Roadstar CTV-1450, Service Manual

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PRODUCT : CTV STAGE: TELETEXT CHECKING PCB/ASSY :F.A. CHASSIS :ROA SHEET : 1 OF 1
RAW MATERIAL / CONSUMABLES : JIGS / FIXTURE INSTRUMENTS : PREPARED BY
SR N STOCK NO LOC DESCRIPTION QPS
1 TV SET 1 REMOTE
TELETEXT CHECKING: SELECT COLOUR BAR PATTERN. PRESS "TXT/MIX" KEY ON REMOTE
1 OBSERVE THAT "P100 (INDEX PAGE OF TELETEXT) HAS APPEARED. PRESS "TXT/MIX" KEY AGAIN AND OBSERVE THAT THE TE
2 PAGE HAS SUPERIMPOSED ON THE COLOUR BAR PATTERN. SELECT PAGE "P102" BY USING PROGRAM UP KEY AND OBSERV
3 THAT " *** LARGE CHARACTERS *** " PAGE HAS APPEARED. . PRESS "TV/AV" KEY TO QUIT FROM TELETEXT MODE.
4 SELECT SETTINGS MENU AND CHECK THAT TXT=EAST/WEST " FUNCTION.
5 PRESS "SUB CODE " KEY ON REMOTE & CHECK "DK/I/BG" OPTIONS
PRODUCT : CTV STAGE: NTSC / H.V. CHECKING PCB/ASSY :F.A. Roadstar SHEET : 1 OF 1
RAW MATERIAL / CONSUMABLES : JIGS / FIXTURE INSTRUMENTS : PREPARED BY
SR N STOCK NO LOC DESCRIPTION QPS
1 TV SET 1 REMOTE
2 HV METER CHECKED BY
3 HAND GLOVES
4 BALUN
NTSC CHECK:
1 SELECT COLOUR BAR+CIRCLE PATTERN.
2 SELECT COLOUR SYSTEM=NTSC IN 'SETTINGS ' MENU.
3 SELECT TINT OPTION IN PICTURE MENU. AND VARY ITS VALUE .
4 WHILE TINT VARIATION ,CHECK THAT RED COLOUR IS CHANGING.
5 IF FOUND ANY ABNORMALITY IN CHECKING , PLEASE REJECT THE SET.
H.V. TEST
1 REMOVE THE MAINS CORD FROM PALLET AND INSERT IT IN HV SOCKET.(SPECIALLY PROVIDED)
2 SNAP SPECIAL BALUN INTO TUNER POINT.
3 TOUCH THE HV TERMINAL TO BALUN POINT.
4 PRESS THE TEST /ENABLE BUTTON ON HV TESTER,IF BUZZER OPERATES FOR UNSPECIFIED TIME THEN REJECT THE SET.
5 REMOVE MAINS CORD FROM SOCKET AND INSERT IN PALLET SOCKET.
6 RELEASE THE SET FOR NEXT STAGE.
AFTER CHECKING, MAKE "M-MODE" ON BY PRESSING "SERVICE KEY+DEMO KEY".
SETTING PARAMETER: 1.1KV, 3mA, FOR 3 SEC.
PRODUCT : CTV STAGE: NTSC ALIGNMENTS PCB/ASSY :F.A. Roadstar SHEET : 1 OF 1
RAW MATERIAL / CONSUMABLES : JIGS / FIXTURE INSTRUMENTS : PREPARED BY
SR N STOCK NO LOC DESCRIPTION QPS NTSC PATTERN
1 TV SET 1 GENERATOR
3 SERVICE REMOTE
4 FOR NTSC ALIGNMENTS
1 SELECT NTSC PATTERN .( COLOR BAR+CIRCLE PATTERN )
2 PRESS "MENU+6483" KEYS SEQUENCE TO ACCESS THE MANUFACTURING MODE. THEN PRESS HOTKEY "1" TO ENABLE MENU-1.
1 .HORIZONTAL CENTERING: H-SHIFT
SELECT PARAMETER "H-SHIFT" BY USING CHANNEL DOWN KEY.
ADJUST "H-SHIFT" VALUE BY USING VOLUME UP/DN KEYS SUCH THAT THE PATTERN
IS LOCATED HORIZONTALLY AT CENTRE.
2 VERTICAL LINERITY ADJUSTMENT: V-SLOPE
SELECT "V-SLOPE" & ADJUST IT BY VOLUME UP/DN KEY SUCH THAT EXACTLY THE TOP HALF PORTION OF
RETMA PATTERN IS VISIBLE.
3 VERTICAL RASTER SHIFT: V-SHIFT
SELECT "V-SHIFT" AND ADJUST IT SUCH THAT PATTERN WILL APPEAR AT MECHANICAL
CENTRE OF THE PICTURE TUBE.
4 VERTICAL HEIGHT** V-SIZE
SELECT "V-SIZE" AND ADJUST IT SUCH THAT HEIGHT OF THE LION HEAD PATTERN BECOMES ' 9 - 9'.
ACCEPTABLE RANGE IS 8.9 TO 9.1. ( REFER FIG- )
5 VERTICAL SCROLL V-SC
SELECT "V-SC" AND ADJUST IT SUCH THAT BIG CIRCLE WILL LOOK PERFECT CIRCLE
PRODUCT : CTV STAGE: AV CHECKING PCB/ASSY :F.A. Road Star SHEET : 1 OF 1
RAW MATERIAL / CONSUMABLES : JIGS / FIXTURE INSTRUMENTS : PREPARED BY
SR N STOCK NO LOC DESCRIPTION QPS REMOTE H-SET
1 TV SET 1 MONITOR av out SET
2 AV CORDS CHECKED BY
3 monitor av in tv set
CONNECT THE RF SIGNAL CORD TO TUNNER. SELECT CHANNEL "EU 2CH".
AV IN CHECKING -
1 KEEP MONITOR SET IN TV MODE AND 'TESTING TV SET' IN 'EURO AV' MODE BY USING "TV/AV" KEY ON REMOTE.
2 CHANNEL "EU 2CH" IS SELECTED IN MONITOR TV SET.
3 CONNECT "VIDEO OUT" AND "AUDIO OUT" CORD OF MONITOR SET TO "VIDEO IN " AND "AUDIO IN" JACKS OF TESTING TV SET
4 LISTEN FOR NORMAL SOUND AND PICTURE OF CHANNEL "EU 2CH" PRESENT IN THE "TESTING TV SET" .
5 CHECK THE AUDIO FOR BOTH THE AUDIO IN JACKS.
AV OUT CHECKING:-
1 KEEP MONITOR SET IN 'AV' MODE AND 'TESTING TV SET' IN 'TV' MODE BY USING "TV/AV" KEY ON REMOTE.
2 SELECT SUB BRIGHTNESS PATTERN (EU 2CH) ON TESTING TV SET.
3 CONNECT "VIDEO IN" AND "AUDIO IN" CORD OF MONITOR SET TO "VIDEO OUT " AND "AUDIO OUT" JACKS OF TESTING TV SET
4 LISTEN FOR NORMAL SOUND AND PICTURE OF CHANNEL "EU 2CH" PRESENT IN THE "MONITOR TV SET" .
5 REMOVE THE AV CORDS AFTER TESTING.
CHECK "CD PLAY=ON/OFF" FUNCTION IN SOUND MENU
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