SPEAKER
MIC
HANDSET
JK2
Amp
GATE
ARRAY
TONE
DETECT
CPU
LCD
CONT
CN2
KEY
LCD p.c.board
LCD
PANEL
T7453
(16x3)
LCD
CONTROLER
LCD
DRIVER
KEY
x1
PI
NI
C0~C5
R0~R9
4MHz
CK2K
SW301
JOG SW
3AP
2AP
LED
DRIVING
Q3~Q12
Q13~Q18
LED
D100~130
+5V
RESET
HOOK SW
x2
12.288
MHz
x1
+5V
Main p.c.board
DATA
COMMUNI-
CATION
IC11,Q1,Q2
DC-DC
CONVERTER
T1
POWER REGULATOR
D1
+ ~
- ~
+5V
-5V
16.384
MHz
RX
1AP
TX
RX
TEL JACK
JK1
PBX
TX
INT,
RD,WT,
A0,A1,
D0~D3
INT,
RD,WT,ALE,
D5~D7
RR,RD,RB
RR,RD,RB
IC2(TEL Communication LSI)
CODEC (D A/A D)
SP-Phone CIRCUIT
HANDSET CIRCUIT
TONE GENELATOR
DPITS
communi
-cation
LED
Control
JOG SW
Control
Содержание KX-T7453
Страница 7: ...5 IC DATA 5 1 IC1 7 ...
Страница 10: ...10 ...
Страница 15: ...15 ...
Страница 21: ...The reset signal is negledted 21 ...
Страница 26: ...8 2 THE LCD DOES NOT OPERATE 26 ...
Страница 28: ...8 5 SPEAKER PHONE TROUBLE 8 6 TONE DIAL TROUBLE 8 7 HANDSET TROUBLE 28 ...
Страница 29: ...9 TERMINAL GUIDE OF ICS TRANSISTORS AND DIODES 29 ...
Страница 33: ...13 ACCESSORIES AND PACKING MATERIALS 33 ...
Страница 34: ...14 REPLACEMENT PARTS LIST Note 1 The marking RTL indicates that the Retention Time is limited for this item 34 ...
Страница 39: ... 39 ...
Страница 41: ...41 ...
Страница 43: ...43 ...
Страница 48: ...1 5 2 6 3 7 4 8 ...
Страница 49: ...9 13 10 14 11 15 12 16 ...
Страница 50: ...17 21 18 22 19 23 20 24 ...
Страница 51: ...33 34 35 36 25 32 ...
Страница 57: ...SW301 CN301 1 2 3 ...