Sharp GF-8989H - Component Replacement and Mechanical Tasks; Power IC (IC205) Replacement; Dial Cord Stringing Procedure

ST.IND
[OOO0CO0}
(elelelerele)
ROD. ANT
Pe Jer
B.P.F FM RF AMP RF COIL FM_MIXER — FM IF FM IF AMP
L2
ar @)—Lts Fy) (es)
Oo o SW
o Mw
o tw
swiol-! (<2)
BAND SELECTOR
SWITCH
SWIOI-H
BAND SELECTOR
SWITCH
SW ANT COIL AM CONVERTER AM IF AM IF +8
Go) 02} —Ce)
Dioz FM,
sw oN,
MW)
AN Lw__ SWIOI-G S
Mw ANT +¢ +B © BAND SELECTOR QL!08
Loz Diol
COIL SWITCH
os
swoSC MWOSC LW OSC
Lw ANT coIL COIL CcoiL
COIL
$w204-B
NORMAL.
RECORD/ 2 g-—REC EQ|
PLAYBACK £— O
HEAD 9
VR203
REC EQ
METAL peeies| REC LEVEL
528i sw20i-B8 AbNUST: 1¢ 203
EXT.
MIC
DOLBY
NR
PB SENSITIVITY $w202-c
R-ch
ADJUST
OFF
RADIO
9 O
vRr2o! O o G21)
IN MIC sw203-8 6 Lt | :
bovey nr ON MUTING
vR{301
REC] VOL. VR205
207 LED INDICA |TOR
LEVEL ADJUST
REC AMP
'¢
201
ALC
AND
APSS)
=
O
fdemfd
o
Og
RECORD/
MUTING
sw2ol-H
sw20l-u
PLAYBACK
SOCKET REC/PB AMP sw2oi-! sw2ol-k
oes o 3
16204 ;
DOLBY NR
IN
MIC
sw202-8
MUTING,
RADIO,
L-ch |
J202
EXT. MIC
REC AMP
sw20l-E
RECORD/ -® SW204-k
ERASE
HEAD
ADJUST
REC LEVEL
IN MIC is | [-
Sw2oi-G
BEAT CANCEL
Sw206
ALC SWITCH
Sw2ol-L
°
as
—29—
LEVEL AMP
Q2I7
Q2i8
BIAS OSC
SW2O0I-N
VOLTAGE
REGLATOR
PLUNGER
DRIVE
CIRCUIT
@2i9
Q220
Q22!
i
INDI HE
INDICATOR!
\7
\
d2i5_ 0214 023
O2i2 021i
Z
Figure 29 BLOCK DIAGRAM
Abbildung 29 BLOCKSCHALTBILD
Figure 29 DIAGRAMME SYNOPTIQUE
a
|BATTERY
JINDICATOR
2/0208;
RIPPLE
FILTER
SWITCH
J204 sP3
MIMIC s ig TWEETER
SPI
APSS | 3
INMIC REC C WOOFER
MUTING
MUTING
R-ch
S O
@) a J205
EXT. SP
O er]
ae
|
_
1€205 o J207
POWER AMP O -71 HEADPHONE
5 |
|
|
‘4 J
O
O
: J206
EXT. SP
MUTING L-ch
SP2
0204 S
TEREO C WOOFER
INDICATOR
DOLBY SWITCH | 3 [ | sP4
$W203-A TWEETER
D203
DOLBY
INDICATOR
RECTIFIER POWER TRANS
$9,301
T301 Mall
soclkeT
|
|
MAIN |
SWITCH J
O O -
[ , V-
O O
ae é A sw301
L | BATTERIES
UM/SUMN-I x8 O
PLUNGER 3 I ecooccel] J30l
oCci2v
EXT. POWER
ORIVE
J203
REMOTE
—30—