27R-S200, 27R-S400
27R-S450, CR27S20
CSR20027
� MTS ADJUSTMENT� P-IN-P ADJUSTMENT
(Only for 27R-S400, 27R-S450)
MTS Level AdjustmentP-IN-P Y-LEVEL Adjustment
1. Receive the following composite signal.1. Receive a good local channel.
Monaural signal: 400Hz, 100% modulation2. Enter the service mode and select the service
2. Connect the rms voltmeter to pin (39) of IC3001.adjustment "P01".
3. Enter the service mode and select the service3. Adjust "P01" data value to obtain normal contrast
adjustment "M01" and set to "09".level.
4. Enter the service mode and select the service
adjustment "EX4".P-IN-P TINT Adjustment
5. Adjust the data so that the rms voltmeter reads 490
1. Receive a good local channel.
?10 mVrms.2. Enter the service mode and select the service
adjustment "P02".
MTS VCO Adjustment3. Adjust data value to "29".
1. Keep the unit in no-signal state.
2. Connect the frequency counter to pin (39) of IC3001.P-IN-P COLOR Adjustment
3. Connect a capacitor (100?F, 50V) in between1. Receive a good local channel.
positive(+) side of C3005 and ground.2. Make sure the customer color control is set to center
4. Enter the service mode and select the serposition.vice
adjustment "M02"3. Enter the service mode and select the service
5. Adjust the data so that the frequency counter readsadjustment "P03".
62.94 ?0.75kHz.4. Adjust "P03" data value to obtain normal color level.
Filter AdjustmentP-IN-P Y-OFF SET Adjustment
1. Feed the following stereo pilot signal to pin (14) of1. Receive a good local channel.
IC3001 .2. Enter the service mode and select the service
Stereo pilot signal: 9.4kHz, 600mVrms.adjustment "P04".
2. Enter the service mode and select the ser3. Adjust data vvicealue to "09".
adjustment "M03".
3. Adjust the data until "OK" appears in position on theP-IN-P H-POSITION Adjustment
screen. Make sure the "OK" is displayed almost at1. Receive a good local channel.
the center of the data range.2. Enter the service mode and select the service
adjustment "P05".
Separation Adjustment
3. Adjust data value to "0A".
1. Connect the rms voltmeter to pin (39) of IC3001.
2. Receive the following composite stereo signal 1.
P-IN-P BURST GATE PULSE (for MAIN)
Composite stereo signal: 30% modulation, left1. Receive a good local channel.
channel only, noise reduction on, 300Hz2. Enter the service mode and select the service
3. Enter the service mode and select the serviceadjustment "P06".
adjustment "M04".
3. Adjust data value to "00".
4. Adjust the data until the AC voltage reading of the
RMS voltmeter is minimum.
P-IN-P FREERUN
5. Receive the following composite stereo signal 2.
1. Receive a good local channel.
Stereo signal: 30% modulation, left channel only,
2. Enter the service mode and select the service
noise reduction on, 3kHz
adjustment "P07".
6. Enter the service mode and select the service
3. Adjust data value to "0B".
adjustment "M05".
7. Adjust the data until the AC voltage reading of the
rms voltmeter is minimum.
8. Take the above steps 1 thru 7 again for fine
adjustment.
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ACEC
