Casio LK-127 Service Manual & Parts Guide

LK-127
– 2 –
BLOCK AND WIRING DIAGRAM
VD5
VE5
VC
RIGHT
SPEAKER
LEFT
SPEAKER
VE5 VA5 VD5
VD5
VCP
D202
LSP
RSP
VA5
VE5
VD5 VA5 VE5
LCD
VCP
KEYBOARD
PCB
(M800-KYA2)
KEYBOARD LED PCB
(M821-LDA2)
KEYBOARD LED PCB
(CSM446-LD5M)
KEYBOARD LED PCB
(M821-LDA1)
KEYBOARD PCB
(M800-KYA1)
LCD
CONTROLLER
IC3
KEYBOARD LED
CONTROLLER
IC2
POWER
AMPLIFIER
IC201
RESET IC
IC4
POWER SUPPLY
CIRCUIT
Q202, Q203, Q204,
D206, D207,
C225-C229
CN3 (17 pin)
CN201 (17 pin)
CN205
CN206 CN207
CN6
CN8
CN204
LSP+
LSP-
CN9
CN7
CN4
CN5
RSP+
RSP-
CN803 (16 pin)
CN801 (13 pin)
CN802 (13 pin)
CN1 (16 pin) CN2 (16 pin)
CN506 (16 pin) CN503 (12 pin)
CN504 (6 pin) CN504 (6 pin) CN505 (6 pin)
JE (6 pin)
KEYBOARD LED PCB
(CSM446-LD4M)
JF (6 pin)
KEYBOARD LED PCB
(CSM446-LD3M)
JG (6 pin)
CN501 (12 pin)
SI1, SI2, SI4~SI6,
KI7S, SO1~SO6
KI0~KI7 KO0~KO7 LY0~LY7, LX0~LX7
KI4S~KI7S,
KO11S
PHONES/OUTPUT
(J202)
DC 9 V
(J201)
POWER & AMP PCB (M820-PSA1)
MAIN PCB
(M821-MDA1)
BUTTONS
VOLUME
POWER
SWITCH
POWER OFF
CIRCUIT
Q201
MPU
IC1
BUTTONS
KI0S~KI7S,
KO8S~KO11S
RESET
RESET
A0~A2
DB0~DB3
DB4~DB7
CN202 (-)
CN203 (+)
BATTERY

Casio LK-127 Specifications

General

Brand	Casio
Model	LK-127
Category	Electronic Keyboard
Language	English