Sony SVBK-170P User manual

0)
yr
4
a
COMPONENT OUTPUT BOARD
SVBK-170P
SERVICE MANUAL
1st Edition

TABLE OF CONTENTS
SECTION 1 OPERATING INSTRUCTION
SECTION 2 SERVICE OVERVIEW
3-1. NOTES ON SPARE PARTS Sed eererreseecescsces 2-1
2-1-1. Notes on Spare Parts Se eeereecresccsecccccene 2-1
2-1-2. Replacement Procedure for Chip Parts *-*+*- 2-1
SECTION 3 ELECTRICAL ALIGNMENT
3-1. REFOSC ADJUSTMENT cetresssestsesttseresese 3-2
3-2. HUE ADJUSTMENT crerrtsteesteressecseceeeeees 3-2
3-2-1. B-Y HUE ADJUSTMENT ccrreesseetreeeees 3-2
3.2-2. R-Y HUE ADJUSTMENT cvvvreesseeseeeees 3-3
3-3. Y OUTPUT LEVEL ADJUSTMENT ***°"*-*- 3-3
3-4. R-Y OUTPUT LEVEL ADJUSTMENT °:**:--*- 3-4
3-5. B-Y OUTPUT LEVEL ADJUSTMENT °::-:---- 3-4
SECTION4 BLOCK DIAGRAM
SECTIONS SCHEMATIC DIAGRAM AND
BOARD LAYOUT
DEC-75 Board ctccececsresssessseseceeeeeseneeeseeeseeseees
SECTION 6 SEMICONDUCTOR PIN
ASSIGNMENTS
SECTION7 SPARE PARTS
7-1. NOTES ON SPARE PARTS
7-1-1. Notes on Spare Parts cerreerceeccecerceeeeeerereres
9-2, EXPLODED VIEW crereessssreeceeeceresraeeeeceeeenes
7-3, ELECTRICAL PARTS LIST srerssssrrscrsesseseseseees

SECTION 1
o. 6 § GC
4
zo oE oc
‘ore =
8a
n Oo
QE
= 8
ri
suryo oz ‘d-dA 10 :A-€
sumo $1 ‘d-dA L0:A-U
aatyesau
ouds
‘suryo
of
‘d-da
OF
SA
7A
(aa
LH
%
001
‘di
Las
NON
‘5
%
OOF
WH)
feusis
A-
“A-a
‘A
TV¥d
sumyo cz ‘d-da £:0:4-4
sumo cz ‘d-dA 1:0:A-U
eaneseu ouds ‘swyo ¢z ‘d-da OI SA ‘A
(day LH % O01 “dN LAS
SLED
%
SLIM
ULI]
WVOV
LAE
aqp
0)
SuTJOJUOD)
Feusis
A-g
‘A-Y
‘A
OSIN
andyno
capt,
qsing d-da ¢0:D
d-da
O'1
SAZA
“30n)0u
aga
LHM
%
001
“da
Jno
asueyo
o7
alqns
are
suonestyioeds
pue
usisaq]
LAS
NON
°D
%
OOT
9M
d0096/009S-dAS
JO dOO8S/008S-OAS PP wWosy peusis D/A
(1) suononysur SunesedO Vd
(1)
preog
94)
BuLmMdes
Joy
MaDS
ysinq
d-da
9827'0
:D
pattddns
sariossacoy
d-da
O'1
SAtA
(20
2p)
8
O21
“xosddy
sseW
ATA
LHM
%
001
“dn
(sayoul
ze/,
x
tf,
#
X
L)
JAS
%
$'L
‘AD
%
SLUM
J009S/009S-dAS
(pry)
ulul
OZ
X
SOI
X
LLT
suorsuauliq
JO
{008S/008S-OAS
OM
Woyy
[eUsIs
D/A
MSE OSIN
uonduinsuos
Jamog
yndut
oapt,,
suonesipiseds
“maaos
parddns
aq
Sutsn
preog
ay)
aindes
pure
‘payoo]
st
|
i
[nun
Jake]dyrapsosay
ayy
Jo
y0[s
uorNdo
a I
OWT
PIEOQ
OLI-AGAS
aM
Uosut
AfTny
ra
‘rahe
Aepiooay
atp
wos
foued
doy
a
gored
|
‘igfeap
AUOS
MOA
J[NSUOD
*PILOG
OLI-MGAS
AU}
Jo
uouelpersur
Joy
*sfapow
[Te
01
UouWOD
st
aInpasoid
UONeYeIsut
a1
“Japsooar
d008S/008S-OAS
OU
MOYs
SUOHENSHITE
SUIMOFOS
ay
eOUIS
uone]e}Su]
*jeued
do)
ay
aoejdoy
¢
UORET|E Su]
“sakefdjsapsooal aq) Jo 10s uondo ay ur preog sip [Teisut 01 paau A[uO NOK ‘(sIO}/aUUOD ON €) SfeuIwey
indjno
juavoduros
ayy
sey
JoAv[ds1apsooal
ay)
dui
«
“WeULO}
WV
OVLA
RP
O}
suLOJUOS
ToT
“(A-@
‘AU
SA)
Pudis
oapta
juauoduios
ay)
ovr
Jake
Aapiooal
ayt
WOIY
Idyno
PLUSIs OaptA D/A OY)
SUSAUOD
IT
&
:Burmoyjoy
ay)
are
preog
sit
Jo
samyeay
ureuws
at],
“Sunipa
gjo1
g/V
10J
wayshs
Surptpe
oapia
juauoduios
8
Ul
QoINOS
fEUBIS
&
SE
pasn
aq
Med
JaXe[d/Japsooar
ayy
‘aloyazaqy,
“ayqissod
st
yndyno
yeusis
oapra
juauoduiod
8
‘Jakejdaplosal
agi
Ul
payfelsul
st
prog
sim
wag
AY
‘wokelg
anassesoapla
AUOS
d009S/009S-dAS
ep
pue
Japrosey
anasseovapt,
AUOS
4OO8S/008S-OAS
AU}
10]
preog
Feuondo
ue
se
poudtsap
si
prog
inding
1auedwoD
OL
I-MGAS
ALL
“aouazayal ainny JOy yf ure@I pue Apysnosog)
yenuetu
sip
pear
aseayd
‘yun
ay)
Bunesado
asojaq
usy6ug
uoHnonpo.jU]
1-1

