Philips D2999 - Page 8

uP2 TABLE 2 pP4 TABLE 1
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Conn. 1/2 Conn.1/2. conn. 1/2 - 1/0 Port Pin Kp = +3 Ko =0 Kg = +3 \
VO Port Pin PB = 0 PB2 = open P89 =0
PAg 1 +3 0 0 f
PAg 1 +5 0 0 PAt 2 0 +30 +3
PAY . 2 0 0 +5°"* P Ag 3 +3 0 0 F :
PA2 ° o o 0 PA3 4 0 +3 +3 Pane
PA3 4 0 +5** +5** PBo / 38 +3 0 0 : Xo
PBo 38 +5" ; +5* 0° PB 39 0 : +3 ; - 43
PB} ' 39 ) 0 +5 ; PBs 40 +3 0 . 0 - ae
PBa2 40 0 +5 0 ; PB3 41 0 +3 +3 ‘
res ve 7 mm . “38 | Do =i‘ 43 0 0 Display: | : :
Do ae +5 Oi: 0 Display: D4 48 0 +3 +3 Allsegments — eo
Dy 18 0 +5 +5 All LEDs on*** Do 19 +3 0 0 on cp . %,
Be ee =? 0 | D3 20 0 +3 +3 :
D3 20 a 2 +5 0 48 : Eo 23 +3 ny 0 aa
pe. ae i ‘ o E3 26 0 +3 +3 i
Fo 27 +5 0 0 ; ae Fy 28 o** o* ot ‘
Fy 2B 0 0 0 Fo 29 +3 0 0
F2 oa - 868 0 0 | Fs 30 0 +3 +3 \
F3 30 0 +574" +5**™" Go 31 - 43° o* o*
Go 31 +6 : 0 0 ; G4 32 o** o** o** f
Gy 32 0 +5 +5 Go. 33 +3° o* o* 4
Go 33 +5 0 8) . G3 34° o* +3* +9"
G3 34 0 +5 +5
* Can only be measured when output stage is pulled pit to a series resistor of 100 kQ
*In some set versions this pin has been connected to mass. to +3.
Wide/Narrow switch to Wide, * This pin is connected to ground. e f{
*““ Signal consists of pulses. *** When there is no display: Do,4,2,3 = +3, 0, 0, +3 —> RAM of first uP is defective
| “ Supply voltage with pulses. Do.1.2.3 = 0, +3, 0, +3 -* LCD or driver is defective
“—* When there is no display: Bo,4,2.3 = +5, 0, 0, +5 —> RAM of second uP is defective
Do,1,2,3 = 9, +5, 0, +5 —» LED or driver is defective : ‘.
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