LK-125
– 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)
9 V
DC IN
(J201)
POWER AMP PCB (M820-PSA1)
MAIN PCB
(M821-MDA1)
BUTTONS
VOLUME
(SW202)
POWER
SWITCH
(SW201)
POWER OFF
CIRCUIT
Q201
MPU
IC1
BUTTONS
KI0S~KI7S,
KO8S~KO11S
RESET
RESET
A0~A2
DB0~DB3
DB4~DB7
CN202 (-)
CN203 (+)
BATTERY
Summary of Contents for LK-125
Page 1: ...LK 125 SEP 2010 LK 125 Ver 2 Jan 2012 ELECTRONIC KEYBOARD...
Page 7: ...LK 125 5 PRINTED CIRCUIT BOARDS Main PCB M821 MDA1 Power Amp PCB M820 PSA1...
Page 30: ...LK 125 28 Keyboard LED PCB M821 LDA1 to LDA2 CN503 to LD3M JG...
Page 31: ...LK 125 29 Keyboard LED PCB M821 LDA2 to MDA1 CN2 to LD5M JE to LD4M JF to LDA1 CN501...
Page 32: ...LK 125 30 Keyboard LED PCB CSM446 LD3M LD4M LD5M to LDA1 CN502 to LDA2 CN504 to LDA2 CN505...
