Philips 50PUN6233/61 Service Manual page 66

9-4-11 LNB
18V_12V
C249 220NF 16V
C253
18V_12V
3.3NF 50V R227
LNB_EN
R214
LNB_LINEDROP
R215
13/18V_SW
R218
0R05 1/16W
0R05 1/16W
0R05 1/16W
LNB POWER SUPPLY
DVDD3V3 DVDD3V3
R718 R720
10K 1/16W 5% 10K 1/16W 5%
LNB_EN LNB_LINEDROP
R719 R721
NC/100K 1/16W 5% NC/100K 1/16W 5%
LNB_EN:
Low: disable
LINEDROP:
High: enable
Low: 13.3/18.3V
MP8124 Enable Selection
High: 14.3/19.3V
Compensation Selection
D505
L201
1
C250 C298 10uH
FB340M
100NF 25V 10UF 16V
U202
8 4
AGND PGND
11 3
BYPASS SW
12 5
VDD BST
10 6
60.4K 1%
COMP VBOOST
2 7
EN VOUT
1
LINEDROP
9
C245
TCAP
14 13
13V/18V EXTM
MP8124GD  Z
R213
100K 1%
DVDD3V3
R774
10K 1/16W 5%
13/18V_SW
R780
NC/100K 1/16W 5%
13/18V_SW:
High: 18V
Low: 13V
2
C243 C240 C244
10uF 35V 10uF 35V 10uF 35V
D504
FB340M
C248 100NF 25V
22N 25V
C297
D503
FB340M
100NF 25V
R224
DISEQC_OUT
33 OHM 1/16W
TUNER_LNB
TUN_LNB
DISEQC_OUT
18V_12V
LNB_EN
LNB_LINEDROP
13/18V_SW
DVDD3V3
ESD & Surge
Protect
ZD201 ZD202
R216 R217
2.2K 1/4W 2.2K 1/4W
TUNER_LNB 13
TUN_LNB 17
DISEQC_OUT 9
18V_12V 4,5,11,22
LNB_EN 17
LNB_LINEDROP 17
13/18V_SW 17
DVDD3V3 5,6,7,9,10,11,15,17,18,19,21,22
GND 4,5,6,7,8,9,10,11,12,13,15,16,17,18,19,20,21,22
TUNER_LNB
R221
33K 1%
TUN_LNB
ZD203
R225
5.1K 1%