Sharp PC-6220 Service Manual

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P C-6220
SHARP
SERVICE MANUAL
CODE: 00ZPC6220SM-E
PERSONAL COMPUTER
MODEL
PC-6220
OPTION: CE-621NK
CE-621A
CE-621B
CE-621EV
CE-621F
~----------- CONTENTS - - - - - - - - - - - - - . "
CHAPTER 1. Out line of the PC-6220 .............................. 1
CHAPTER 2. Disassembly and assembly ........................... 9
CHAPTER 3. System block diagram .............................. 12
CHAPTER 4. Theory of operation ................................ 15
CHAPTER 5. HOD ............................................ 31
CHAPTER 6. LCD ............................................ 35
CHAPTER 7. Power supply unit .................................. 38
CHAPTER 8. Keyboard (CE-621 NK) .............................. 46
CHAPTER 9. Description of LSls ................................. 51
CHAPTER 10. CRT IIF UNIT (CE-621 A) ............................ 86
CHAPTER 11. Add-on Battery pack (CE-621 EV) ...................... 90
CHAPTER 12. 3.5 inch FDD unit (CE-621 F) : ........................ 93
CHAPTER 13. Circuit diagrams and PWB layouts ..................... 95
Parts Guide
SHARP CORPORATION
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.