1-2. Electrical Alignment
1-2. Electrical Alignment
1-2-1. General Information for Electrical Alignment
1. Notes on Electrical Alignment
. The potentiometers RV902, 903, 1102 and 1103 are intended for future use.
Be sure to use these potentiometers with factory settings (mechanical center position).
. For the usage of the extension board, refer to O1-6. Use of Extension Board� in the Maintenance
Manual for DSM-T1/M1.
2. Required Equipment
Use the equipment listed below or the equivalent.
n
Use the calibrated equipment.
ItemModel
Composite video signal generatorTEKTRONIXTSG-170A (for 525 mode)
TSG-271 (for 625 mode)
Waveform monitor/vector scopeTEKTRONIX1780R (for 525 mode)
1781R (for 625 mode)
Synthesized signal generatorHEWLETT-PACKARDHP 8648B
MixerMINI-CIRCUITSZAD-11
OscilloscopeTEKTRONIX2465B or 2445B
Digital voltmeterADVANTESTTR6851
Audio signal generatorTEKTRONIXSG505-OP.02
Audio analyzerTEKTRONIXAA501A-OP.02
Digital Satellite Demodulator*1SONYDSM-R1
or
SDTI Demultiplexer*2SONYDSM-D1
*3
Analog Output BoardSONYBKSM-R103
Extension boardEX-592
(Sony Part No. : A-8315-128-A)
*1 : When the APR-30 board is installed in the DSM-T1, the DSM-R1 is required.
*2 : When the APR-30 board is installed in the DSM-M1, the DSM-D1 is required.
*3 : This board is installed in the DSM-R1 or DSM-D1.
3. To return the menu setting data to the factory setting
Return the menu setting data to the factory setting before adjusting.
Procedures :
(1) Write down the current menu setting data.
(2) Turn the power off.
(3) Turn the power on while pressing the ENTER - - buttons on the front panel simultaneously.
(4) Perform the required adjustment.
(5) After adjustment is completed, set the menu setting data to the original setting.
1-2 (E)BKSM-T103 |
ACEC
