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GRUNDIG Service
TDA9885; TDA9886
C VAGC(pos)
TOP
TAGC
14 (15)
C AGC(neg)
TUNER AGC
VIF2
2 (31)
VIF1
1 (30)
SIF2
24 (27)
SIF1
23 (26)
SUPPLY
20 (22)
18 (20)
V P
AGND
(1)Not connected for TDA9885.
Pin numbers for TDA9885HN and TDA9886HN in parenthesis.
(MAC/DEC)
(P ERI P LUG1)
(AM TUNER)
MAC S IGNAL
(AMTUNER)
(P ERI P LUG2)
(FM TUNER)
MAC S IGNAL
(FM TUNER)
SYNCHRO
VIF-PLL
lter
(1)
VAGC
VPLL
19 (21)
C BL
VIF-AGC
RC VCO
VIF-PLL
SINGLE REFERENCE QSS MIXER
INTERCARRIER MIXER
AND AM DEMODULATOR
MAD
OUTPUT
2
SIF-AGC
I
C-BUS TRANSCEIVER
PORTS
C AGC
(6, 12, 13, 14, 17,
19, 25, 28, 29, 32)
13
3 (1)
22 (24)
n.c.
OP1OP2FMPLL
P ERI
TV1
TEA6415C
18
CVBS
1
CVBS
3
CVBS
5
6
CVBS
8
CVBS
10
11
20
(TTX/BTX)
2
D
A
T
external reference signal
or 4 MHz crystal
REFAFC
DIGITAL VCO CONTROL
AFC DETECTOR
SOUND CARRIER
TRAPS
4.5 to 6.5 MHz
TDA9885
TDA9886
NARROW-BAND
FM-PLL DEMODULATOR
10 (9)
11 (10)
7 (5)
12 (11)
SCL
SDA
DGND
SIOMAD
sound intercarrier output
and MAD select
P ERI
TTX
LUMA
PIP
TV2
CHROMA
DEC.
POWER
1 7
16
15
1 4
BUS
DECODER
7
4
9
A
P ROG
CLOCK
V
CC
2 - 40
(18) 17
CVBS
video output: 2 V (p-p)
[1.1 V (p-p) without trap]
(7) 8
AUD
audio output
AUDIO PROCESSING
(3) 5
DEEM
AND SWITCHES
de-emphasis
network
AFD
(4) 6
C AF
4 (2)
MHC108
FM-PLL
lter
MAC
GND
13
12
T
E
A
6
4
1
5
C
19
G
N
D
Chassis PE
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