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Qls 21TS1020 Service Manual page 11

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b. After TV operate normally, use 3P66SN Latam RC to perform Auto-search or select CH03.
c. Enter factory mode (exact details refer to 3P66SN alignement instruction), use Multimeter FLUKE 87 Ⅲ to
measure at J852 to achieve a reading of 0.25 0 .02 Vrms.
d. Enter factory mode page 7
and R862(CHR) ( effective L, R audio output from TDA9580 BTSC demodulation), Adjust BTSC-L1 to achieve
CHR, CHL at 0.5
e. FLUKE 54200 transmitting colour bar Signal frequency at 61.25MHZ Signal strength at 80dB, Item Test1
under BTSC, BTSC-MOD to set Stereo.
f. Use Dual Trace Oscilloscope, CH1 measures R860 (CHL), CH2 measures R862(CHR).Enter Factory mode
page 7, Select Stereo in BTSC-MODE, adjust BTSC-A1 and BTSC-A2, to achieve the clearest, cleanest, least
interdependent waveforms of 300Hz and 3kHz. Also adjust BTSC-TC, to achieve the best waveform of 300Hz
and 3kHz. (Suggest default value of 4)
g. "Reduce the signal strength of FLUKE 54200 to 30dB, transmitting colour bar, Signal frequency at 61.25MHZ,
BTSC-Stereo, SAP-MOD, audio frequency at L=300Hz, R=3kHZ. Adjust values of BTSC-ST and BTSC-SP while
pressing "SAP" key on the RC, until no detection of Stereo and SAP, then Adjust values of BTSC-ST and
BTSC-SP while pressing "SAP" key on the RC, until proper detection of Stereo and SAP. Final confirmation of
values for BTSC-ST and BTSC-SP."
4.10. Factories parameters of the adjustment
4.10. Factories parameters of the adjustment
Debugging items and directive from the page " 0" to page" 15" consists of 16 items, and a "predetermined
adjustment page" Belows are testing the items specified
(0) Page 0
Service setting
Service setting
Horizontal shift
Horizontal shift
EW Width
EW Width
Vertical Slope
Vertical Slope
Vertical Shift
Vertical Shift
Vertical Amplitude
Vertical Amplitude
S-correction
S-correction
,
in the selection of BTSC-L1, use multimeter FLUKE 87 Ⅲ to measure R860(CHL)
0.02 Vrms.
OSD display
OSD display
HSH
HSH-60
EWW
EWW-60
VSL
VSL-60
VSH
VSH-60
VAM
VAM-60
SC
SC-60
Service Modes
Description
Description
50Hz Horizontal center
60Hz Horizontal center
50Hz EW Width
60Hz EW Width
50Hz Vertical Slope
60Hz Vertical Slope
50Hz Vertical Shift
60Hz Vertical Shift
50Hz Vertical Amplitude
60Hz Vertical Amplitude
50Hz S-correction
60Hz S-correction
3P66
Value
Value
Default
Default
0...63
35
0...63
30
0...63
50
0...63
50
0...63
30
0...63
30
0...63
35
0...63
35
0...63
25
0...63
25
0...63
20
0...63
20
4.
EN 10

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