2-1.
SECTION 2
SERVICE OVERVIEW
NOTES ON SPARE PARTS
2-1-1. Notes on Spare Parts
Standardization of Parts
Spare parts supplies form Sony Parts Center may not be
always identical with the parts which actually in use due
to “accommodating the improved parts and/or
engineering changes” or “standardization of genuine
parts”.
This manual’s exploded views and electrical spare parts
list are indicating the part numbers of “the standardized
genuine parts at present.”
Stock of Parts
Parts marked with “o” in SP (Supply code) column of the
spare parts list are not normally required for routine
service work. Orders for parts marked with “o” will be
processed, but allow for additional delivery time.
Units for Capacitors, Inductors and Resistors
The following units are assumed in schematic diagrams,
electrical parts list and exploded views unless otherwise
specified:
Capacitors : uF in schematic diagram
: F of pF in schematic diagram
Resistors : Q
2-1-2. Replacement Procedure for Chip Parts
Required Tools
Soldering iron : 20 W
If possible, use a soldering iron tip heat-
controller at 270 + 10°C.
Braided wire : SOLDER TAUL or equivalent
Sony part No. 7-641-300-81
Solder : 0.6 mm dia. is recommended.
Tweezers
Soldering Conditions
Soldering iron temperature : 270 + 10°C.
Soldering time: less than two seconds per a pin.
CAPACITOR RESISTOR TRANSISTOR
DIODE
<S"
Terminal Terminal Terminal
e Resistor and Capacitor Replacement
1. Place the soldering iron tip onto the chin part and heat it
up until the solder is melted. When the solder is melted,
slide the chip part aside.
2. Make sure that there is no pattern peeling, damage and /
or bridges around the desoldering positions.
3. After removing the chip part, presolder the area, in which
the new chip part is to be placed, with a thin layer of
solder.
4. Place new chip part in the desired position and solder
both ends.
Once a chip part has been removed never use it again.
2-1

IIHT
e Transistor and Diode Replacement
1.
2.
3.
Cut the terminals of the chip part with a nipper.
Remove the cut leads.
Make sure that there is no pattern peeling, damage and/
or bridges around the desoldering positions.
After removing the chip part, presolder the area, in which
the new chip part is to be placed, with a thin layer of
solder.
Place new chip part in the desired position and solder the
terminals.
Once a chip part has been removed never use it again.
e IC Replacement
1.
Using the desoldering wire, “SOLDER TAUL” Sony Part
No. 7-641-300-81, remove the solder around the pins of
the IC-chip to be removed.
While heating up the pins, remove the pins one by one
using sharp-pointed tweezers.
Make sure that there is no pattern peeling, damage and/
or bridges around the desoldering positions.
After removing the chip part, presolder the area, in which
the new chip part is to be placed, with a thin layer of
solder.
Place new chip part in the desired position and solder the
pins.
Once a chip part has been removed never use it again.
2-2

