Philips NMS-8245 Service Manual missing info

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Door sd_snatcher

Prophet (3270)

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26-12-2015, 03:21

The schematics that contain the VDP and SCART connector seem to be missing from the Philips NMS-8245 service manual scanned by Hans Otten in 2001. Is this info available anywhere? Or was it already missing from the original service manual?

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Van Bondy

Resident (54)

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26-12-2015, 07:33

From the msx faq, not sure if it's for the 8245 in particular:

Quote:

SCART connector (Philips: Audio/Video out, Sony: RGB)

+---------------------------------------------+
\ 20 18 16 14 12 10 8 6 4 2 |
\ |
21| 19 17 15 13 11 9 7 5 3 1 |
+-------------------------------------------+

Pin Name I/O Signal level Imp.
--------------------------------------------------------------------------------
1 Audio out (right) O nom: 0.5V, max: 2V less than 1kOhm
2 Audio in (right) I nom: 0.5V, max: 2V more than 10kOhms
3 Audio out (left) (+Mono) O nom: 0.5V, max: 2V less than 1kOhm
4 Audio GND
5 RGB Blue GND
6 Audio in (left) I nom: 0.5V, max: 2V more than 10kOhms
7 RGB Blue out O 0.7Vpp 75 Ohms
8 Status CVBS O 0: 0.2V; 1: 9.5-12V
9 RGB Green GND
10 NC or Data 2: Clockpulse Out
11 RGB Green out O 0.7Vpp 75 Ohms
12 NC or Data 1: Data Out
13 RGB Red GND
14 Data line GND
15 RGB Red out or Chrominance (SVHS) O 0.7Vpp (Chrom.: 0.3V burst) 75 Ohms
16 Status RGB/blanking O 0: 0-0.4V=Comp., 1:1-3V=RGB 75 Ohms
17 CVBS/video GND
18 Status RGB GND
19 CVBS/video out O 1Vpp (comp. video)
20 CVBS/video in or Luminance (SVHS) I 1Vpp (comp. video)
21 Socket GND

http://faq.msxnet.org/connector.html

Van msxholder

Champion (343)

afbeelding van msxholder

26-12-2015, 12:50

The servicemanual has it
H.O. pages are missing it

Van Jipe

Paragon (1382)

afbeelding van Jipe

26-12-2015, 15:17

see on VG8235/39 , is very same board

Van msxholder

Champion (343)

afbeelding van msxholder

26-12-2015, 23:41

It is an other rgb to compsit encoder not an lva but an mc1377p
Different pcb and thus an other schematic.

Van marcoexo

Expert (83)

afbeelding van marcoexo

15-11-2017, 17:54

Hello, I'm trying to repair a black screened NMS 8245 and me too found that two very important VDP schematic pages seem to be missing... Anybody can provide the missing pages ? On the Internet can only be found the very good scan from Hans Otten, which unfortunately not complete...

Please Help ! :-)

Van HansO

Paladin (672)

afbeelding van HansO

16-11-2017, 20:43

If MSXHOLDER could scan the missing parts I would welcome that as addendum to the manual.

Van marcoexo

Expert (83)

afbeelding van marcoexo

16-11-2017, 21:52

HansO wrote:

If MSXHOLDER could scan the missing parts I would welcome that as addendum to the manual.

That would be great, thanks Hans, and take my compliments for your excellent job in documenting and supporting MSX !
Thanks to MSXHOLDER too !

Van HansO

Paladin (672)

afbeelding van HansO

18-11-2017, 14:11

Thanks to MSXHOLDER the missing pages have been added to the service manual.

Usual place is: http://msx.hansotten.com/manuals-and-guides/

Van sd_snatcher

Prophet (3270)

afbeelding van sd_snatcher

18-11-2017, 16:30

Thansk! But a page still seems to be missing for the "ENCODER UNIT" schematics.

Van HansO

Paladin (672)

afbeelding van HansO

19-11-2017, 10:45

I have good hope the ENCODER Unit is also coming!

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