Sharp 21G-FX10L Servis Kılavuzu - Sayfa 13
TV Sharp 21G-FX10L için çevrimiçi göz atın veya pdf Servis Kılavuzu indirin. Sharp 21G-FX10L 50 sayfaları. Colour television
Sayfayı Yazdır
21G-FX10L
H-VCO, VIF-VCO & S-TRAP fo ADJUSTMENT
NO
ADJUSTMENT POINT
(Manual Adj)
1
H-VCO ADJ
(I2C BUS CONTROL)
(1) In No signal (RASTER) condition.
(2) Go to service mode, choose service data V25.
(AUTO & MANUAL ADJ)
(3) Connect oscilloscope to IC801 pin13 (H-OUT), adj V25 until freq
become 15.735 ± 0.2KHz.
(Auto Adj)
(1) In No signal (RASTER) condition.
(2) Go to service mode.
(3) Choose service data V25, by pressing R/C "AUTO H-VCO" key, OSD will appear "OK"
at screen.
(4) If appear "NG" pls repeat step 3.
(Manual Adj)
2
VIF-VCO ADJ
(I2C BUS CONTROL)
(1) In No signal (RASTER) condition.
(2) Go to service mode, choose service data V14
(AUTO & MANUAL ADJ)
(3) Connect oscilloscope to IC801 pin7 (AFT), adj V14 until voltage become
2.5 ± 0.5 V DC (Checking spec : 2.50 ± 1.5 V)
(Auto Adj)
(1) In No signal (RASTER) condition.
(2) Go to service mode, choose service data V14.
(3) Press the R/C "AUTO PIF-VCO" key, OSD will appear "OK" at screen.
(4) If appear "NG" pls repeat step 3.
(Manual ADJ)
3
S-TRAP fo ADJ
(I2C BUS CONTROL)
(1) In No signal (RASTER) condition.
(2) Go to service mode, choose service data V26.
(AUTO & MANUAL ADJ)
(3) Connect oscilloscope to TP 801 or IC801 pin 30, adj V26 until voltage become Min (below 5 V).
(Auto Adj)
(1) In No signal (RASTER) condition.
(2) Go to service mode, choose service data V26.
(3) Press the R/C "AUTO S-TRAP" key, OSD will appear "OK" at screen.
(4) If appear "NG" pls repeat step 3.
ADJUSTMENT CONDITION / PROCEDURE
5 – 6
WAVEFORM OR OTHERS
*NOTE:
This adjustment must be done after aging
at least 3 minutes.