AN ISOLATIONTRANSFORMER SHOULD BE USED DURING ANY
SERVICE TO AVOID POSSIBLE SHOCK HAZARD, -BECAUSE OF
LIVE CHASSIS.
THE CHASSIS OF THIS RECEIVER IS DIRECTLY CONNECTED TO
THE AC POWER LINE.
SAFETY-RELATED COMPONENT WARNING !!
COMPONENTS IDENTIFIED BY SHADING AND MARK A ON THE
SCHEMATIC DIAGRAMS, EXPLODED VIEWS AND IN THE PARTS
LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE
COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS
APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY. CIRCUIT ADJUSTMENTS THAT ARE
CRITICAL TO SAFE OPERATION ARE IDENTIFIED IN THIS
MANUAL. FOLLOW THESE PROCEDURES WHENEVER CRITICAL COMPONENTS ARE REPLACED OR IMPROPER OPERATION IS SUSPECTED.
-2-
AFIN D’EVITER TOUT RISQUE D’ELECTROCUTION PROVENANT
D’UN CHASSIS SOUS TENSION, UN TRANSFORMATEUR
D’ISOLEMENT DOIT ETRE UTlLlSi LORS DETOUT DlkPANNAGE.
LE
CHkSlS
DECE RlkCEPTEUR ESTDlRECTEMENTRACCORDtl.
A L’ALIMENTATION SECTEUR.
ATTENTION AUX COMPOSANTS RELATIFS ALA
SfkCURITk+!!
LES COMPOSANTS IDENTlFliS PAR UNE TRAME ET PAR UNE
MAPQUE A SUR LES SCHkMAS DE PRINCIPE, LES VUES
EXPLOSiES ET LES LISTES DE PIECES CONT D’UNE
IMPORTANCE CRITIQUE POUR LA
FONCTIONNEMENT. NE LES REMPLACER QUE PAR DES
COMPOSANTSSONY DONT LE NUMkRO DE
DANS LE PRiSENT MANUEL OU DANS DES SUPPLiMENTS
PUBLIeS PAR SONY. LES ReGLAGES DE CIRCUIT DONT
L’IMPORTANCE EST CRITIQUE POUR LA
FONCTIONNEMENT SONT IDENTIFIES DANS LE
MANUEL. SUIVRE CES PROCiDURES LORS DE CHAQUE
REMPLACEMENT DE COMPOSANTS CRITIQUES, OU
LORSQU’UN MAUVAIS FONCTIONNEMENT EST SUSPECTi.
safety checks before releasing the set to the customer:
1.
Check the area of your repair for unsoldered or poorly-soldered
connections. Check the entire board surface for solder splashes
and bridges.
2.
Check the interboard wiring to ensure that no wires are “pinched”
or contact high-wattage resistors.
3.
Check that all control knobs, shields, covers, ground straps, and
mounting hardware have been replaced. Be absolutely certain that
you have replaced all the insulators.
4.
Look for unauthorizedreplacement parts, particularly transistors,
that were installed during a previous repair Point them out to the
customer and recommend their replacement.
5.
Look for parts which, though functioning, show obvious signs of
deterioration. Point them out to the customer and recommend
their replacement.
6.
Check the line cord for cracks and abrasion. Recommend the
replacement of any such line cord to the customer.
7.
Check the condition of the monopole antenna (if any).
Make sure the end is not broken off, and has the plastic cap on it.
Point out the danger of impalement on a broken antenna to the
customer, and recommend the antenna’s replacement.
8.
Check the B+ and HV to see they are at the values specified. Make
sure your instruments are accurate; be suspicious of your HV
meter if sets always have low HV.
LEAKAGE
from all exposed metal parts to any exposed metal part having a return
to chassis, must not exceed 0.5 mA (500
current can be measured by any one of three methods.
1.
2.A battery-operated AC milliammeter. The Data Precision 245
3.Measuring the voltage drop across a resistor by means of a VOM
HOW TO FIND A GOOD EARTH GROUND
retaining screw on most AC outlet boxes is also at earth ground. If the
retaining screw is to be used as your earth-ground, verify that it is at
ground by measuring the resistance between it and a coldwater pipe
with an ohmmeter. The reading should be zero ohms. If a cold-water
pipe is not accessible, connect a 60- 100 watts trouble light (not a neon
lamp) between the hot side of the receptacle and the retaining screw.
