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CONSOLE PCB
(M628-CNA1)
Speakers
(L)
(R)
MIC
Filter
NJM2068M
IC104
Mic Volume
MAIN PCB
(M628-MDA1)
Keyboard
KEY PCB
(M627-KYA2)
BLOCK DIAGRAM
Phones/
Output
Power AMP
LA4227-E
IC100
Filter
NJM2068M
IC5
Main
Volume
74AHCT
IC5, 6
MPU
ML6763B-NNWA-116
IC12
KI0 ~ KI4
KEY PCB
(M627-KYA1)
AC ADAPTOR
DC 9V
D1
Battery
Power Supply
Q100 ~ Q102
D108
VD5
VA5
VC
VCP
(5.3V)
(5.3V)
(9.0V)
(9.0V)
— 3 —
LCD Controller
ST7066U
IC101
RS
R/W
E
Button
LDB4 ~ 7
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