– 20 –
E-F Balance (Traverse) Check (With remote commander)
oscilloscope
BD board
TP (TE)
TP (VC)
+
–
Procedure :
1. Connect oscilloscpe to test point TP (TE) on BD board.
2. Short-circuit SL502 of the video board to GND.
3. Turned Power switch on. Press FUNCTION button to select
CD.
4. Put disc (YEDS-18) in to play the number five track.
5. Press the PLAY MODE button. (The tracking servo and the
sledding servo are turned OFF.)
6. Check the level B of the oscilliscope's waveform and the A (DC
voltage) of the center of the Traverse waveform.
Confirm the following :
A/B x 100 = less than ± 22%
Traverse waveform
Adjustment Location :
[ BD BOARD ] – SIDE A –
TP
(TE)
TP
(FEI)
TP
(FE)
TP
(RF)
TP
(VC)
0V
C (DC
voltage)
Tracking servo
Sled servo
OFF
Tracking servo
Sled servo
ON
0V
level : 1.3
±
0.6 Vp-p
A (DC voltage)
Center of the waveform
B
7. Press the PLAY MODE button. (The tracking servo and sled-
ding servo are turned ON.) Confirm the C (DC voltage) is almost
equal to the A (DC voltage) is step 7.
Traverse waveform
8. Desolder the short-land (SL502) short-circuited at step 2.
Содержание HCD-V818
Страница 8: ... 8 This section is extracted from instruction manual ...
Страница 32: ... 41 42 HCD V818 8 5 SCHEMATIC DIAGRAM DECK SECTION See page 86 for IC Block Diagrams Page 56 ...
Страница 33: ... 43 44 HCD V818 8 6 PRINTED WIRING BOARD DECK SECTION See page 22 for Circuit Boards Location Page 53 ...
Страница 50: ... 77 78 HCD V818 8 26 SCHEMATIC DIAGRAM PANEL SECTION Page 76 Page 76 Page 75 ...
Страница 52: ... 81 82 HCD V818 8 28 SCHEMATIC DIAGRAM CD MOTOR SECTION See page 86 for IC Block Diagrams Page 58 Page 58 ...