Service Manual
Table of Contents
0 | |||
Chapter 1. | INTRODUCTION | 2 | |
a. | Hardware | 2 | |
b. | Software | 2 | |
c. | Block Diagram | 2 | |
Chapter 2. | Testing Procedures | 3 | |
a. Testing flow chart | 3 | ||
b. Check VCC +5V | 5 | ||
c. Check REG2 Pin 2 Signal | 6 | ||
d. Check REG5 Pin 2 Signal | 7 | ||
e. Check REG3 Pin 2 Signal | 8 | ||
f. Check REG4 Pin 2 Signal | 9 | ||
g. Check X1,U22 Pin 26 X’TAL Signal | 10 | ||
h. Check X2 Pin 3,U5 Pin 62,U1 Pin 41 OSC Signal | 11 | ||
i. Check Y301 X’TAL Signal | 12 | ||
j. Check U1 CLK_SAA Signal | 13 | ||
k. Check U1 RAM_CLK Signal | 14 | ||
Chapter 3. | Troubleshooting Guide | 15 | |
Chapter 4. Removal and Replacement | 16 | ||
Chapter 5. | Parts list | 17 | |
Chapter 6. | Tools | 17 | |
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