Circuit Description - Sherwood R-725/RDS Service Manual

Audio/video pro-logic receiver
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CIRCUIT DESCRIPTION
1C301 : CXP82840
1. Pin Description
GRID
SEGMENT
SEGMENT
NromwmDnwonrtrranr oo
SBE6SESSOGRRLHTHLSAKAAe
See
LLEEEEE
LET EILE LETT Ty
{oXOSOBLOTIOELOSIOAOSIO2O
NOVES/BEE7(BEKB5)/041ESE216')
G7 O-—
@0)—+O
GRID eae ae
ae
NC O—
(78)—+O
POWER DOWN O—+
77)—+O
RDS CHECK O—+
(764) —+O
RDS START O—+(6)
75)—-O
ENCODER UP O—+(7)
?4)—+O
REMOTE O—+(8)
73—+O
ENCODER DOWN O—+(9)
?3—-O
NC O—(10)
?71)—+O
NC O—(11)
(70)—+O
MAIN
- MUTE O-«—(12)
69)—+-O
AMP DATA O=—(13)
68)—+O
AMP CLOCK O-—(14)
67)—-O
NC O—(15)
CXP-82840
66)—+O
INt O—+(6)
63—-O
kevin | N2 O-*G2
64)—-O
IN3 O—(18)
63)—+O
IN4 O—+(19)
62—-O
DIGI- LINK O--+(0)
61\—+O
MODEL-OPTION O—+(21)
)
RDS CLOCK O-—(22)
69—-O
RDS DATA O-—(23)
G3)—+O
CENTER- MUTE O-—(24)
67)—+O
REAR MUTE O-—@5)
66)—+O
7001- DATA O«—(26)
65)—+O
7001- CLOCK O+—@7)
64)—+O
VREF O—@8)
O
SLEEP O—+(29)
62)—+O
PROTECT O—+(0)
6)—-O
ae
eee:
Pecueusee:
OomzZzana
ZQr
QoQoaqonanazauww
eeOnSee 2 2228858856
wwf
OE
uw
Or
20Ra0
rs
c
xX
Oa
q
aa
Sy
> QB
tw
Ww
o
OF
Zu
0a
-
Oo
ae
:
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=
fan}
=>
Yn
P19
P18
P17
P16
P15
P14
P13
P12
pir
|
eo |e
P9
W
P8
P7
P6
P5
P4
P3
p2
Py
ST-BY RELAY
NC
TUNER MUTE
C7821 C.E
TC 9299 C.E
LM 7001 C.E
VCR2 F/R
AMP MUTE
NC
CINEMA BASS
4094A C.E

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