Pioneer SD-P4681, SD-P5181 Schematic
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5.5 TUNER- VIDEO ASSY (4/5)
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Q453 :
INHIBITtoCPU - RESET
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POWER ON
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SCH-5
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TUNER- VIDEO
ASSY
(4/5)
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lnOZI-
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FRONT CONTROL
81 ("SCH-14)
Z - V">
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046Z0468 :
REMOTE SIGNAL
WAVEFORMER
ASSY
3.
Note :
Zene<. diode· MTZJ6J! ,
*
MTZJa8
SO - P5181
TP-46 (R-V)
V range: 1V/div.
H range : 20,usecIdiv.
.......... -........ . : : + ~.
..................... ···;·······~·······t····.}..
•.;.••.••:."h'o .;••••
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':H';"; :·.L·1'1.:.1.
Q
TP-46(G- V)
V
V range: 1V/div.
H
range: 20
K, SO - P4681
<•• ", •• ' •••: ." ...•••••
'.1"v ,c.•.• .: .• ~ •...•...... !.'..~~.;.;.,.~
, "í
'IIL GND
,usec!
div.
..-.....
..•...
.....~..... L
..
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K
,
•••
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.-
f17\
TP-47 ( G )
~ V range: 2V/div.
H ranqe :
..... , .l.l_i_._l ~ ; l J
20
,usecl
div.
•••
••
••
.,.
--
.-
.-
I
TP-47
(B)
V range: 2VIdiv.
H
r~nge : 20usec/div.
:
_
..~~._
: :
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..
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:
:
: : ~ j ~ . ~
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L.
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j
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j ~
j .
:
i
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••••
~
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TP-46 (B-V)
V range: 1V/div.
H
range: 20 ,usec/div.
h.hL.hhL ..
fí6\
\J
1..'::1'
TP-47 (R )
V range: 2V Idiv.
H range: 20 ,usec/div .
.
,.:.
...
_
...
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..~.····t .
····T ~ .
...
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.....
...~..~._~ i·······; ; .
i....•
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:
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Li'
;
GND
i
GND
;
-
~-~
Note:
No.
in SCH-13 .
@
waveform is indicated
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f
....
~,(~~Fr1~fl-~
..~_ ..' i
22
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i_....:...
....L..J....,J
."""'-
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---
'
• Waveformes at TUNER-VIDEO assembly
• Input signal : Color bar
• Picture quality : standard
• Range: DC range (Unless otherwise noted. )
I..
-I,--~'
_S_D_-~_---P_'-5_J1_8_1_-~-K_--:-_-S_-D_--:~P_-~4_6~8_-~_~_K_- --
"
0257 Emitter (Before C. BPF)
V range: 0.5V /div.
H range: 20 tLsec/div.
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TP-41 (C)
V range: SOmV /div.
H range: 20tLsec/div.
_
...
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..
_---_
....
_-:---:--
) i
...
\
--;-._.-.
0284 Emitter (Sync Y In)
V range: 1V/div_
H range: 20 tLsec/div.
.
_
..
_--_._
_._----_
0234 Emitter
V range :-1V/div.
H range : 20tLsec/ div.
...
--_.
..
_---
'
.
__..
0286 Emitter
V range: 2V /div.
H range: 20 tLsec/div.
[····-1.~
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······1···
,
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.....
-
~...._.~..-"'f
·r-·-~·····-r-···T ; 1
······1...__.~__
o
-i
··---1··..···1 ·t······i····"'1
1
llI:';-:;:f~T·~;-:\·i
'-!--+-"r·lo..i-~~'*""'''''"
!_.LL..
.L....
I
TP-13
V range: 2V /div.
H range: 20 tLsec/div.
.....:...._';-_ ...:. ····1'·····-:··__···:·······;······1
~.~~~~~~~~~~~
: + ~ .. _..~ ~--_.. ;
GNO
\-
~
__ G~'
L......•.......
L .
~
~1
t
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TP-05 (Y)
V range: 1V/div.
o
H range: 20 u sec/div.
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;--·...•-·---·~ ·i·..
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__... ;-.... L-.:_..:...-....:... __ ._..-
U3 pln Y
V range: O.SV/div.
H range: 20 zzsec/dlv.
