page 303: ...Chapter 8 ERROR CODE ...
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Page 318: ...Chapter 8 8 12 ...
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