Tuner - Grundig Toronto 26-7831 T Service Manual

GRUNDIG Service

Tuner

(Onboard, PCB Index R-3)
Vorabversion
Preliminary Version
VDD_Antena
C119
C120
56p
1n
L111
220n
S100
C172
RFin
RFIN
C126 L112
H.P.F
220n
56p
C177
NC
3rd @40MHz H.P.F can attenuate 40dB @ 250KHz
RSSI/AMBILIGHT/2ND LED
RSSI
VDD33
L113
VDD33_LDO
120R/100MHz
VCC3.3-Sil_T
VCC5V
IC101
NCP1117DTAT5G
3
VIN VOUT
1
ADJ
C183
1u
R140
R141
Pd=1W
GND
Thermal pad required
3
V
in
+
+
AP1117
Thermal
Shutdown
L103
C106 27n
2p2 C167
N05
2p2
L106
47n
D100
L109
BAV99
N06
C113 27n
2p2 C114
2p2
L114
PCB Rule
1u
i
56p
C173 33p RFin1
C174
C175
82p
270p
L118
220n
L116 L117
150n 330n
C132
1n
VDD33
R123
TU_RSSI
NP/0R
R105
NC/75K
C136 C137
VDD33
R106
1u 4u7
NC/75K
VDD33
VDD33
VDD33
C141 C142 C143
680p 680p 1u
VDD33
C163
1u C146
220p
VDD33
600mA
VDD33_LDO
2
2
TAB
C186
91R C185
C184 4.7u
100n
220u/16V
150R
GND
2
V
out
+
1.25V
CURRENT
1
LIMIT
GND
+
(FIXED)
Adj
1
C108
22p
N07
C107
N01 L107
39n
R100
8p2
150R
N08
C116
VDD33 22p
R102
150R
C115
N02
8p2
RFLBOUT_N
RFLBOUT_P
VDD33
VDD33
C127 C128
680p 10n
C178
56p
TR100
1 2
TR1_5
4 3
TR1_4
DXW21BN7511T
RFAGC_CP
C144 C133
100n 680p
R108
10K C147
33p
C170
100n
R112
VDD33
100R
C150
2u2
VDD33
R116
VDD33
100R
C164
1u
VDD33
VDD33
2 - 
L104
N03 C109
39n
8p2
R101
C166
150R
15p
VDD33
L110
R103
150R
39n
C117 N04 C118
15p 8p2
0.16mA
0.16mA
C125 IC100
68p
1
49mA
VDD3V_LNAVGA
2
TR1_1
LNAINN
C131
3
NC TR1_3
LNAINP
4
16mA
VDD3V_PDT
5
RSSI
6
RFAGC_CP
7
0.47mA
VDD3V_CMP
8
LOOPOUTP
9
LOOPOUTN
10
45mA
VDD3V_LOOP
11
45mA
VDDPLL1
12
VCTRL1
VCTRL1
13
11mA
VDDVCO1
14
2mA
VDD_PFDCP1
15
2mA
VCCXTAL
16
XTALOUT
R124 22K
XTALB
R126 130K
XTALA
X100
R127
750K
16MHz XTAL
C152 C153
22p 22p
C159 C160
100n 680p
C155
2u2
C165
100n
Chassis SE
VDD33
VDD33
VDD33
C104
C102
C103
22p
100n
68p
MSR1200
R114
4K3
R115
C154
2K2
220p
C156
5p6
C157
1n8