Service Manual
Page 2
... Chart) 3-1. Operating Frequency Horizontal Vertical : 30 ~ 63kHz : 56 ~ 75Hz 4. CONTENTS SPECIFICATIONS 2 PRECAUTIONS 3 TIMING CHART 4 OPERATING INSTRUCTIONS 5 WIRING DIAGRAM 6 BLOCK DIAGRAM 7 DESCRIPTION OF BLOCK DIAGRAM 8 ADJUSTMENT 9 TROUBLESHOOTING GUIDE 10 PRINTED CIRCUIT BOARD 14 EXPLODED VIEW 15 REPLACEMENT PARTS LIST 17 PIN CONFIGURATION 20 SCHEMATIC DIAGRAM 22 SPECIFICATIONS 1. Right : 55° min. Top...
... Chart) 3-1. Operating Frequency Horizontal Vertical : 30 ~ 63kHz : 56 ~ 75Hz 4. CONTENTS SPECIFICATIONS 2 PRECAUTIONS 3 TIMING CHART 4 OPERATING INSTRUCTIONS 5 WIRING DIAGRAM 6 BLOCK DIAGRAM 7 DESCRIPTION OF BLOCK DIAGRAM 8 ADJUSTMENT 9 TROUBLESHOOTING GUIDE 10 PRINTED CIRCUIT BOARD 14 EXPLODED VIEW 15 REPLACEMENT PARTS LIST 17 PIN CONFIGURATION 20 SCHEMATIC DIAGRAM 22 SPECIFICATIONS 1. Right : 55° min. Top...
Service Manual
Page 10
YES CHECK KEY CONTROL CONNECTOR ROUTINE CHECK POWER NO BOARD, AND FIND OUT A SHORT POINT AS OPENING EACH POWER LINE NO CHECK U803. NO CHECK IIC LINE CONNECTION (U501, U502) NO CHECK U201 VCC, XTAL, RESET NO POWER NO POWER (POWER INDICATOR OFF) CHECK J705 VOLTAGE PIN5, PIN6 (5V)? YES CHECK U805 PIN 1 Voltage (5V) ? YES CHECK U802 PIN 1 VOLTAGE (5V) ? NO CHECK 5VS LINE (OPEN CHECK) NO PROBLEM IS U201 PIN12 (3.3V) VOLTAGE REPEATED AS PULSE SHAPE ? TROUBLESHOOTING GUIDE 1.
YES CHECK KEY CONTROL CONNECTOR ROUTINE CHECK POWER NO BOARD, AND FIND OUT A SHORT POINT AS OPENING EACH POWER LINE NO CHECK U803. NO CHECK IIC LINE CONNECTION (U501, U502) NO CHECK U201 VCC, XTAL, RESET NO POWER NO POWER (POWER INDICATOR OFF) CHECK J705 VOLTAGE PIN5, PIN6 (5V)? YES CHECK U805 PIN 1 Voltage (5V) ? YES CHECK U802 PIN 1 VOLTAGE (5V) ? NO CHECK 5VS LINE (OPEN CHECK) NO PROBLEM IS U201 PIN12 (3.3V) VOLTAGE REPEATED AS PULSE SHAPE ? TROUBLESHOOTING GUIDE 1.