SECTION 3
ELECTRICAL ALIGNMENT
{Equipment Required]
e Videocassette Recorder/Videocassette Player(SVO-5800P/SVP-5600P)
* Oscilloscope(TEKTRONIX 2445B/150 MHz or more)
« Frequency Counter(ADVANTEST TR5821AK)
« Composite Signal Generator(TSG-131)
¢ VH-247 Extension Board(SONY Parts No. J-6382-470-A)
[Note] |
When perform electrical alignment, need the extension board. (Connect the extension board
after turn the power off.)
[Connecton]
RV201 RV403
1 4
£401 g ote201 9 O°Vv40!
TPIOL @tp3q1 TP40!
THROUGH
OFF
oy EXT IN
hy e THROUGH
e
S VIDEO INPUT
CONNECTOR ‘s ADJ
DEC-75
foe |
OQ
TSG-131
VIDEOCASSETTE RECORDER COMPOSITE SIGNAL GENERATOR
VIOEOCASSETTE PLAYER
SVO-5800P/SVP-5600P
TTS ETHEL

3-1. REF OSC ADJUSTMENT
Machine
condition
for
adjustment
Specifications
|
Adjustments
e VIDEO IN : no signa! TP401/DEC-75(D-2) @ CV401/DEC-75(D-1)
¢ STOP(E-E) mode
«
Connect
the
frequency
counter
to
4433619
+
5
Hz
TP401(D-2)
through
an
oscilloscope.
© S1/VH-247 : OFF
3-2. HUE ADJUSTMENT
3-2-1. B-Y HUE ADJUSTMENT
Machine condition for adjustment Specifications | Adjustments |
¢ S Video Input Connector/VH-247 TP301(B-2) @ RV403/DEC-75(C-1)
: 75% COLOR BARS t
¢ S1/VH-247 : EXT IN
S2/VH-247 : ADJ
S3/VH-247 : ADJ
S4/VH-247 : ADJ
No level difference (each 1H signals)
(AS10mvV)
3-2

3-2-2. R-Y HUE ADJUSTMENT
Machine condition for adjustment Specifications | Adjustments |
e S Video Input Connector/VH-247 TP201(B-2) @ CV402/DEC-75(D-3)
: 75% COLOR BARS
¢ S1/VH-247 : EXT IN
S2/VH-247 : ADJ
S3/VH-247 : ADJ
S4/VH-247 : ADJ
No level difference (each 1H signals)
(AS10mV)
3-3. Y OUTPUT LEVEL ADJUSTMENT
e S Video Input Connector/VH-247
: 100% COLOR BARS
© SIVH-247 : EXT IN
S2/VH-247 : ADJ
S3/VH-247 : ADJ
S4/VH-247 : ADJ
A= 1.025+ 0.02 Vp-p

TTT
3-4. R-Y OUTPUT LEVEL ADJUSTMENT
Machine condition for adjustment Specifications Adjustments
e S$ Video Input Connector/VH-247 TP201(B-1) @ RV201/DEC-75(B-1)
: 100% COLOR BARS
¢ S1MVH-247 : EXT IN
S2VH-247 : ADJ
S3/VH-247 : ADJ
S4NH-247 : ADJ
A=0.715 + 0.014 Vp-p
3-5. B-Y OUTPUT LEVEL ADJUSTMENT
Machine condition for adjustment Specifications . Adjustments
¢ S Video Input Connector/VH-247 TP301(B-2) @ RV301/DEC-75(C-1)
: 100% COLOR BARS
© S1/VH-247 : EXT IN
S2/VH-247 : ADJ
$3/VH-247 : ADJ
S4/VH-247 : ADJ
A=0.715 + 0.014 Vp-p

CHROMA DECODER CHROMA DECODER
SECTION 4
BLOCK DIAGRAM
DEC-75; CHROMA DECODER
NTSC: BUFFER
PAL :PHASE SHIFT
10401 - PAL ONLY
M51271FP
TP401 FSC)
14
! I
\
2
2403
|
| 1
TP301
@-Y OUD
aso1 0301, 302 a303 1c201 @/2), 202 @/2) O
Pal COMPONENT CHROMA 00 IN| CHROMA B-Y 19 LPF, TRAP DELAY B-Y Bey out CP246 603-2
VA148,
502-28
BUFFER
“
BECODE
‘
AMP
RV301
B-Y OUTPUT LEVEL
| 1P201 :
R-Y oun
0201, 202 0203 10201 172), 202 072 O
- y cNSO1
7 LPF, TRAP DELAY nee Ary OUT 5B | cp24e, 603-4
! {
RV201
BURST R-Y OUTPUT LEVEL
MUTE
PULSE GEN
10410
! aio! |
cNg01 REG +5.9V
COMPONENT Y 00_ IN Y
val4e8, 502-18 | 1B | BUFFER
10411 1
SW REG 1005-4
SW REG 1005-4
SW REG 1005-4
[1 SB] SW REG 1005-4
-——fi4a
Peal
pmo ES]
1c403
BURST
MUTE -5V
PULSE GEN
HALF H
KILLER
TP403
{BURST MUTE PULSE)
TPIO1
YY oun
FLIO1 Q103, 104, 105 1C101 O
CNSO1
3 7 Y OUT
LPF BELAY he CP2ke O36
1
RV1O1
Y OUTPUT LEVEL
1
DEC-75
SVBK-170/170P (1)