Commodore 1930 - Technical Specifications; Operating Specifications; Resolution and Input Standards; Front and Rear Controls

1930 SERVICE MANUAL
SPECIFICATIONS
(subject to modification)
AC voltage
- 120Vac + /- 10% - 60Hz
Power consumption at 120V
- 85 Watts
EHT
- 24 KV
Line frequency
- 31480 Hz
Frame frequency
- 60 Hz/70 Hz
Band width
- 18 MHz
Picture tube (9C M 082)
- M34 JPS 77 X 69
Picture tube (9C M 062)
- M 34 JPM 70X69
RESOLUTION
Sync, polarity
HOR. VERT.
- pos/neg
Pos. Neg.
- 640 dots X 350 lines
Neg. Pos.
- 640 dots X 400 lines
Neg. Neg.
- 640 dots X 480 lines
INPUT SPECS
RGB linear - all colors
Sync TTL level - pos/neg
CONTROLS
Front : Power on/off SK1 (incl. LED indicator)
: Brightness (R558)
: Contrast (R322)
: Horizontal phase (centering) (R408)
: Vertical centering (R524)
Rear : Horizontal width (R541)
: Vertical height (R513 for 480 lines)
INPUT SIGNAL CONNECTOR
15 PIN ”D” SHELL CONNECTOR
1 - red
6 - red ground
11 - ground
2 - green
7 - green ground
12 - n.c.
3 - blue
8 - blue ground
13 - horizontal sync
4 - n.c.
9 - n.c. 14 - vertical sync
5 - self test
10 - ground 15 - n.c.
VGA STANDARD
Horizontal
Vertical H. Sync.
V. Sync. Resolution
frequency
frequency
polarity
polarity (horizontal lines)
31.5 kHz 70 kHz
Positive (+)
Negative (-) 350
31.5 kHz 70 kHz
Negative (-)
Positive (+)
400
31.5 kHz 60 kHz Negative H
Negative (-)
480
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