Try both slots, if necessary, to locate the hot side of the line, the lamp
should light at normal brilliance if the screw is at ground potential. (See
Fig. B)
The AC leakage from any exposed metal part to earth ground and
microampers).
A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers’ instructions to use these
instruments.
digital multimeter is suitable for this job.
or battery-operated AC voltmeter. The “limit” indication is 0.75
V, so analog meters must have an accurate low-voltage scale. The
Simpson 250 and Sanwa SH-63Trd are examples of a passive
VOM that is suitable. Nearly all battery operated digital multimeters
that have a 2V AC range are suitable. (See Fig. A)
A cold-water pipe is guaranteed earth ground; the cover-plate
Leakage
9.
Check the antenna terminals, metal trim, “metallized” knobs,
screws, and all other exposed metal parts for AC leakage. Check
leakage as described below.
To Exposed Metal
Parts on Set
0.15pF
d-3
Fig. A. Using an AC voltmeter to check AC leakage.
1.5kQ
I-
= Earth Ground
AC
voltmeter
(0.75V)
-3-
Trouble Light
Cold-water Pipe
Fig. B. Checking for earth ground.
l-l.
INTRODUCTING
THE SONY
TRINKRON@‘COLOR
TV
SECTION 1
GENERAL
1-2.
The operating instructions mentioned here are partial abstracts from
the Operating Instruction Manual. The page numbers of the Operating
Instruction Manual remein as in the manual.
LOCATING THE CONTROLS
I
P
KW20V50
\
;c
,
For details, see Ihe
Bar display for volume,
plclure
@@
CURRENT TIME
@@
pages
indicated by
or sound adjustmen
-Q
displq
Ihe
numbered black circles 0.
Channel number display
Main picture input mode
SLEEP, MUTING displays
CHANNEL CAPTION display
a-0,
MTS mode (MAIN, SAP or
MONO) @
@I
a
.__
I
AV input jack door
*
Bullon~
wilh
also localed on the Remote
Commander (pp. 9 -
the same funclion
J-
.+
I
are
11).
S
VIDEO IN jack
cks
VIDEO 1 IN jacks
VIDEO 3 IN jacks
VHF/UHF
antenna terminal
AUDIO OUT jacks
1-3.
USING THE ON-SCREEN MENUS
MUTING button @
TVNIDEO
butIon’-
DISPLAY button 0
CH
GUIDE
butlon
JUMP button
CODE SET bulton
(Pre-PrograTmed
Iunction)
Video operating buttons
a
-
@D----@-
@@-
-
-POWER button’ @ @ 6)
-CABLE POWER button
-0 - 9 buttons
-CHANNEL
-ENTER button @
CH (channel) +I- scan button’
-VOL (volume) +I- button*
-CABLEBOX-TV
GUtDE
directory keys
QOO
l Eultons wilh the same function are
also located on
@
selector
Ihe TV (p. 7).
@
@
@
@
The following ltow
settings. See
For picture quality adjustment
Main menu
@
For sound quality adjustment
hwn menu
For time-related settings
MaIn menuTtME menu
chart
shows the dilferenl levels of on-screen menus that you can use to make various adjustments and
Ihe
indicated pages for
tnstructtok
on
VtDEO
men”
(DO.
32-33,
AUDIO menu (pp. 34-37)
using each feature.
Adjustment
bar
J---l
Adjustment bar
CURRENT TIME SET .%,N” (pp.