··-·!__-i--.04-~_~·_··_
~ .. !
0283 Emitter
V range: 2V/div.
H range: 5msec/div,
0293 Emitter
V range: 2V /div.
H range: 20 tLsec/div.
.
....~....~....)....)....
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:
~:
······~·······t ~ ~.. -"
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:'.
~Il+rrr~t]lGND
0251 Emitter
V ranqe : 0.2V/div.
H range: 20 zzsec/dlv .
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. SD-P5181-K,
5.2 TUNER- VIDEO ASSY (1/5)
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SD~P468t-K
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8Ã~ff€N'
BLOCK
("SCH - 4)
['OSO-R~-':""~__ ~~~ "--:':'-""" --':-:---' __ ---'-_--:-'"_--'---'__ ~_--',
OSO-GD-
OSo-BD~---':'~-~-~~--:---,-----:-~--:---------
R_DFFD:'=====-~~ ~ __ ~ __ ~~ __ ~~~ ~~
G_DFFD~_~~~ ~~~_,,--:_--,~_~-:-....-~ ~....- ~ ~~....-_
B::DFFC>-
+13.5V<J,
MICRO-
COMPUTER
BLOCK
("SCH - 5)
CLOSIÔD CAPTION " ~
BLOCK (•• SCH-4)
o
PEAK- AC~
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MICRO-
COMPUTER
BLOCK
("SCH -5)
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SHARP~ ' ~
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CONTRAST __
BLK-OUTD-'--~~_--'--'--.
'V-MUTE~>-----------~-t,
IT~""'" ',_
H_BLK
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L
BLK.
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1 2 V _ S,T B •
CPU RESET ~
PENB-~
PINP CL§K'.
PINP DATA , "
- 25 V ' ,_
GNO(C) "~
+25Y , •
MUTE "
DA TA"
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c:>.....,.------;
,+qy---.
GN ':
CLK
3
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0252 : Y- SIGNAL AMP 0258 : VIDEO AMP.
Q257 ,
BUFFER
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1.'"
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00271,0272,:
CONTRAST CONTROL"
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10.0.
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dO
T P - 4 1 C
' CLAMP CORRECTION
Note:
Diode HSS104-02 and zenell
-\(}- HSS104-02
*
MTZJ15
-===
0259:
SYNC TIP 'GAMMA ,
0275,0276 : BUFFER
'~~
o,,,~.
AISS2
1=_ ~
diode
MTZJ15 unless otherwise noted.
==I-'
I
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or-o
53,0260,0267 : BUFF,ER ,
t-~~--_'~'~5.~'--------~--~~------__.
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0261 :,
D~V
.1'1..01
l
TUNER- VIDEO ASSY
• VIDEO BLOCK
w
100 _'"
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0268,0269 :,
GAMMA CORRECTION
to OFF at WHITE PEAK
0270,0284,0285 :
BUFFER
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TP-05
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-+-
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!NHIBIT POWER· OFF
wnen
ARCING
4
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5
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SD-P5181-K, P4681-K
~:2~0~gi:D
01 CPU RESET SIGNAl
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SCH - 5
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A
-
VIOEO BlOCK
("SCH -
0407 :
GRAY COlOR
ON/OFF
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~NU~
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f'
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rnn
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L---+--~-~~~--+-~:---~~BLK-OUT
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r=----,
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040B,0409 :
P IN P ENA8lE'
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r-------~-------C>V,BLK
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r"'·;----{J
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,.,. ~ DA TA
~--L>"C,C_RESET
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CCO
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OSD-B
CL
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ClOSED CAPnON
BLOCK (•• SCH
T_CROSS
8
-4)
c
04BE :
CONTROl VOLTAGE
8UFFER
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I
L
Ode-
MTZJ6.n unless ctnerwíee
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1-~C~ON~V~.~.~C~8~.o~r~r~(~I~:J~)~~==~~R-OFF
;::::G-OFF
(: ---------~ s
"""L/
B- O
FF
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b
'--------{:>A-MUTE
Y!'~s..l~K
TUNER-VIDEO
_1.~__
V-BLK
H-BLK
VOLUME]~~
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õ1A
V -
S T B
~.!
ASSY (4/5)
SCH-'S
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