KV-30XBR910 - Sony TV Service Manual (repair manual). Page 21

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KV-30XBR910/34XBR910
SECTION 3:  SAFETY RELATED ADJUSTMENTS
3-1.  PREPARATION BEFORE CONFIRMATION
Standard ............................................................................. 135.3 ± 1 VAC
Check Condition:
  AC input voltage: 120 (± 2) VAC 
Note: If using a stabilized power supply, make sure that the distortion  
 factor is 3% or less. 
Setting Mode: ............................................................................ Full mode
Signal Input: ............................................................Cross-hatch of NTSC
Initial Setting: .....................................................Standard Reset condition
Confi rm Point:............................ Across CN5509 PIN 9 for B+ of D Board
3-1.1 HOLD-DOWN 
OPERATION 
CONFIRMATION
1.  Using an external DC power supply, apply 5.3 ± 0.5 Vdc between 
Pin 2 of CN507 (jig connector) and ground (Pin 8); confi rm set goes 
to hold-down (main power relay click).
2.  Remove the external DC power supply.
3-2.  B+ MAX CONFIRMATION
Standard 
135.3 ± 1 VAC
Check Condition:
  AC input voltage: 120 (± 2) VAC 
Note: If using a stabilized power supply, make sure that the distortion  
 factor is 3% or less. 
Setting Mode: ............................................................................ Full mode
Signal Input: ............................................................Cross-hatch of NTSC
Initial Setting: .....................................................Standard Reset condition
Confi rm Point:............................ Across CN5509 PIN 9 for B+ of D Board
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