Sharp FO-90A Service Manual Page 48
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- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
- FACSIMILE 1
- SERVICE MANUAL 1
- [1] Specifications 3
- [2] Operation panel 4
- [5] Quick reference guide 5
- CONTROL PWB 7
- (TOP SIDE) 7
- 2. Diagnostic items 8
- 1. Operating procedure 8
- RANK 0 or 1 9
- FO-90AAR 11
- 5. Soft switch description 11
- • Soft switch 11
- RAPID A CML RELAY ON 20
- DIAL DATA 20
- 2000msec 21
- [3] Troubleshooting 25
- [4] Error code table 26
- CHAPTER 4. DIAGRAMS 28
- [2] Wiring diagram 29
- [3] Point- to-point diagram 30
- [1] Circuit description 31
- 1. General description 32
- 2. Description of each block 32
- (1) Main control block 32
- Operation panel key scanning 35
- Operation panel LCD display 35
- PROCESSOR 36
- Memory block 2/6 44
- Modem block 3/6 45
- Analog signal block 6/6 48
- [2] TEL/LIU PWB circuit 1/2 51
- TEL/LIU PWB circuit 2/2 52
- [3] Power supply PWB circuit 55
- PARTS GUIDE 59
- I n d e x 72
- ALL RIGHTS RESERVED 74
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