Philips NMS-8245 Service Manual missing info

Prophet (3645)

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?

By Bondy

Resident (54)

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

By msxholder

Champion (399)

26-12-2015, 12:50

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

By Jipe

Paragon (1603)

26-12-2015, 15:17

see on VG8235/39 , is very same board

By msxholder

Champion (399)

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.

By marcoexo

Expert (83)

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 ! :-)

By HansO

Paladin (672)