donn@killer.DALLAS.TX.US (Donn Fishbein) (08/09/88)
Is anyone using a Sony 1302 Multisync monitor with a Mac II video card? On our setup, it seems to work ok, except that illuminated area of the screen has a slightly concave edge, which the Apple RGB monitor does not have. Someone suggested that there was an internal mod to the Sony one could perform to correct this. Does anyone know anything more about this? Many thanks.
hodas@eniac.seas.upenn.edu (Josh Hodas) (08/09/88)
In article <5142@killer.DALLAS.TX.US> donn@killer.DALLAS.TX.US (Donn Fishbein) writes: >Is anyone using a Sony 1302 Multisync monitor with a Mac II >video card? On our setup, it seems to work ok, except that >illuminated area of the screen has a slightly concave edge, >which the Apple RGB monitor does not have. Someone suggested that >there was an internal mod to the Sony one could perform to correct >this. Does anyone know anything more about this? >Many thanks. To: donn@killer.DALLAS.TX.US Subject: Re: Mac II Video/Sony 1302 Multisync monitor Newsgroups: comp.sys.mac In-Reply-To: <5142@killer.DALLAS.TX.US> Organization: University of Pennsylvania Cc: Bcc: In article <5142@killer.DALLAS.TX.US> you write: >Is anyone using a Sony 1302 Multisync monitor with a Mac II >video card? On our setup, it seems to work ok, except that >illuminated area of the screen has a slightly concave edge, >which the Apple RGB monitor does not have. Someone suggested that >there was an internal mod to the Sony one could perform to correct >this. Does anyone know anything more about this? >Many thanks. Don, the following is a summary of Sony Technical Support Tip #TT-18 (6/29/87) I of course disclaim any responsibility for any problems arise from anyone doing this. While I don't know the current warranty status of doing this yourself, I will say that I received this Tech Tip from the national Sony US office after complaining that the local service depots had know idea what the issues involoved with computer monitors were. They told me it would be ok for me to do it myself (this was in 7/87). Hope it helps. Josh PS: I am posting this rather than replying e-mail as I think there may be many people living with this problem not realizing it is easily reparable. I have found many installations that left it unresolved unitil I showed them the fix (typical dealer response was, Oh, that's just a design flaw in the 1302, it cant be fixed.) Now, can anyone tell me whats causing the almost constant wobble in my display? this is I think unrelated to the apple color monitor shake problem which hap- pens only at power up do to the degausser. Josh ----------- Power down the system, and disconnect the monitore power chord and video cable. Open the case by removing the obvious screws. ... 4) Gently and carefully lift the cover away from the mounting brackets until it is clear of the internal chassis. (you may have to renmove the swivel stand first) 5) Using only the front face plate and the metal chassis frame, carefully turn the monitor onto its left side (when looking at the monitor from the front) Find the bottom PC Board, it's marked "D". 6) Connect the monitor to the video card, connect the AC chord, and power up the mac and the monitor. 7) Bring up the Monitor CDEV from the control panel and select the Convergence Test button to display the convergence test pattern on the monitors screen. 8) Locate the six adjustment pots (potentiometers) on the PC board. They are labelled (from top to bottom) RV506 RV503 RV570 RV504 RV580 RV503. Use a PLASTIC TV ADJUSTMENT TOOL (theyre about $.50 at Radio Shack) to carefully adjust pots RV570 (Pin Phase) RV504 (Pin Amp) and RV580 (Top Pin) until the displayed lines are straight on all four sides of the monitor. No adjust- ment of RV506 RV503 or RV502 is required. The following drawin shows (approximately what conditions each of these pots fixes): RV570 |-----------| |-----------| Pin Phase | _____ | | _______ | | / \ | or | \ / | | /_______\ | | \___/ | |-----------| |-----------| RV504 |-----------| |-----------| Pin Amp | _______ | | _____ | | \ / | or | / \ | | ) ( | | ( ) | | /_____\ | | \_____/ | |-----------| |-----------| RV580 |-----------| |-----------| Top Pin | _________ | | _______ | | \ / | or | | | | | | | | | | | | | |_______| | | /_______\ | |-----------| |-----------| ------------------------- Josh Hodas (hodas@eniac.seas.upenn.edu) 4223 Pine Street Philadelphia, PA 19104 (215) 222-7112 (home) (215) 898-9515 (school office)