7.2. Video Output (Chrominance Signal) Confirmation
Do the confirmation after replacing P.C.B.
Purpose:To maintain video signal output compatibility.
1.Connect the oscilloscope to the video output terminal and terminate at 75 ohme.
2.Confirm that the chrominance signal(C)level is 621 mVp-p±30mV
Measurement point
Video output terminal
Color bar 75%
PLAY(Title 46):DVDT-S15
PLAY(Title 12):DVDT-S01
DVDT-S15
or
DVDT-S01
Mode
Disc
Measuring equipment,tools
Confirmation value
Screwdriver,Oscilloscope
200mV/dir,10 sec/dir
621mVp-p±30mV
14
1
Summary of Contents for BBK921D
Page 1: ...SERVICE MANUAL BBK921D...
Page 4: ...3 Precaution of L aster Diode 3...
Page 5: ...4...
Page 6: ...5...
Page 16: ...8 MPEG BOARD CHECK WAVEFORM 2 IC5L0380R PIN 2 WAVEFORM DIAGRAM 1 27MHz WAVEFORM DIAGRAM 15...
Page 34: ...33 FRONT SCHEMATIC DIAGRAM...
Page 36: ...35 POWER BOARD SCHEMATIC DIAGRAM...
Page 38: ...37 OK SCHEMATIC DIAGRAM...
Page 44: ...43 MIAN SCHEMATIC DIAGRAM...
Page 45: ...44 MIAN SCHEMATIC DIAGRAM...
