Samsung VP-A50, Service Manual

Page: 66 / 166

Alignment and Adjustment
Samsung Electronics 5-23
1. Y-Emphasis
1) Rec, 100% color bar signal.
2) Pin 13 of IC201 and EVR.
3) Confirm the Ò04 : Y-EmphasisÓ mode by pressing
the ÒZ/MEMO (MODE CHANGE)Ó button of set.
4) Connect an oscilloscope to pin 13 of IC201.
5) Press the ÒWIDE (DATA DOWN)/TELE (DATA
UP)Ó button on remote control so that the pin 13 of
IC201 is 0.5 ± 0.02Vp-p from SYNC tip to peak
level.
6) Be sure to press the ÒDISPLAY (CONFIRM)Ó
button on set or remote control to memorize
setting.
2. Y-FM Carrier Frequency(Hi-8)
1) Rec, no signal input.
2) Pin 41 of IC201 and EVR
3) Confirm the Ò12 : CARRIERÓ mode by pressing the
ÒZ/MEMO (MODE CHANGE)Ó button of set.
4) Connect an oscilloscope to pin 41 of IC201.
5) Press the ÒWIDE (DATA DOWN)/TELE (DATA
UP)Ó button on remote control so that frequency of
pin 41 of IC201 is 6.05 ± 0.2MHz.
6) Be sure to press the ÒDISPLAY (CONFIRM)Ó
button on set or remote control to memorize
setting.
3. Y-FM Carrier Frequency(Normal)
1) Normal Rec, no signal input.
2) Pin 41 of IC201 and EVR
3) Confirm the Ò0D : CARRIERÓ mode by pressing
the ÒZ/MEMO (MODE CHANGE)Ó button of set.
4) Connect an oscilloscope to pin 41 of IC201.
5) Press the ÒWIDE (DATA DOWN)/TELE (DATA
UP)Ó button on remote control so that frequency of
pin 41 of IC201 is 4.36 ± 0.2MHz.
6) Be sure to press the ÒDISPLAY (CONFIRM)Ó
button on set or remote control to memorize
setting.
4. REC Y Level
1) Rec, 100% color bar signal
2) Pin 41 of IC101 and EVR
3) Confirm the Ò0F : REC YÓ mode by pressing the
ÒZ/MEMO (MODE CHANGE)Ó button of set.
4) Connect an oscilloscope to pin 41 of IC101.
5) Press the ÒWIDE (DATA DOWN)/TELE (DATA
UP)Ó button on remote control so the level of
pin 41 of IC101 is 170 ± 10mVp-p.
6) Be sure to press the ÒDISPLAY (CONFIRM)Ó
button on set or remote control to memorize
setting.
5. PB output level (Hi-8)
1) PB, Hi-8 color bar signal.
2) CE206 and EVR.
3) Confirm the Ò10 : PB Y1Ó mode by pressing the
ÒZ/MEMO (MODE CHANGE)Ó button of set.
4) Connect an oscilloscope to CE206.
5) Press the ÒWIDE (DATA DOWN)/TELE (DATA
UP)Ó button on remote control so the level of
CE206 is 2 ± 0.2Vp-p.
6) Be sure to press the ÒDISPLAY (CONFIRM)Ó
button on set or remote control to memorize
setting.
2 0.2Vp-p
170 10mVp-p
0.5 0.02Vp-p