Table of Contents
Advertisement
Quick Links
JBL
FIELD SERVICE GUIDE
MODEL 6810 AND 6820
VIDEO PROJECTOR
ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST
FAMILIARIZE HIMSELF WITH THE CHASSIS AND BE AWARE OF
THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN
SERVICING ELECTONIC EQUIPMENT CONTAINING HIGH
V O L T A G E S .
USE AN ISOLATION TRANSFORMER WHEN SERVICING THIS
JBL International
8500 Balboa Blvd.
Northridge, CA 91329
(818)
893-8411
Rev. 4.28
Professional
Video
Products
SAFETY NOTICE!
C A U T I O N !
Advertisement
Table of Contents
Subscribe to Our Youtube Channel
Related Manuals for JBL 6810
Summary of Contents for JBL 6810
- Page 1 Professional Video Products FIELD SERVICE GUIDE MODEL 6810 AND 6820 VIDEO PROJECTOR SAFETY NOTICE! ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING ELECTONIC EQUIPMENT CONTAINING HIGH V O L T A G E S .
-
Page 2: Table Of Contents
Using the Troubleshooting Charts Non-Serviceable Adjustments The Two Ground System Isolation Protection TV System Overview Adjusting the New CRT TS10P Tuning System Block Diagram 6810 Signal Row Block Diagram Electro/Mechanical Focusing Procedure Adjustment Procedures Nonserviceable Areas Horizontal Oscillator Vertical Height Computer Text Centering... -
Page 3: Service And Safety Precautions
"Safety Check" procedures. Introduction This Service Guide includes instruction for the Model 6810 Projection T V circuitry. It includes adjustment procedures plus symptom and troubleshooting charts to locate either faulty panels, socketed solid state devices, or modules. A signal flow block diagram and panel/module layout diagrams are included. -
Page 4: The Two Ground System
Using the Troubleshoot Charts When using the Troubleshooting Charts, determine the symptom by screen observation and control action. Check the Symptom Index and find the symptom that most closely describes the problem. The page indicating that kind of problem has the Troubleshoot Chart dealing with it. the Troubleshoot Charts list adjustments, panels and modules to be checked. - Page 5 Figure 1 - TS10 Tuning System Block Diagram...
- Page 6 Figure 2- Signal Flow Block Diagram...
-
Page 7: Electro/Mechanical Focusing Procedure
Electro/Mechanical Focusing Procedure 1. Set the Brightness, Picture, and Color controls for best picture. 2. Loosen the wing nuts on each lens. 3. Adjust the electrical Focus control to each CRT for sharpest scan lines viewed on the tube faceplate through the lens. 4. -
Page 8: White Balance/Gray Scale Tracking
3. Observe the viewing screen and adjust RP1 to center the text on the raster. White Balance/Gray Scale Tracking The CRT Drive Controls (RP1 on the CRT Drive Panels) and Screen or G2 Controls (on the G2/Focus Assembly between the red and green lenses) are adjusted using the following steps. 1. - Page 9 S y m p t o m Page Dead Set - Chart 1 No Audio, No Video - Chart 2 No Audio - Chart 3 No Audio, No Video - Chart 4 No Vertical Deflection - Chart 5 Picture Rolls - Chart 6 Set Shuts Down - Chart 7 Tuner Voltages - Chart 8 One Color Missing - Chart 9...
-
Page 10: Deflection Panel
Deflection Panel r Supply Panel The Power Supply Panel, Figure 3, is not to be repaired or The Deflection Panel, Figure 4, uses one socketed IC in the vertical circuit. IC3 is the Vertical Ramp Amp which drives hP I n . t h e N O N « adjustments d G V l 6 S >... -
Page 11: All Band Tuner
nd Tuner TS10P Tuner Interface Panel The All Band Tuner, Figure 5 , is interconnected to the Con- troller by plugs P/J21 and P/J22. There are no service adjust- Interface Panel, Figure 6 t h e are. IF Module, Controller, and Serial/Parallel Converter IC1 ments or plug-in components. -
Page 12: Ts10P Controller
TS10P Controller Audio/Video Input/Output Panel The plug-in devices on the TS10P Controller, Figure 7 , are: Video, Sync, Audio, and RGB Video switching is done by five Microcomputer IC1000, CITAC IC1200, and Microcomputer socketed Bilateral Switch ICs. A sixth device, not socketed, is IC1400. -
Page 13: Stereo/Sap Decoder Module
Stereo Power Amplifier Stereo/SAP Decoder Module All solid state devices are nonsocketed. Monaural, Stereo or All solid state devices on the Stereo Power Amp are nonsock- SAP audio malfunctions are serviced by Decoder Module eted. Any malfunction is serviced by replacing the Stereo Power replacement, Figure 9 . -
Page 14: Video Processor Panel
Comb Filter Module rocessor Panel The Comb Filter is a module, which is nonserviceable. It has no The socketed ICs are: Video Processor IC2, Figure 12, RGB socketed solid state devices, and all controls are factory Processor IC4, Sand Castle Generator ICS and RGB Buffer IC6. adjustments. -
Page 15: Crt Drive Panels
Drive Panels Convergence Panel The Red, Green, and Blue CRTs are driven by identical panels, All ICs are socketed on this panel except 1C10 through IC15. Figure 14. All solid state devices on the CRT Drive Panels are Malfunctions created by circuitry other than ICs are serviced by nonsocketed. - Page 16 Chart 2 Chart 1 Chart 3 Note: Symptom: Symptom: Note: Symplon: 1. Tune To A Live Channel No Audio, No The S U r l - U p 24V la Dead Set No Audio 2. Use A Volt Ohmmeter With Present Normally Video An AC Output Measuring...
- Page 17 Charts Chart 4 Chart 6 Symptom: Symptom: Symptom: No Vertical No Audio, No Picture Rolls Deflection Video Note: Before Video And Audio Tests. J u m p e r H o r l i . Check The Input' Check Tuner Check Deflection Oscillator M o d u l e Voltage To The IF...
- Page 18 Chart 7 Symptom: Set Shuts Down Chart 9 Note: Shut D o w n Circuits Are Located Symptom: one color missing On The Power Defeat Q7 On Supply And D e t e c - Deflection Panel tion Panels. Defeat- Jumper Collector To ing One At A Time Interchange...
- Page 19 Chart 10 Chart 11 Check Symptom: Symptom: I Voltage Sources Color Band at Bottom Set Does Not TP16 Is 8V T P ! 8 Is Of Picture Converge 1SVJ604-2 Is 16V T P U I s -BV T P I 9 I , - •...
- Page 20 Chart 12 Symplom: Pincushion Error Top/Bottom And Side Check Crosshatch Setup For Side Pincushion 1. Use Crosshatch Error. Generator. Side Pincushion Circuits OK. Adjust Side Pin- cushion Controls RP29, RP30, And RP31. Check IC2. Q7, Q | , R H 3 , Rt 19, R95 Or Replace Panel.
Need help?
Do you have a question about the 6810 and is the answer not in the manual?
Questions and answers