Yamaha DVX-S120 Service Manual page 78

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DVR-S120/NX-P120
DVR-S120 SCHEMATIC DIAGRAM (MAIN 3/3)
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FL DRIVER
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IC221 : LC75712E
FL Display Driver
CG 1 AM1
Ｃ
DI 64 Ａ
ROM 2 AM2
Ｏ Ｌ
Ｎ
Ｎ DC Ａ Ｏ
Ｔ SHIFT REGISTER Ｔ
CL 63 Ｄ
Ｌ
Ｒ Ｃ Ｅ
RAM
Ｏ Ｈ Ａ
Ｔ
Ｌ CG Ｄ
CE 62
Ｃ
RAM Ｒ
Ｈ
Ｉ
Ｖ
Ｅ 35 AM35
Ｒ
36 AA1
ADDRESS ADDRESS AD
VDD
60 37 AA2
REGISTER COUNTER RAM
AA3
38
VSS 57 39 AA4/G16
BLINKCYCLE BLINK
40 AA5/G15
REGISTER GENERATOR
AA6/G14
41
VFL 55
42 AA7/G13
DISPLAY
DISPLAY
43 AA8/G12
REGISTER CONTROL
RES 61 44 G11
G10
45
DUTYCYCLE DUTY
Ｇ
REGISTER GENERATOR Ｄ
Ｅ Ｒ
Ｉ
TEST 56 Ｃ
GRID GRID Ｏ Ｄ
REGISTER CONTROL Ｄ
Ｅ Ｄ
Ｒ
Ｒ
Ｉ
INSTRUCTION
CONTROL Ｖ
DECODER
Ｅ
Ｒ
53 G2
OSCI 59 TIMING
OSC DIVIDER G1
GENERATOR 54
OSCO 58
2 4 9 8 2 9 9
* All voltages are measured with a 10M Ω /V DC electronic volt meter.
* Components having special characteristics are marked Z and
must be replaced with parts having specifications equal to those
originally installed.
* Schematic diagram is subject to change without notice.