Casio Qt6000 Service Manual
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Page 101
— 99 — 22. SN74LV08APWR (IC47,57) 11 1213 14V CC 4B 4A 4Y 3B 3A 1 2 3 4 5 6 7 89 10 1A GND1B 1Y 2A 2B 2Y 3Y 23. SN74LV10APWR (IC23) 11 1213 14V CC 1C 1Y 3C 3B 3A 1 2 3 4 5 6 7 89 10 1A GND1B 2A 2B 2C 2Y 3Y A B Y C 24. SN74LV244APWR (IC22,38,39) 11G 1A1 2Y4 1A2 2Y3 1A3 2Y2 1A4 2Y1 GNDVcc 2G 1Y1 2A4 1Y2 2A3 1Y3 2A2 1Y4 2A1 2 3 4 5 6 7 8 9 1020 19 18 17 16 15 14 13 12 11 Inputs GA HX LH LLOutput Y Z H L H : High L : Low X: Don’t care Z: High impedance 25. SN74LV32APWR (IC48,52~54) 11 1213 14V CC 4B 4A 4Y...
Page 102
— 100 — 26. SN74LV374APWR (IC16,21,50,51) 1Q 1D1DC1 CLK OE1 2 11 3 120 219 318 417 516 615 714 8 1Q 1D 2Q 2D 3Q 3D 4Q 13VccFUNCTION TABLE 8Q 8D 7D 7Q 6D 6Q 5D 912 10 4D GND 115Q OE CLK OE INPUTS OUTPUT Q H L Q 0 Z CLK D L L L HH L X X L X 27. SN74LVC1G08 (IC56) 11 1213 14V CC 4B 4A 4Y 3B 3A 1 2 3 4 5 6 7 89 10 1A GND1B 1Y 2A 2B 2Y 3Y 28. SN74LVC1G97 (IC31,58) 2 In1 GND In0In2 V CCY35 6 4 1 FUNCTION TABLE INPUTSOUTPUT In2In1In0Y LLLL LLHL LHLH LHHH HL LL HLHH HH LL HHHH logic diagram (positive logic)...
Page 103
— 101 — 29. XC6206P182MR (IC34) PIN ASSIGNMENT BLOCK DIAGRAM NAME Ground VOUT Power Input VIN PIN NUMBERPIN FUNCTION 2 3VSS 1 Output12 3 VIN VOUT VSS Current Limit Voltage Reference VINVOUT VSS 30. XC6219B332MR (IC46) PIN ASSIGNMENT BLOCK DIAGRAM NAME Input VSS PIN NUMBERPIN FUNCTION 2VIN 1Ground ON/OFF Control NC OutputVOUT 4 5CE 3 No Connection Current Limit ON/OFFControl VoltageReference each circuit CE V SS VOUT VIN R2 R1 4 23 15 CE (NC) V INVSS VOUT
Page 104
— 102 — 31. XC62EP1502MR (IC42) 32. XC6365A363MR (IC2) PIN ASSIGNMENT NAME Ground VIN PIN NUMBERPIN FUNCTION 2VSS 1Supply voltage input Regulated voltage output EXT Chip enableCE/CE 4 5VOUT 3 Base current control 4 23 15 VOUT VSS VIN CE/CE EXT VDD EXT/ V OUT (FB) 3 2 15 GND CE 4 Vref whth Soft Start, CERamp Wave Generatpr, OSC Phase Compensation PWM/PFM ControlerPWM Controler Error Amp Buffer, Drive VDDVOUT EXT/ GND CE
Page 105
— 103 — 11. PCB LAYOUT MAIN PCB (E820-1R PCB) (TOP VIEW)
Page 106
— 104 — MAIN PCB (E820-1R PCB) (BOTTOM VIEW)
Page 107
— 105 — INTERFACE PCB (E820-CNB PCB) (TOP VIEW) (BOTTOM VIEW) LED PCB (E820-LED PCB) (TOP VIEW) (BOTTOM VIEW) MIC PCB (E820-MIC PCB) (TOP VIEW) (BOTTOM VIEW)
Page 108
— 106 — 12. CIRCUIT DIAGRAM MODEL : QT-6000 (EX-820) CONTENTS 1. MAIN PCB CIRCUIT 2-1. MAIN PCB CIRCUIT (1/11) ......................................................................................... 107 2-2. MAIN PCB CIRCUIT (2/11) ......................................................................................... 108 2-3. MAIN PCB CIRCUIT (3/11) ......................................................................................... 109 2-4. MAIN PCB CIRCUIT (4/11)...
Page 109
— 107 — Model Name Board No. Drawing No. CASIO COMPUTER CO.,LTD.QT-6000 (EX-820)E820-1 MAIN BOARD (1/11) RJE50****
Page 110
— 108 — Model Name Board No. Drawing No. CASIO COMPUTER CO.,LTD.QT-6000 (EX-820)E820-1 MAIN BOARD (2/11) RJE501***D20*