Block Diagram - Audio/Video Section - Sony HCD-GX355 Service Manual

HCD-GX355/GX555/RG270/RG475/RG575
Ver. 1.1
6-2. BLOCK DIAGRAM – AUDIO/VIDEO Section –
(MX)
JK801
MIC 1
JK802
+9V
MIC 2
JK802
MIC (E2, E51, AR)
(E2, E51, AR)
J751
R-CH
AUDIO IN
HP IN
(Page 23) E
CD-L
(Page 21) A
FM/AM TUNER PACK
FM 75Ω
FM ANT
COAXIAL
ANT GND
AM ANT
AM
LC72121 CLK
ANT GND
L-CH
HP1
(PB)
(DECK-A)
R-CH R-CH
BIAS OSC
L201
L-CH
HRPE1
R-CH R-CH
(REC/PB/ERASE)
(DECK-B)
ERASE
PB MUTING REC MUTING
Q209 Q205, 207
R-CH
Q203
90
HCD-GX355/GX555/RG270/RG475/RG575
VR801
MIC LEVEL
MIC AMP MIC AMP
IC801 (1/2) IC801 (2/2)
MUTING
(MX)
Q801
VR851
ECHO AMP
ECHO LEVEL IC802
MIC IN
HP/AUX IN
63 MD L
1 CD L
TUNER-L
61 TUNER L
TUNER-R R-CH
3 TAPE L
DO
LC72121 DI
DI
LC72121 DO
CLK
CE
LC72121 CE
TUNED
TUNED
STEREO
STEREO
TU-MUTING
TU MUTE
R-D
RDS DATA
R-C
RDS CLK
(AEP, UK, EE)
7 PB OUT1
9 TAPE A1
11 TAPE B1
BIAS OSC
Q201
REC BIAS
SWITCH +9V
Q231, 232
R-CH
91 67 66 65 68 69 70 71 72 18
(AEP, UK, EE)
(MX)
B
(Page 21)
58
TONE OUT1 37
R-CH
FEED BACK
SWITCH
Q141
35
VOL OUT1 33
36 VIN1
SW OUT 25
INPUT SELECT,
TONE CONTROL,
ELECTRICAL VOLUME
(GX555/RG475/RG575)
IC101
REC OUT1 15
19 18 40 55
BAND-PASS
FILTER
Q111, 112
D923 D921
82 81 1 2 92 93 94
SYSTEM CONTROLLER
IC901 (2/4)
22 22
CD GRAPHICS
DECODER
IC1001
SBSO VIDEO AMP
3 DATA VOUT 44
SCHMIT
IC1006
WFCK
TRIGGER 5 SFSY
SCOR
IC1005
4 SBSY
EXCK
2 CLCK VIDEO MUTING
Q1010
D-RAM
IC1002
XO1 60
X1002
14.31818 MHz
XI1 59
DQ1 – DQ4 VD0 – VD3
GDET 37
NTSC/PAL
DEN 52 SWITCH
A0 – A7 VA0 – VA7
Q1001
LEVEL SHIFT
MUTE 6
Q1005, 1009
WE 3
13 WE
OE 22 28 OE
LEVEL SHIFT
RAS 4 14 RAS
RESET 54
Q1002, 1006
CAS 23 26 CAS
DBFB
G (Page 23)
• Abbreviation
VOL OUT1
AR : Argentine model
C (Page 23)
E2 : 120V AC Area in E model
E51 : Chilean and Peruvian models
EE : East European model
SW OUT
D (Page 23)
MX : Mexican model
• R-ch is omitted due to same as L-ch.
CAPSTAN/REEL
MOTOR DRIVE
Q341, 342
(MX)
PLUNGER DRIVE
(DECK-A)
Q345, 346
PLUNGER DRIVE
(DECK-B)
Q343, 344
63 60 59 57 58 85 86 87
I-TAPE-A-STAT 88
I-TAPE-B-STAT 89
I-REEL-A 83
I-REEL-B 84
J803
VIDEO OUT
VMUTE
CDG-DET
CDG/_BGC
MUTE_DATA
CDG-RST
•
SIGNAL PATH
: TUNER
: CD PLAY
: TAPE PLAY (DECK-A)
: TAPE PLAY (DECK-B)
: REC
: AUX IN
: MIC
: VIDEO
TAPE MECHANISM
DECK BLOCK
M M
(CAPSTAN/REEL)
(DECK-A)
(DECK-B)
A-HALF
A-MODE
REC (REW)
B-HALF
B-MODE
REC (FWD)
A-PHOTO
B-PHOTO