ep-70/90 Feb.
2000 CIRCUIT DIAGRAM (JACK, PHONES) ／回路図(JACK, PHONES) JACK BOARD ASSY IN OUT MIDI IC1D + 5 D JK9 JK1 YKF51-5054 2 4 5 5 IN OUT 2 4 30 40 50 60 11 10 9 8 IC1E HD74LS04P R3 6.8K 1 2 CN5 1 1 2 2 3 3 L+ SEND-H L- SEND-H C1 ECEA-KA@ 100/16 R1 68 R2 68 (1/2W) (1/2W) 2 3 4 5 6 IC1C 2 1 + 5 D 13 12 IC1F HD74LS04P 1SS133 D1 D2 1 2 R6 1K C3 1 2 4 JK2 Damper 4 4 5 5 6 6 7 7 R+ RETURN-H R+ SEND-H 100/16 1 7 8 9 RES C5 0.1 1 2 5 6 IC1A HD74LS04P 3 4 3 IC1B Q1 DTA114ES 12 14 15 R7 220 22 24 25 D + 5 D HD74LS04P 1SS133 D DD@ 0.01 D D HLJ7101-01-3010 To JACK BOARD CN3 & Speaker L IL-T-7P A JK10 YKB21-5078 DD@ D HD74LS04P HD74LS04P R8 220 R10 120 R11 100 D4 1SS133 1 2 D D HD74LS04P IC1G 14 7 C4 DD@ 0.1 R9 6.8K 1SS133 D3 1 2 R14 2 4 JK3 2 3 4 5 6 MIDI OUT + 5 D + 5 D 8 5 2 3 IC2 PC910 D 1SS133 D5 1 2 1K C8 DD@ 0.01 1 HLJ7101-01-3010 Soft 1 7 8 9 MIDI IN R17 1K C9 DD@ 0.1 7 6 D D D C10 DD@ 0.1 YKB21-5078 CN2 D D PHONES BOARD To MAIN BOARD CN2 7 C11 ECA-M@ 3.3/16 R18 820 R20 R21 2SC2878A 3 1 Q2 R19 680 C12 1 2 4 JK7 OUTPUT L/MONO 7P-SAN JK5 D R22 68K 1K DD@ 330P HLJ7101-01-3010 INPUT L/MONO HLJ7101-01-3010 1 2 4 C13 DD@ 100 INPUT L R23 68K 2 4 JK6 R R JK4 2 4 1 HLJ7101-01-3010 HLJ7101-01-3010 1 C18 C17 DD@ 0.1 0.1 CN1 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 POWER AGND 1 1 CN3 To MAIN BOARD CN8 C26 L- SEND R+ SEND L+ SEND R+ RETURN 2 2 3 3 4 4 5 5 To PHONES BOARD CN5 XPD-IN IL-S-5P-S2T2-EF 51048-1100 C41 1 1 2 2 CN4 To SPEAKER R B2B-XH-AM DD@ 0.1 4 5 D A9 D ECA-M@ 33/16 UPC4570HA 1 2 3 4 TER1 R64 68K D10 1SR139-@ 400 1 2 R63 3.3K 1 2 D14 3 1 2 R62 10K Q8 2SC1815GR 3 1 2 M1698 TER2 AMP POWER IC6 PQ05RD11 IN 1 OUT 2 + 5 D Q5 Pre-SK 1SS133 DTC114ES 1 2 3 4 M1698 Pre-SK ECQB@ 0.1 C54 OE 4 GND 3 C55 DD@ 0.1 C56 ECA-M@ 10/16 D D12 1SR139-@ 400 1 2 D + A9 DC-IN JK8 2 1 3 C57 DD@ 0.1 1 2 FL1 4 3 DC-IN C58 DD@ 0.1 1 2 SW1A SDKLA1-B D13 MA7D49 1 2 C59 R65 1K 1 2 Q7 2SD667C C60 C61 D HEC2305-01-250 PLT1R53C SW1B SDKLA1-B ECA-M@ 1000/16 3 C62 ECA-M@ 100/16 DD@ 0.1 ECA-M@ 100/16 10 20 20 C7 100/16 ECEA-KA@ RR 11 65 66 88 (( 11 // 22 WW )) 1 2 3 4 5 6 2 3 SOFT 4 DAMPER 5 AVSS 6 MIDI OUT 7 AGND 2 R25 680 R28 3 Q3 C15 1 1K 2SC2878A DD@ 330P AGND 2 R25 R28 3 Q3 1 1K 2SC2 2 330P AGND R26 68K R29 INPUT R C16 100 SIGNAL L IC3A 18 15 16 17 AGND R44 68K A+9V SIGNAL R C3433P DD@ R45 10K 6 +- M52I 1C 84 A7B R51 5 L 1K ECQV@ 820 AGND C660.82 R70 ECQV@ 820 OUTPUT R C39 R71 E 3C 3A /1-M 6@ 1K C607.082 R72680 7 - C29 R40 ECQB@ 1K LA4705 4700P C32 1 8 9 10 1/50 C33 ECA-M@ ECA-M@ 1000/16 IC3B LA4705 14 R50 C40 0.68 7 13 4.7K ECQV@ 4 12 C30 2.2 0.1 ECQB@ C35 ECQB@ 0.1 R47 2.2C37 0.1 ECQB C42 ECQB 0.1 R55 1000/1 @ @ ECA-M@ 1SS133 C46 33/16 R56 10K 1 ECA-M@ D9 2 1SS133 R57 68K 1 A+4.5V R59 8 C DD5 @1 - IC4C C52 0.1 + M5218AL R60 100 2 3 R61 10K 53 CA-M@ 1