Samsung SV-4000W, Service Manual

Page: 27 / 127

Alignment and Adjustment
6-8 Samsung Electronics
7. Clolor Balance
1) Apply NTSC color bar signal to the video jack on
the rear panel.
2) Select output mode selection key to “PAL”.
3) Connect channel-1 oscilloscope probe to TPA15.
4) Adjust VRD1 so that waveforms are aligned as
shown below.
CORRESPOND TO LEVEL
8. SECAM Freq.
1) Apply PAL color bar signal to the video jack on
the rear panel.
2) Select output mode selection key to “SECAM”.
3) Connect channel-1 oscilloscope probe to TPA12.
4) Adjust VRA6 so that waveforms are aligned
as shown below.
CORRESPOND TO LEVEL
9. X’TAL
1) Apply PAL color bar signal to the video jack on
the rear panel.
2) Connect the frequency counter to TP24.
3) Select output mode selection key to “PAL”.
4) Adjust VCD1 for 4.433619MHz ± 25Hz.
5) Select output mode selection key to “NTSC”.
6) Adjust VCD2 for 3.579545MHz ± 25Hz.
7) Select output mode selection key to “PAL-N”.
8) Adjust VCD3 for 3.582056MHz ± 25Hz.
9) Select output mode selection key to “PAL-M”.
10) Adjust VCD4 for 3.575611MHz ± 25Hz.
No. Input Output Adjust Point Specification
1 PAL Color bar PAL VCD1 4.433619MHz ± 25Hz
2 PAL Color bar NTSC VCD2 3.579545MHz ± 25Hz
3 PAL Color bar PAL-N VCD3 3.582056MHz ± 25Hz
4 PAL Color bar PLA-M VCD4 3.575611MHz ± 25Hz