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TROUBLE SHOOTING GUIDE FOR VIDEO SYSTEM 100
ALL TESTS BELOW ARE ON VA/100 PSU/CONTROLLER UNLESS OTHERWISE STATED. IF ANY OF
THE VOLTAGE READINGS ARE NOT CORRECT, DISCONNECT WIRING FROM RELEVANT
TERMINALS AND RE-MEASURE.
NOTHING WORKS AT ALL
1. CHECK MONITOR SWITCHED ON AT THUMBWHEEL (CLOCKWISE DIRECTION).
2. CHECK 240VAC INTO VAS/100 & 17.5VDC ACROSS A1(+VE) & A2(-VE) ON VAS/100.
3. CHECK FOR 17.5VDCACROSS B1 (+VE) & B2(-VE), B5 & B6 AND C5 & C6 WHERE TERMINAL 5 IS
ALWAYS NEGATIVE.
4. CHECK FOR 17.5VDC ACROSS 5 & 6 AT MONITOR & PANEL.
5. CHECK IF MONITOR PREVIEWS (PRESS CAMERA BUTTON ON MONITOR).
NO PREVIEW AT MONITOR
1. CHECK B5 & B8 = 1VDC PRIOR TO PREVIEW. IF B5 & B8 = 10VDC SYSTEM IS ACTIVE & PREVIEW
DISABLED UNTIL CALL MADE/SYSTEM TIMER ELAPSES. (I.E. ANOTHER MONITOR IS ON).
2. CHECK B5 & B9 = 0VDC WHEN PREVIEW (CAMERA) BUTTON PRESSED.
3. CHECK B5 & B8 = 10VDC AFTER PREVIEW PRESSED.
4. CHECK 5 & 8 = 10VDC AT MONITOR WITH MONITOR IN SITU (IF NOT CHECK CONTINUITY OF
LINE 8 TO MONITOR).
NO CALL TO MONITOR
1. CHECK FOR 15VDC ACROSS C5 & C8.
2. CHECK FOR 15VDC ACROSS CORRESPONING TERMINALS ON PANEL.
3. CHECK FOR 10VDC ACROSS C5 & CALL LINE (7 IN MONITOR) DURING CALL.
4. IF CHECK 3 = 15VDC, CHECK DIP SWITCH 3 ON IN MONITOR & CONTINUITY OF CALL LINE
(SHOULD = 1K ohm BETWEEN 5 & CALL LINE).
5. IF CALLING MORE THAN ONE MONITOR ENSURE DIPSWITCH 3 IS ON IN ONE ONLY. ALSO
ENSURE ADDITIONAL PSU('S) ADDED AS REQUIRED.
NO AUDIO TO MONITOR
1. CHECK VOLUME LEVEL IN PANEL NOT AT MINIMUM (FULLY ANTI-CLOCKWISE IS MINIMUM ON
PHONE POTENTIOMETER).
2. CHECK FOR 17.5VDC ACROSS 5 & 6 IN PANEL.
3. CHECK FOR 17.5VDC ACROSS 6(+VE) & 14 (-VE) AFTER CALL/PREVIEW IN PANEL (IF NOT
CHECK CONTINUITY 14 FROM VA/100 TO 14 ON PANEL).
4. IF MVA/100.01 PANEL WITHOUT MR/100, CHECK JUMPER SW2 IS ON.
5. REMOVE CABLES 11,12 & 14 IN PANEL & PLACE LINK BETWEEN TERMINALS 11 & 12 AND
TERMINALS 5 & 14. THIS SHOULD RESULT IN FEEDBACK AT THE PANEL.
NO AUDIO TO PANEL
1. CHECK VOLUME LEVEL IN PANEL NOT AT MINIMUM (FULLY ANTI-CLOCKWISE IS MINIMUM ON
SPEAKER POTENTIOMETER).
2. CHECK FOR 15VDC ACROSS B5 & B9.
3. ACTIVATE MONITOR (PREVIEW OR CALL) & CHECK FOR 12VDC ACROSS B5 & B9 WITH PHONE
OFF HOOK.
4. REPEAT CHECKS 2,3 & 5 FROM NO AUDIO TO MONITOR.
5. CHECK CONTINUITY OF C12 VA/100 TO TERMINAL 12 AT THE PANEL.(SHOULD = 5VDC ACROSS
C5 & C12 AT VA/100 AND 5 & 12 AT THE PANEL)
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Summary of Contents for Bpt VIDEO SYSTEM 100
- Page 1 TROUBLE SHOOTING GUIDE FOR VIDEO SYSTEM 100 ALL TESTS BELOW ARE ON VA/100 PSU/CONTROLLER UNLESS OTHERWISE STATED. IF ANY OF THE VOLTAGE READINGS ARE NOT CORRECT, DISCONNECT WIRING FROM RELEVANT TERMINALS AND RE-MEASURE. NOTHING WORKS AT ALL 1. CHECK MONITOR SWITCHED ON AT THUMBWHEEL (CLOCKWISE DIRECTION).
- Page 2 NO VIDEO SIGNAL 1. CHECK BRIGHTNESS/CONTRAST SETTING ON MONITOR (THUMBWHEEL) NOT AT MINIMUM (TURN CLOCKWISE FOR ON). 2. CHECK 5 & 6 = 17.5VDC ON CAMERA UNIT. 3. CHECK 14 ON CAMERA UNIT LINKED TO 14 ON VA/100 & CHECK FOR 17.5VDC ACROSS 6 (+VE) &...
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Questions and answers
static interference on screen and audio
The provided context does not mention static interference specifically. However, to troubleshoot possible causes of static interference on the screen and audio of the Bpt VIDEO SYSTEM 100, you can try the following steps based on related troubleshooting information:
1. Check Power Supply: Ensure the system receives the correct voltage:
- 240VAC into VA/100.
- 17.5VDC across A1(+VE) & A2(-VE), B1(+VE) & B2(-VE), and C5 & C6.
2. Inspect Wiring Connections: Loose or faulty wiring can cause interference.
- Disconnect and re-measure voltage at relevant terminals.
- Ensure proper continuity of cables, especially between VA/100 and the monitor/panel.
3. Monitor and Panel Checks:
- Confirm that the monitor and panel receive the correct voltage (17.5VDC across 5 & 6).
- Check cable cross-section and rating, ensuring they are adequate.
4. Reduce Interference Sources:
- Ensure cables are not running alongside high-voltage lines or near other electronic devices that can cause interference.
- If interference occurs when pressing buttons, check voltage stability at B5 & B9 and adjust cable cross-section if necessary.
5. Balance Volume Potentiometers:
- Adjust the volume potentiometers in the panel for proper balance, as small adjustments may be required to minimize audio interference.
6. Direct Connection Test:
- Connect the monitor and panel directly to the VA/100 unit using short leads to identify if the issue is due to cable problems or incorrect connections.
If interference persists, further diagnosis of external factors or faulty components may be needed.
This answer is automatically generated