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FO-90RA
SERVICE MANUAL
No. 00ZFO90RA/SME
FACSIMILE
MODEL FO-90
Chapters 1, 2, 3, 7 and 8 of this manual are omitted because they are partly common to the FO-50RA/
70RA. Please refer to previous service manual (00ZFO50RA/SME) for these chapters.
CONTENTS
CHAPTER 1. GENERAL DESCRIPTION CHAPTER 5. CIRCUIT DESCRIPTION
[1] Specifications ............................................ 1-1 [1] Circuit description ...................................... 5-1
[2] Operation panel......................................... 1-2 [2] Circuit description of control PWB ..............5-2
[3] Refer to the service manual of FO-50RA. [3] Circuit description of TEL/LIU PWB .......... 5-9
[4] Refer to the service manual of FO-50RA. [4] Circuit description of
[5] Quick reference guide ............................... 1-9 power supply PWB ............................5-12
[5] Circuit description of CIS unit ...................5-12
CHAPTER 2. ADJUSTMENTS
[1] Adjustments ............................................... 2-1 CHAPTER 6. CIRCUIT SCHEMATICS AND
[2] Diagnostics and service soft switch .......... 2-2 PARTS LAYOUT
[3] Refer to the service manual of FO-50RA. [1] Control PWB circuit ................................... 6-1
[4] Refer to the service manual of FO-50RA. [2] TEL/LIU PWB circuit ................................. 6-9
[3] Power supply PWB circuit ...................... 6-13
CHAPTER 3. MECHANISM BLOCKS
[4] Operation panel PWB circuit ................... 6-15
[1] Refer to the service manual of FO-50RA.
[2] Refer to the service manual of FO-50RA. CHAPTER 7. OPERATION FLOWCHART
[1] Refer to the service manual of FO-50RA.
CHAPTER 4. DIAGRAMS
[2] Refer to the service manual of FO-50RA.
[1] Block diagram ............................................4-1
[2] Wiring diagram .......................................... 4-2 CHAPTER 8. OTHERS
[3] Point-to-point diagram ............................... 4-3 [1] Refer to the service manual of FO-50RA.
[2] Refer to the service manual of FO-50RA.
PARTS GUIDE
Parts marked with " " are 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.
This document has been published to be used
SHARP CORPORATION for after sales service only.
The contents are subject to change without notice.
FO-90RA
CAUTION FOR BATTERY REPLACEMENT
(Danish) ADVARSEL !
Lithiumbatteri-Eksplosionsfare ved fejlagtig h