Front - Sanyo DC Service Manual

IC BLOCK DIAGRAM (FRONT)
IC251 PPD75306GF-225-3B9 (Tuner & LCD Driveing
Micro Processor)
PIN No.
SIGNAL NAME PORT NAME DESCRIPTION 1/0 CONNECT
1
1
SEG12 S12 Seqment of Liquid Crystal Display
LCD
2 SEG13 S13
Segment of Liquid Crystal Display
LCD
3
SEG14 S14
Segment of Liquid Crystal Display
LCD
4 SEG15 S15 Segment of Liquid Crystal Display LCD
5
SEG16 S16
Segment of Liquid Crystal Display
LCD
6 SEG17 S17
Seqment of L!quid Crystal Display
LCD
7 SEG18 S18 Segment of Liquid Crystal Display
LCD
8 SEG19
S19
Seqment of Liquid Crystal Display
LCD
9 SEG20 S20
Segment
of Liquid Crystal Display LCD
10
SEG21 S21
Seqment of Liquid Crystal Display
LCD
11 SEG22 S22 Segment of Liquid Crystal Display
LCD
12 SEG23 S23 Segment of Liquid Crystal Display LCD
13 SEG24 S24/BPO Seqrnent of Liquid Crystal Display LCD
14 SEG25 S25/BPl
Segment of Liquid Crystal Display
LCD
15 SEG26 S26/BP2
Segment of Liquid Crystal Display
LCD
16
SEG27
S271BP3
Seqrnent of Liquid Crystal Display
LCD
17
AUTO
S28/BP4 Auto Tuning Signal
ACTIVE : HIGH LEVEL o TUNER
18 NC S29/BP5 Not Used (Open) o OPEN
19 NC S30/BP6 Not Used
(Open)
o OPEN
20 NC S31 /BP7 Not Used (Open)
o
OPEN
21
COM O
COMO
Common of Liquid Crystal Display
LCD
22
COM 1
COM1
Common of Liquid Crystal Display
LCD
23 COM 2 COM2
Common
of Liquid Crystal Display
LCD
24 COM 3 COM3 Common of Liquid Crystal Display
LCD
25 BIAS
BIAS
Bias of Liquid Crystal
Display I
26 VLCO
v, <~
Power Supply for Drive of Liquid Crystal Display
27 VLC1 v, r', Power Supply f
t
-------- ~r. ,. v.- . ..-
?Cl
i STFP
I Purl I
AM 'iton <oloctinn
I 28
'or Orive of Liquid Crystal Display
I VLC2
i v, -. I
Pnwpr
<I)nnlv for ~riup of Liquid Crystal Display
I
--- .-. ..-
1 . . . ..-y - .-..-..."..
./<bf Z
(Vnn)/ 10kHz (V$$)
I TUNER
?0 I
<T I Pfll KT <inmal ACTIVE : LOW LEVEL
I TUNER
51 I >U I r4z
I
>u
>Iqnai
ACTWE : LOW LEVEL
I TUNER
32 I NC I P43 I Not Used (Ground)
I v$~
33 Vss V<5 Ground
34 CE (S) P50 Data Signal from LM7001 (For S Series)
o TUNER
35 CLK (SJ
PSI Data Sional from LM7f)01 (For S Series) o TUNER
A
. . . . .
ii i
'- '-'
Do K)
I P<? I
~ata <innal from I M7CM
J" , !.s
I ,
"",,,.,-.
39 ] SCK
I PO1 /SCK
- - \-.
--- ----- ,., -,. .", , ,-, .,, " .)1
( For S Series)
o TUNER
ii
I MONO (S) I P53
Compulsion Monaural (For S Series)
ACTIVE : HIGH LEVEL
o TUNER
2Q Nr Don / lhl-rA
Not Used (Ground)
I V<$
Clock Signal In from Main Micro Processor (PPD651 17)
I MAIN ,uCON
Not Used (Ground)
v<<
I al I <1 I rmalcll<Rl
Data In from Main Micro Processor (PPD651 17)
I MAIN pCON
Not Used (Ground)
I V5<
I
40 I NC I
P02/SO/SBO
.." . 1 !"-r-. #"-.
42 ~ NC
I PIO/lNTO
43 I NC t Pll /lNT1
Not Used (Ground)
I
v<<
44 NC P12/lNT2
Not Used (Ground)
I v~~
45 NC
P13/TIO Not Used (Ground)
I
v<<
46 WIDE
P2OIPTIOO Select $ional for AM $iqnal
Type
Wide
(H IGH)/ Narrow (LOW)
o
TUNER
---- .-,
.- ..-. . . . . . . . .- .,.- S Series)
ACTIVE : HIGH LEVEL o
TUNER
48 I MUTE I P22/PCL I Tuner Mute Signal ACTIVE : HIGH LEVEL
o
TUNER
&a RI I<v
D>21nl17
I
Busy Signal Out to Main Micro Process
I
_--.. -. . -.
47
I Pcxl (f) 1P;;"" '- I Tllnpr PrIw Pr <innal (Fnr
-< ,
-"~m
1
r
L<, .J" L
49
I BUSY
I P23/BUZ
50 I $0
. -----
.r —--
1 P?L-L/lC-nc[ I Initial Spt for ll~pr = Cnl, ntrv (OnOn or Gro!lnrl)
or (PPD651 17)
o
MAIN /JCON
f~v~crnal Out to Main Micro Processor (,,PD651 17)
o MAIN ,uCON
1
$
------- -- ----- ---- ---- .. . . ,----- -------- ,
ii ii
P31 /SYNC Initial Set for User = Country (Open or Ground)
I
52 S2
P32
Initial Set for User = Country (Open
or
Ground)
I
53 S3 (FM MUTE) P33 Select Signal for FM Auto Mute
I
5a
SET (Open) / NOT (V~$)
Vnn v . .
Pnwer ~tjnnlv + <V
v . .
I 55 t
NC
I XT1 I Nnt I I<oA (Grn!, ncil (
I
-- ..- . . . .
..". . . . .
,- .--..-,
3SC X'tal Terminal for Main Clock
v~$
56 NC
XT2
Not Used (Open) OSC X'tal Terminal for Main Clock
o
57 NC NC
Non Connection
58
xl xl X'tal In (4.194304 MHz)
I
,
.. . ..
59 x2
Xo X'tal 0ut(4.194304 MHz)
o
60
S4(12H/24H)
P60 / KRO Select Signal for CLOCK 24H (Open)/ 12H (V$~)
I
I
61
S5 (AM IF)
P61 /KR1 Select Signal for AM IF SET (Ope_n)/ NOT (V$<)
I
TUNER
62 s6(D/s)
P62 I KR2
Select Signal for D & S Series
SET (Open) / NOT (V$~)
I
48
MUTE P22 / PCL Tuner Mute Siqnal
ACTIVE : HIGH LEVEL o
TUNER
63 MONO (D) P63 I KR3 Compulsion Monaural (For D Series)
ACTIVE : HIGH LEVEL o
TUNER
64 DO (D) P70 I KR4 Data Signal from LM7001 (For D Series)
o
TUNER
65
CLK {D)
P71 IKR5 Data Signal from LM7001 (For D Series)
o
TUNER
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