+Fj
Use
:
@j@ Extlm
ONlOFF
TIMER
screen
l
EVERY SUN-SAT
12:OOAY
+
-hCH---
(pp. 4b-47)
44-45)
II
the
CABLEBOX-N
CABLEBOX. the Remote Commander is
able to
COnlrOl
the TV. Set
TV
set
wlh
can
“SC
POWER
selector is set lo
a connecled cable
Ihe seleclor
the Remole
Commander (You
bullon a,
to
N
lo conhot Ihe
any case).
box.
not
use : &$I
CHANNEL BLOCK screen (pp. 48-49)
PEVERY
12:OOAY
b
IUse : m Exit@@ I
Exit@
SUN-SAT
-hCH.-e
I
14. CONNECTING OTHER EQUIPMENT
For presetting and other functions
Main menu
MaInmenu
r
VIDEO
AUDIO
TIME
SET UP
rCLOSED CAPTION
SET UP me””
Romoto Commander
To display the main menu
Press MENU.
To return to the previous me””
Press At or V-to select ‘3 MENU.”
Then press RETURN.
To return to the main menu
Repeat the above, until you reach the main menu.
n
to tho normal screen
To ret”
ENU on tlw Remote Commander.
IA
Press
CABLE
OWOFF
semen (p. 17)
AUTO PROGRAM
AUTO PROGRAM
b
screen
(P.
181
CHANNEL ERASEJADD screen (pp. 14-21)
+
Select the channel
CHANNEL
I
CAPTtONlGUlDE screen
CH CAPTION/GUIDE
Use :
@i@ Exit@
S VIDEO OtUOFF screen (p. 28)
SET UP
CABLE: ON
AUTO PROGRAM
CH ERASE/ADD
CH
CAPTION/GUIDE
WS
VIDEO: ON
VIDEO LABEL
WENU
LABEL SCIH” (pp.
bVIDEO1: VIDEO1
VIDE02: VIDEO2
VIDEOJ: VIDEO3
52-54)
(PP.
50-511
Tim
me”“*
dirappenr automallcally II you do “01 press
withln SO seconds.
The menu you canno, select appears I” black.
a
bUttO”
Chapter
1:
Salllnp up, !j
l-5.
WATCHING TV PROGRAMS
Use this lealure to
video equipment you have connecled to theN. For
connecting video equipment, see pp. 22-25.
m
II Ihe N is in TV. VIDEO 2 or VIDEO 3 mode. the S VIDEO display appears in black
end cr,nnol be selected.
Press T”NlDEO lo change lo “,DEO 1 mode.
Press MENU.
The main
1
MENU
Press A+ or V-to select SET UP
2
Q
Press RETURN.
The SET UP men” appears.
RETURN
%
h
v
- (L)
set
S VIDEO lo ON or OFF depending on Ihe kind
menu
I-ppears.
(R)
b
inslruclions
on
----
CLOSED CAPTION
VIDEO
AUDIO
TIME
rSET
UP
CLOSED CAPTION
I
SET UP
@CABLE:
ON
AUTO PROGRAM
CH ERASE/ADD
CH CAPTION/GUIDE
S
VIDEO: ON
”
IDE0
LABEL
3MENU
01
I
75 “d + gc-+ -=J
F
~-
Press POWER on the TV or the Remote Commander lo
TheTIMER/ST,4ND BY rndicalor blinks until Iheprclure appears,
1
POWER
r---j
orPOWER
u
-
turn
the TV on.
b
Turn
the
cable mode on or off lo select Ihe type of channel you want
watch. VHF/UHF or cable N.
2
(Follow the steps in ‘TurningIhe Cable Mode On or
II
‘VIDEO’ or 3 VIDEO’ is displayed an the screen. press theTV or TVNDEO
b”,,O” so
,/la, Ihe channel
Selects channel in one oflhe following two ways:
“umber
appsars.
ON.”
p. 17.)
to
3
To scan Ihe preset channels* in numerical sequence
Press CH
+I-.
*
For
more lnlormalion on preselling
To select a channel directly
Press 0 - 9 and ENTER.
For example, lo select channel 14, press 1,4 and ENTER.
channels.
see
pp:
18-21.
To
relurn
to
lhe
Press MENU.
II you set S VIDEO IO Oh
aulomalkally recelves S video signals
whenever a VCR with S video is connecled
normal screen
Ihe TV
Press A+ or V- to selecl ON or OFF allernalely
Press RETURN.
me
selling is compleled.
SET UP
CABLE: ON
AUTO PROGRAM
CH ERASE/ADD
CH CAPTION/GUIDE
rS
VIDEO: ON
VIDEO LABEL
3MENU
RM-Yl 17
Press VOL c/-lo adjus! the volume.
