Philips DELLP1230, Руководство по обслуживанию

Страница: 82 / 92

Repair Flow Chart
8 2
9
Go to cover page
E. CPU
check list
check cpu pin6=5V
pin9/pin8=12MhZ
pin12/pin31=gnd
power saving pin20 pin27
normal hi hi
off low low
33,34,40,41
Hsync/Vsync
18. Hunlock
check sync.
hin=pin40
vin=pin41
hout=pin34
vout=pin33
check pin4 duty cycle of
pwm from 0% to 100%
Basic Check
2. H-Centering
check Q1~Q6
Pin10~15
low : 0
hi :1
3. ABL-Adj
4. H-linearity
Pin10~15 (S6~S1)
S-cap switch
check pin3 duty cycle of
pwm from 0% to 100%
check pin2 duty cycle of
pwm from 0% to 100%
1. Normal
Fvout=Fvin
FHout=FHin
2. sync out of rang
Fhin>131.5KHz
Fvin>168Hz
check pin18
normal=Low
blank=Hi
20,27 P.S.
LED
check pin20/27
19. Blank
check pin19
normal : low
change timing : Hi
202P130K S-CAPACITOR SWITCH TABLE
Hor. Freq.(KHz) Q7 Q6 Q5 Q4 Q3 Q2 Q1
~33.00 1 1 1 1 1 1 1
33.00~36.00
0 1 1 1 1 0 1
36.00~42.00
1 0 1 1 0 0 1
42.00~45.00 1 0 1 1 1 1 0
45.00~47.50 0 1 0 0 1 1 0
47.50~49.00 0 1 1 1 0 1 0
49.00~52.00 0 0 0 1 0 1 0
52.00~55.00 1 0 1 0 0 1 0
55.00~58.50 0 1 0 0 0 1 0
58.50~61.50 1 1 0 1 1 0 0
61.50~65.00 1 1 1 0 1 0 0
65.00~70.00 0 0 1 0 1 0 0
70.00~73.00 1 0 0 0 1 0 0
73.00~76.00 0 1 1 1 0 0 0
76.00~80.60 1 0 1 1 0 0 0
80.60~82.50
1 1 0 1 0 0 0
82.50~84.80
0 1 0 1 0 0 0
84.50~88.50 1 0 0 1 0 0 0
88.50~92.50 0 0 0 1 0 0 0
92.50~98.00 1 1 1 0 0 0 0
98.00~102.00 0 1 1 0 0 0 0
102.00~110.00 1 0 1 0 0 0 0
110.00~113.50 1 1 0 0 0 0 0
113.50~122.00 0 1 0 0 0 0 0
122.00~126.50 1 0 0 0 0 0 0
126.50~ 0 0 0 0 0 0 0
note: bit0 à Q1,bit1 à Q2,bit2 à Q3,bit3 à Q4,bit4 à Q5, bit5 à Q6, bit6 à Q7
Q1: Scapacitor1, Q2:Scapacitor2, Q3:Scapacitor3, Q4:Scapacitor4, Q5:Scapacitor5,
Q6:Scapacitor6, Q7:Scapacitor7
Dell P1230 M25P