Sharp FO-1850, Service Manual

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SERVICE MANUAL
No. 00ZF1850THSME
FACSIMILE
MODEL
FO-1850
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
SHARP CORPORATION
Parts marked with " " is important for maintaining the safety of the set. Be sure to replace these parts with specified ones for
maintaining the safety and performance of the set.
CHAPTER 1. GENERAL DESCRIPTION
[1] Specifications . . . . . . . . . . . . . . . . . . . . . 1-1
[2] Operation panel . . . . . . . . . . . . . . . . . . . . 1-2
[3] Transmittable documents . . . . . . . . . . . . 1-3
[4] Installation . . . . . . . . . . . . . . . . . . . . . . . . 1-4
[5] Quick reference guide . . . . . . . . . . . . . . . 1-9
CHAPTER 2. ADJUSTMENTS
[1] Adjustments . . . . . . . . . . . . . . . . . . . . . . . 2-1
[2] Diagnostics and service soft switch . . . . . 2-2
[3] Troubleshooting . . . . . . . . . . . . . . . . . . . 2-19
[4] Error code table . . . . . . . . . . . . . . . . . . . 2-20
CHAPTER 3. MECHANISM BLOCKS
[1] General description . . . . . . . . . . . . . . . . . 3-1
[2] Disassembly and assembly
procedures . . . . . . . . . . . . . . . . . . . . 3-4
CHAPTER 4. DIAGRAMS
[1] Block diagram . . . . . . . . . . . . . . . . . . . . . 4-1
[2] Wiring diagram . . . . . . . . . . . . . . . . . . . . 4-2
[3] Point-to-point diagram . . . . . . . . . . . . . . . 4-3
CHAPTER 5. CIRCUIT DESCRIPTION
[1] Circuit description . . . . . . . . . . . . . . . . . .5-1
[2] Circuit description of control PWB . . . . . .5-2
[3] Circuit description of TEL/LIU PWB . . . . .5-9
[4] Circuit description of
power supply PWB . . . . . . . . . . . . .5-11
[5] Circuit description of CCD PWB . . . . . .5-11
CHAPTER 6. CIRCUIT SCHEMATICS AND
PARTS LAYOUT
[1] Control PWB circuit . . . . . . . . . . . . . . . . .6-1
[2] TEL/LIU PWB circuit . . . . . . . . . . . . . . .6-10
[3] Power supply PWB circuit . . . . . . . . . . .6-12
[4] CCD PWB circuit . . . . . . . . . . . . . . . . . .6-14
[5] Operation panel PWB circuit . . . . . . . . .6-15
[6] Joint PWB circuit . . . . . . . . . . . . . . . . . .6-17
[7] Multifunction interface PWB circuit . . . .6-19
CHAPTER 7. OPERATION FLOWCHART
[1] Protocol . . . . . . . . . . . . . . . . . . . . . . . . . .7-1
[2] Power on sequence . . . . . . . . . . . . . . . . .7-2
CHAPTER 8. OTHERS
[1] Service tools . . . . . . . . . . . . . . . . . . . . . .8-1
[2] IC signal name . . . . . . . . . . . . . . . . . . . . .8-4
PARTS GUIDE
CONTENTS
FO-1850TH