Sony Trinitron PVM-20L2 User Manual

TRINITRON® COLOR VIDEO MONITOR
PVM-14L2
PVM-20L2
SERVICE MANUAL
1st Edition (Revised 1)
Serial No. 2000001 and Higher: PVM-14L2 (SY)
Serial No. 2500001 and Higher: PVM-14L2 (AU)
Serial No. 2000001 and Higher: PVM-20L2 (SY)
Serial No. 2500001 and Higher: PVM-20L2 (AU)

Sony Trinitron PVM-20L2 Specifications

General

Screen Size	20 inches
Display Type	CRT
Tube Type	Trinitron
Aspect Ratio	4:3
Input Connectors	BNC, Composite Video, S-Video
Power Consumption	90W

Summary

1. Service Informations

1-2. Disassembly (14 inch)

1-4. Disassembly (20 inch)

2. Set-up Adjustment

2-6. Free-run Frequency Adjustment

2-7. Landing Adjustment

Explains how to adjust the deflection yoke for proper beam landing on the screen.

2-9. Defection Adjustment

Covers various adjustments related to the deflection system for image geometry.

2-10. Convergence Adjustment (1)

Explains the first part of the convergence adjustment process for color alignment.

2-14. White Balance Adjustment (15k)

Details white balance adjustment for the 15kHz signal.

2-15. White Balance Adjustment (33 k)

Details white balance adjustment for the 33kHz signal.

2-19. Focus Adjustment

3. Safety Related Adjustment

3-1. +B Voltage Check

Procedure to check and verify the +B voltage supply for safe operation.

3-2. High Tension Regulator Confirmation

Confirms the stability and accuracy of the high-tension regulator.

3-3. Protection Circuit Confirmation

Verifies the correct operation of protective circuits against overvoltage or overcurrent.

4. Electrical Adjustments

4-2. B Board Adjustments

5. Theory of Operation

SAFETY CHECK-OUT

LEAKAGE TEST

Details the procedures for measuring AC leakage current from exposed metal parts to ground.