Sony TRINITRON KV-20S90 Service Manual
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Also See for TRINITRON KV-20S90:
- Service manual (94 pages) ,
- Dimension manual (1 page) ,
- Operating instructions manual (48 pages)
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Summary of Contents for Sony TRINITRON KV-20S90
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Page 1: Service Manual
Self Diagnosis Supported model BA-4D SERVICE MANUAL CHASSIS MODEL NAME REMOTE COMMANDER DESTINATION CHASSIS NO. KV-20S90 RM-Y155 SCC-S27NA Trinitron RM-Y155 KV-20S90 ® TRINITRON COLOR TELEVISION 9-965-905-01... -
Page 2: Section 4: Circuit Adjustments
KV-20S90 / 21SE43C SECTION 4: CIRCUIT ADJUSTMENTS ELECTRICAL ADJUSTMENTS BY REMOTE COMMANDER Use the Remote Commander (RM-Y155) to perform the circuit adjustments in this section. Test Equipment Required: 1. Pattern generator 2. Frequency counter 3. Digital multimeter 4. Audio oscillator 4-1. - Page 3 KV-20S90 / 21SE43C ADJUSTMENT ITEMS (1 OF 2) DATA INITIAL AVERAGE Reg # ITEM FUNCTION RANGE DATA VIDEO DATA HSIZ Horizontal Amp. Adjustment 0-31 HPOS Horizontal Position Adjustment 0-31 VBOW Vertical Line Bowing Adj. 0-15 VANG Vertical line Bowing Slant Adj. 0-15 TRAP Horizontal Trapezoid Adj.
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Page 4: A Board Adjustments
KV-20S90 / 21SE43C ADJUSTMENT ITEMS (2 OF 2) DATA INITIAL AVERAGE Reg # ITEM FUNCTION RANGE DATA VIDEO DATA G Output On/Off K-ID B Output On/Off HOSC Horizontal VCO Oscillation Freq. 0-15 Vertical Sync Slice Level Horizontal Sync Slice Level HMSK HMASK On/Off VTMS... -
Page 5: Frequency Check
KV-20S90 / 21SE43C V. FREQUENCY CHECK DISPLAY POSITION ADJUSTMENT (DISP) 1. Select video 1 with no signal input. 1. Input a color-bar signal. 2. Set the conditions for a standard setting. 2. Set to Service Adjustment Mode. 3. Connect the frequency counter to TP-508 or CN501 pin 6 (V DY+) 3. - Page 6 KV-20S90 / 21SE43C V. SIZE ADJUSTMENT (VSIZ) SERVICE ADJUSTMENT MODE MEMORY 1. Input a crosshatch signal. 1. Change the value of the DCOL item to 1. 2. After completing all adjustments, press 0 then ENTER . 2. Activate the Service Adjustment Mode. 3.