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4-2. SCHEMATIC DIAGRAM
-— MAIN SECTION — See page 29 for IC Block Diagram.
1
2
3
A
5
6
7
8
9
10
11
12
13
14
45
16
17
18
19
20
21
22
23
[MAIN BOARD]
|
|
oo
I
4.
cd
A
INVERTER
RESET
A
05
SYNT-OUT
MNS
ee)
wes
|
&
C406
[INVERTER
22y
453,
Te EK
6.3V
B
ATT SWITCH
ip = 4702
«2470p = 10k
R329
«C352
C354
=
tk
= 470p
470p
Q401
MERODY
MUTING
33
1C811
]
8000031 ABC RE25
o
B00003T ABC
TEE
3
—
ee
et
SS
Meco
oe a
i=
S|
||.
=o
a
1C104
RC7OLOSA _
99}
Ciogicrio
STC144EK
a
an
es
=
oH
him
fe
ac
eS
ee
ee
|
VOLTAGE CONVERTER
|
[tut Boao)
:
nein
RYIOL
cnzo2}cnio2
1 Q-e-—}
662
ae
ha
O
CNSO03
POWER
rr]
ie
a
cN201 = CNIO!
9
IPE
9000051 DAC RE28
rot
[eT
nae weno [3 |
|
:
ap
—
ie ae ae
Se
Nee
O arte @
a
oe eee Se
ee
ei
-
var bo)
IC107
=
re
ee
ere
AD Fe oe o S
J
0
SARE BWITCHING
-
TP858
|
a+
AGNB (IC803-804/8PIN)
51 8
3
a
28S
tr
sal
7
RES.
|
é
am
[ven ce0s-c007TaFIW | 8
:
Ne
re
ries
PSS
|
y
p a s s [renin ccansrerin [9 |
— | [8 (2 I B 8
ani
|
.
lk
:
aspiin2
DOCOMO
[Ma2 Sfp 8
os
BATT
ie
| 3 ANALOG
IN (ica03) |
|S [ANALOS
IN (C804) |
| & |PpwRo+
(1C803/2P
| 8 [Acne
(1c803-804/13P)|
a
eee
(1C804/6P IN)
ut |
Qs0!
28C2812-L5
Note on Schematic Diagram :
—
@All capacitors are in
wF unless otherwise noted. pF: u uF
5O0WV or less are not indicated except for electrolytics and
R820
10k
8600371 AQC09
PCM-OUT
(1004/1 1P)
a7
c
M
PCM-OUT (10803/11P)
6 3V
ASI
tantalums.
FSX/TSXE_FSR/TSRE
S
bs
@All resistors are in Q and
'% W or less unless otherwise
| 13 TPCM-IN
_(1C803/4P)
a
S
L fort) 9504
860031 180C03
specified
:
hohe
AE
IC811
sate
14 |
1¢803-804/9P
ES
wn
LEVEL DETECTOR
Nas
ets h m4
Pee
okt
'
Fi
2
beet
:
ees
°e
% _ : indicates tolerance.
Note :The components
identified by mark A or dotted line
DRAM
with mark A\ are critical for safety.
Replace only with part number specified.
X2/CLKIN
en
|CSSO
5.2
BUFFER
"1C804
TCM29C16
a
;
eVoliage and waveforms
are de with respect to ground
under
no-signal (detuned) conditions.
nomark
: OFF HOOK
(
) : ON HOOK
e Voltages are taken with a VOM (input impedance 10 MQ).
. Voltage variations
may
be noted
due to normal
production
tolerances.
© Signal path.
> RX
> TX
: bell
: dial pulse
: dial tone
DECODER
Lao!
Cas!
3, 38H
aap
ICato
CXKS864BN~-70L
|
|
'
aTeIAaEK
Tor Ye) 1
Er 1.6
—— SWITCHING
—
1
'
es
>
ES
A
| os
VVVVV
—34—
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