Sylvania 6509DD Service Manual page 26

11. H f o Adjustment
Purpose: To get correct horizontal frequency.
Symptom of Misadjustment: If H f 0 adjustment is in
correct, skew distortion will appear on the screen.
Test Point Adj. Point
CH o / p button
R583
["H-ADJ"] MODE
Tape M. EQ.
Frequency
---
Counter
Note: R583 --- HV/DC Power Supply CBA
Use Service remote control unit.
1. Connect Frequency Counter to R583 and ground.
2. Set the unit to the VIDEO mode which is located be-
fore CH2 and no input is necessary. Enter the Ser-
vice mode. (See page 1-7-1)
3. Operate the unit for at least 20 minutes.
4. Press "2" button on the Service remote control unit
and select H-ADJ Mode. (By pressing "2" button the
display will change from TV AGC to H-ADJ.)
5. Press "CH o / p" button on the Service remote con-
trol unit so that the display will change "0" ~ "7." At
this moment, Choose display one of them from "0"
~ "7" when the Frequency Counter shows 15.734
kHz±300Hz or closer.
6. Turn the power off and on again. (Main Power but-
ton on the TV unit.)
Mode Input
---
Spec.
15.734kHz±300Hz
1-7-6
12. Y DL Time/Y SW LPF
Adjustment
Purpose: To get minimum leakage of the color signal
carrier.
Symptom of Misadjustment: If Y DL Time Adjust-
ment is incorrect, stripes will appear on the screen.
1. Enter the Service Mode. (See page 1-7-1.)
2. Y DL Time Adjustment: Press "0" button on the
service remote control unit twice to show "D-T" on
the display.
Y SW LPF Adjustment: Press "0" button on the
service remote control unit four times to show
"Y SW" on the display.
3. Y DL Time Adjustment: Select "2" by pressing
"CH o / p" buttons on the service remote control
to enter Y DL Time Adjustment mode.
Y SW LPF Adjustment: Select "1" by pressing
"CH o / p" buttons on the service remote control
to enter Y SW LPF Adjustment mode.
4. If needed, perform the following.
C-TRAP Adjustment (Factory mode)
"0"
button
C-TRP 0
"0" button
Y DL Time Adj TV Adjustment
D-T TV 0
"0" button
Y DL Time Adj EXT/PB Adjustment
D-T EXT 0
"0" button
Y SW LPF Adjustment
Y SW 0
CH
button
C-TRP 1
CH
button
CH
button
D-T TV 1
CH
button
CH
button
D-T EXT 1
CH
button
CH
button
Y SW 1
CH
button
Fig. 5
TD001EA