Page 2 - GENERAL; ELECTRICAL
— 2 — CONTENTS Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Circuit Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
Page 3 - BLOCK DIAGRAM
— 3 — Headphone output level (Vrms with 8 Ω load each channel): with key C3 pressed in Pan Flute tone 210 mV ± 20% Output level (Vrms with 47 k Ω load each channel): with key C2 pressed in Pan Flute tone 2000 mV ± 20% Speaker output level (Vrms with 4 Ω load each channel): with key A1 pressed in Pan...
Page 4 - CIRCUIT DESCRIPTION; KEY MATRIX
— 4 — Key Second contact (2) First contact (1) FI KC SI KC0 KC1 KC2 KC3 KC4 KC5 KC6 KC7 FI0 C2 (1) C#2 (1) D2 (1) D#2 (1) E2 (1) F2 (1) F#2 (1) G2 (1) SI0 C2 (2) C#2 (2) D2 (2) D#2 (2) E2 (2) F2 (2) F#2 (2) G2 (2) FI1 G#2 (1) A2 (1) A#2 (1) B2 (1) C3 (1) C#3 (1) D3 (1) D#3 (1) SI1 G#2 (2) A2 (2) A#2...
Page 7 - POWER SUPPLY CIRCUIT
— 7 — Filter Block From DAC To power amplifier Name Voltage For operation of VDD +5 V CPU, Reset IC, Sound source ROM, LED Latches DVDD +5 V Power jack, Photocoupler AVDD +5V DAC, Filter LVDD +5 V LED Drivers VCC +9 V Power amplifier, Pilot lamp VC +9 V Power amplifier Pin No. Terminal In/Out Functi...
Page 8 - LED DRIVING
— 8 — LED Latch IC107 HD74HC373AP LG CPU LSI101 UPD912GF-3BA LVDD LED Latch IC105 HD74HC75AP PLE IC106 BA612 LED Driver LO0 ~LO3 Q111 ~Q118 LED Driver MD0 ~ MD7 La ~ Lg, Lp MD8 ~ MD11 LED DRIVING
Page 9 - MAJOR WAVEFORMS
— 9 — 1 2 3 CH1 CH2 CH3 4 5 6 A 5 ms CH1 CH2 CH3 CH1: 5 V CH2: 5 V CH3: 5 V – – – 7 8 9 A 1 ms CH1 CH2 CH1: 0.2 V CH2: 0.2 V ~ ~ C D E F A 1 ms CH1 CH2 CH1: 0.2 V CH2: 0.2 V ~ ~ CH1 CH2 CH3 0 A B – – – CH1: 5 V CH2: 5 V CH3: 5 V A 2 µ s 0.1 s CH1: CH2: 5 V 5 V CH3: 5 V 50 µ s CH1 CH2 CH3 CH1: CH2: 5...
Page 10 - PCB VIEW AND CHECK POINTS
Page 11 - SCHEMATIC DIAGRAMS
— 11 — SCHEMATIC DIAGRAMS JCM460-MA1M 15 16 5.1 4.5 5.1 8.3 7.6 5.7 5.1 0.7 0.0 8.2 7.5 5.1 5.1 5.7 7.5 5.1 5.7 0.0 5.1 2.3 1.7 1.7 2.3 7 8 9 14 13 2 3 4 5 6 1 10 11 12
Page 13 - EXPLODED VIEW
20 11 10 9 7 6 5 4 3 1 2 9 12 13 14 15 16 17 18 19 17-1 17-2 22 21 23 8 EXPLODED VIEW — 13 —
Page 14 - PARTS LIST
N o t e s : 1 . P r i c e s a n d s p e c i f i c a t i o n s a r e s u b j e c t t o c h a n g e w i t h -o u t p r i o r n o t i c e . 2 . A s f o r s p a r e p a r t s o r d e r a n d s u p p l y , r e f e r t o t h e" G U I D E B O O K f o r S p a r e p a r t s S u p p l y " , p u b l i ...
Page 16 - Description of Capacitors
FOB Japan N Item Code No. Parts Name Specification Q N.R.Yen R Unit Price 14 6922 2850 White key set, DFA M111724-1 4 100 A 15 6922 2750 Black key set, 5-key M111726-2 1 86 A 16 6922 2740 Black key set, 10-key M111726-1 2 120 A N 17 6923 7060 Case M140171*1 1 2,470 C 17-1 6902 6140 Battery spring (-...
Page 17 - Description of Resistors
Description of Resistors A general description of resistors is shown in the following table.The description consists of Type, Value, Rated Wattage and Tolerance.When you need a resistor, please find a substitution in your country by yourselves referring to the description. Note:All resistors are car...