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7$%/(2)&217(17 6
7$%/(2)&217(17 67$%/(2)&217(17 6
7$%/(2)&217(17 6
1. DISASSEMBLY AND REPLACEMENT (#1~ #22)
2. PARTS LIST
3. P.C.B. CIRCUIT DIAGRAM
4. C.P.U BLOCK DIAGRAM AND PIN ASSIGNMENT
5. MEASUREMENT
• VOLTAGE CHECK
• MOTOR OPERATION CHECK
• PRINT HEAD RESISTANCE MEASUREMENT
• SENSORS CIRCUIT
• CPU OPERATION