17PW26 Basic operation The 17PW26 power supply circuitry is very similar to the 17PW20 and operates in the same way. Please refer to the 17PW26 circuit diagram. (next page).
Standby Mode
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The standby circuit is a switch mode supply (IC806) which supplies always 3.3v and 5V supplies (via 5v Regulator IC829) to supply the CPU, NVM, IR & Keypad.
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Magazines L845 22u S822
1 C A
3 7 8 C
News
GNDCAP1 D800
8 1 9 C
1
2
0 n 0 V 8 0 5 0 5 C 2 1
GNDCAP
2 C A
L846
2 3 3 9 C
2 V n 2 k 4
TH1 1 0
8 R
22u
1
Power Factor Correction Choke
Off1
1
TR806 PRI SEC SMPS-RESONANT_PFC
6
N1
V 2 1 + 6 2 8 S
3
1 L R
7
D869
RS1008_SOD123
V u 5 1 2
2 3 3 5 9 9 C C
4 u V 5 9 1 5 2 C
M H 2 1 1 S 2 1 S E J O _ E F A S _ R897 Y A 47k L E R u V 1 5 2
4
5
8 10
11
R1027 100k
6 k 3 7 8 R 4
BAV70
ZCD
W S V
SW_OFF
+400V D882
MTP6N60E/SSP7N60A
2
8
STPS_3P_10L60CFP STPS_3P_10L60CFP Q828
1
BP
S4
8
2
S1
S3
7
3
S2
NC
6
3 3 8 C
4 k 6 0 8 R 1
n 0 V 0 0 1 5
u V 1 6 1
4
IC830 TNY266
E N /U V
7
10
6
11
D
5
122k2
5
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R852 10k
1 7 7 9 8 k 4 9 R 4 C
SW_OFF R910 47k
R857 12k Q838 BC848B
VCC1
R856 4k7
A 1
D826
D892
Useful
R861 10R
5 k 6 8 0 R 1
n 0 V 0 0 1 5
K 2
C3V9_SOD123 1N4148_SOD123
Q816
R1036
8 7 8 C
1N4148_SOD123
100k R855
9
R860 10R
n V k 1 1
8 2 9 C
Q815
SMPS_TFT_EER35_RES
D891
Protection Circuit
2 V n 2 0 5
1
TR810 Q813
Off1
Q807 BC848B
PL822
+400V
Q814 MTP6N60E/SSP7N60A
D878 BSH103 Q837
Q818 BC848B
W S V
2
1N4148_SOD123
Freq
3 k 8 7 9 5 9 8 R 1 C
12
2
Off1
R970 47k
3
1
Half Bridge Circuit 2 2 (Run Supplies)
D875
Freq
4
PL821
1
RS1008_SOD123
R976 470R
5 2 9 C
2
PL820
1
R952 470R
GNDCAP1 Off1
RS1008_SOD123
9
N2
1
2
ZCD
BC858B
9 2 k u V 0 6 0 1 1 1 8 R 6
9 9 8 C
3 L I O C 2 _ 4 Y 8 A L L E R
1 C C V
PL819
1
Q839 220k R979
GNDCAP
D890
C934 1u 450V
2 V n 2 k 4
3 1 8 L P
R1035
Sheet Music C802 1u 450V
1 2
AC3 2R2
PL818
5 8 k 7 9 1 R
PL809
FUSE_RADIAL
7 1 9 C
GNDCAP1
q e r F
1
GNDCAP
V 0 1 5 R A V
22u
4
F800
S824
L817
3
4 1 8 L P
10R
22u
1 m 0 2 8 1 R T X 2
2
S823
L818
4
5 4 9 C
3 AC2
S820 S821
1 2 m V 0 n 0 2 8 0 5 1 R 5 2 X 1 T 2
100uH
Documents
4
4 4 9 C
V n 0 5 0 2 5 1
L802
AC4
5 1 1 8 L P
2 V n 2 k 4
AC1
GBU4M
210u L837
2 V n k 2 4
S819
BC858B Q811
R972 1k R863
4
n V 0 2 3 1 6
Not useful n 4 V 0 0 0 9 8 5 1 C
1 7 9 R
7 4 R 2 0 4 8 C
1N4148_SOD123 D857
3
VFB
STPS_3P_10L60 D881
2k2
R1017
13
3
14
2
15
1
16
BYV27-200
Q827
n V 1 k 1
STPS_3P_10L60CF +12SV
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LC7.2E LA
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17PW26 Socket connections
PL816 to C PL801
to vote Standby Standby 2.9V 2.9V – RunSign 0Vup from from CPU CPon U this title