Brand: SANYO
Category: Video
Document Type: Manual
Language: EN
Manual for VM-6612
Uploaded: Nov. 21, 2025, 6:28 p.m.
1. **Front Panel Controls:**
- Monitor Selector Switch (VIDEO A/B): Selects input source A or B.
- Contrast Control: Adjusts picture contrast.
- Brightness Control: Adjusts picture brightness.
- Power Indicator: Shows power status.
- Power Switch: Turns the monitor on/off.
2. **Rear Panel Controls & Connection:**
- AC Input Socket: Connects the power cord.
- Video Input Terminals (VIDEO IN): Connects video signal sources (VCR, camera).
- Video Output Terminals (VIDEO OUT): Outputs video signal for loop-through.
- Termination Switch (HI/75 Ω (Lo)): Sets input impedance (75 ohm for single monitor, HI for multiple).
- Sub-brightness Control (SUB-BRI): Adjusts picture brightness.
- Vertical Size Control (V-SIZE): Adjusts the vertical size of the picture.
- Vertical Hold Control (V-HOLD): Stabilizes the picture vertically if scrolling occurs.
Troubleshooting and error codes
| ADJUSTMENT ITEM | TIMING | PATTERN | SETTING | VR LOCATION | ADJUSTMENT PROCEDURE |
|---|---|---|---|---|---|
| VERTICAL LINEARITY ADJUSTMENT | PATTERN GENERATOR MODE CROSS-HATCHED PATTERN | CONTRAST VR AND BRIGHT VR TO CENTER. | VR303 | Adjust VR303 to make equal distance between top-center and bottom-center. | |
| HORIZONTAL HOLD ADJUSTMENT | PATTERN GENERATOR MODE CROSS-HATCHED PATTERN | CONTRAST VR AND BRIGHT VR TO CENTER. | VR401 | Turn off horizontal sync. (pin to ground) Adjust VR401 to make pattern upright. | |
| GEOMETRIC DISTORTION PATTERN ADJUSTMENT | PATTERN GENERATOR MODE CROSS-HATCHED PATTERN | CONTRAST VR AND BRIGHT VR TO CENTER. | Adjust eigth magnets on the deflection yoke make picture to the best condition. | ||
| VIDEO CENTERING ADJUSTMENT | PATTERN GENERATOR MODE MONOSCOPE PATTERN | CONTRAST VR AND BRIGHT VR TO CENTER. | The video is centered by rotating the two small at the rear of the yoke. | ||
| VIDEO TILT ADJUSTMENT | PATTERN GENERATOR MODE CROSS-HATCHED PATTERN | CONTRAST VR AND BRIGHT VR TO CENTER. | Loosen the screw on the rear of deflection yoke, rotating the yoke to correct position tighten the screw. | ||
| VERTICAL SIZE ADJUSTMENT | PATTERN GENERATOR MODE MONOSCOPE PATTERN | CONTRAST VR AND BRIGHT VR TO CENTER. | VR302 | Adjust VR302 make height to "1.5" position. | |
| VERTICAL HOLD ADJUSTMENT | PATTERN GENERATOR MODE MONOSCOPE PATTERN | CONTRAST VR AND BRIGHT VR TO CENTER. | VR301 | Adjust VR301 to make pattern stop rolling. | |
| INTERLACE ADJUSTMENT | CAMERA SIGNAL | CONTRAST VR AND BRIGHT VR TO CENTER. | VR301 | Adjust VR301 have gap of vertical scan line distinguish clearly. | |
| RASTER ADJUSTMENT | DISCONNECT VIDEO SIGNAL AND PATTERN GENERATOR MODE FULL-WHITE PATTERN | CONTRAST VR AND BRIGHT VR TO MAX. | VR402 | Adjust VR402 to the suitable brightness. | |
| FOCUS ADJUSTMENT | PATTERN GENERATOR MODE MONOSCOPE PATTERN | CONTRAST VR AND BRIGHT VR TO CENTER. | VR404 | Adjust VR404 have control picture and 4 corners to be distinguished. |