— 2 —
BLOCK DIAGRAM
CPU
MSM 6755B-17
LSI1
Keyboard
Buttons
LCD
LCD Driver
SED1278F0A
LSI3
Reset IC
IC1
Oscillator
X1, Q1
Power Supply Circuit
Q101 ~ Q103, D104
Power Amp.
TA8248K
IC101
Filter (L)
Q104
Filter (R)
Q105
Output
VC
VCC DVDD
APO
MD0 ~ MD7
MA0 ~ MA17
DC + 9 V IN
DB4 ~ DB7
COM1 ~ COM16
SEG1 ~ SEG40
RS
R/W
E
KO8 ~
KO12
KI0 ~ KI6
KO0 ~ KO7
ROM(2M-bit)
UM23C2101M
7384/Q
LSI2
Summary of Contents for CTK-401
Page 11: ...9 PRINTED CIRCUIT BOARDS Main PCB JCM442 MA1M Top View Bottom View 1 2 3 4 5 8 9 6 7...
Page 12: ...11 SCHEMATIC DIAGRAMS Main PCB JCM442 MA1M 6 7 1 9 8 5 4 3 2...
Page 13: ...12 Sub PCB JCM442 MA2M...
Page 14: ...13 Keyboard PCBs KDM4910K KY1M KY2M...
Page 16: ...15 EXPLODED VIEW 18 14 13 15 12 11 19 17 16 10 R 1 R 2 R 3 5 6 8 7 9 4 R 4 R 6 R 5 4 3 1 2...
Page 19: ...MA0600571A...