4
VOL
Press
+ to
To turn off the N
Press POWER on Ihe TV or the Remote Commander again.
Press - lo decrease the volume.
nxrease Ihe volume.
USING CONVENIENT FEATURES
1-6.
Press MUTING.
The display “MUTING’ wi// appear on the screen.
To restore the sound
Press MUTING again. or press VOL
The sleep timer turnsoff the TV automatically after the amount 01 time you
select.
Press SLEEP.
Each lime you press SLEEP, Ihe lime incremena
PO-and WFF‘mode appear In sequence.
SLEEP
The SLEEP display appears oboul one minule belore
the TV
lums
od
To cancel the setllng
Press SLEEP until “OFF’mode appears.
The “SLEEP OFF’display appears /oraboul ,h,ee seco”ds.
OR
Turn Ihe TV off.
The sleep timer selling is cancelled.
Press JUMP once to recall the channel
you were watching previously. Press
JUMP again IO switch back. Use
feature lo keep track of Iwo programs
alternately.
onlyJ.
window
Ihis-
prclure
inpul
alter aboul
mode
three
30: ‘60:
DISPLAY
and
71
71
/--xq
JUMP
8
Press a+ or V-lo select CLOSED CAPTION.
Press A+ or V- lo select closed caption mode.
3
2
64)
v
- (L)
8
b
Select CC1 or CC2 to view Captions.
A Caption is a printed version 01
dialogue or sound efleclsof a
program. (The mode should be set to
CC1 for most programs.)
Select TEXT1 or TEXT2 lo view Texl.
Text
is information lhal is presented
using the hall to lull televiiion screen.
It is usually not related lo the program.
Select CCfrEXT OFF il you do nol want
lo use the CLOSED CAPTION mode.
Press RETURN.
The selling is compleled.
RETURN
Ihe
CLOSED CAPTION
~/TEXT
OFF
~EJl
aa
TEXT1
TEXT2
3MENU
Use
:
@i@ ExllW
CLOSED CAPTION
EzTEXT
OFF
a212
*TEXT1
TEXT2
3MENU
Use : m Exll&#
CLOSED CAPTION
‘EcTEXTOFL
I?32
TEXT1
TEXT2
>MENU
Use : @&IExll@@
‘-1
l-8.
ADJUSTING PICTURE AND SOUND QUALITY
You can adjust the picture (and sound.
(TV.VIDEO 1,
Remote Commander to select the input mode before making the adjustmenls.
These adjustments are retained in memory even when you
you change Iheadjustmenls again.
1
VIDEO 2. VIDEO 3) by pressing NNIDEO on the N or on the
Press MENU.
The
main
menu
appears.
MENU
pp.
34-37) for each input mode
and
,he cursorpoin,s 10 ‘WOEO:
turn
elf the TV until
I
cVlDE0
“TYK”
SET UP
CLOSED CAPTION
Use
:
@ii@
Exll@l ,
Press At
or
V-lo make theadjustment.
4
+
(RI
v
@3
2(RIv
- (LI
9
Press RETURN.
The new sening appears in
the
VIDEO menu.
---I
BRIGHTNESS
Imm-
Brighter
-
Press MENU.
To restore the
Go to the VIDEO menu and press RESET.
All Iheseltings excepl lor PICTURE will be
restored lo the mid-level setting.
1
laclory (mid-level)
selling
RM-Y117
Press RETURN.
The
VIDEO men”
2
RETURN
Press A+ or V- to select the item you want to adjust.
For example. lo adjust the
3
2(R)
v
- (L)
8
Press RETURN.
The
edjwhnen, bar appears.
RETURN
appears.
plclure
brightness, select BRIGHT.
b
COLOR DwRIw--
BRIGHT WIIW”.-”
SHARP
BWW--”
RETURN
73
To adjust other items
Repeal steps 3-4.
: .,.,::.,:.:..:.‘,: ,,,,, “‘,,p,essv:,,o:~. ‘-,
PICTURE
HUE
1
COLORdecrease color intensilylncreasw color intensity