Block Diagram - Amp/Video Section - Sony HCD-RG190 Service Manual

Q Q
3 7 6 3 1 5 1 5 0
7-3. BLOCK DIAGRAM – AMP/VIDEO Section –
BASS AGC
F
(Page 22)
IC251 (EXCEPT RG290: MX) IC441 (RG190)
IC251 (RG290: MX) IC441 (RG290)
OUT
E
BUFFER POWER AMP
(Page 22)
MUTING STANDBY SWITCH
Q251
R-CH
MUTING
CONTROL SWITCH
Q261
21
T E
L 1 3 9 4 2 2 9 6 5 1 3
(RG290: MX)
SBSO, WFCK,
SCOR, EXCK SBSO
B
SCHMITT
WFCK
TRIGGER
(Page 21)
SCOR
IC1005
EXCK
DQ1 – DQ4
A0 – A7
D-RAM
IC1002
WE 3
OE 22
RAS 4
CAS 23
w w w
HCD-RG190/RG290
+
Q489
TH441
OVER LOAD TEMPERATURE
DC DETECT
DETECT DETECT
Q481, 482
Q441 Q483, 484
+
R-CH
+ +
RG190: AEP/
RG290: AEP, UK, MX
5
SYSTEM CONTROLLER
IC901 (3/4) (EXCEPT RG290: MX)
IC901 (3/4) (RG290: MX)
46 48 49
CD GRAPHICS DECODER
IC1001
VIDEO AMP
3 DATA VOUT 44
IC1006
5 SFSY
4 SBSY
VIDEO MUTING
2 CLCK
Q1010
VD0 – VD3
GDET 37
LEVEL SHIFT
MUTE 6
Q1005, 1009
VA0 – VA7
LEVEL SHIFT
XRESET 54
Q1002, 1006
13 XWE
NTSC/PAL
28 XOE DEN 52 SELECT SWITCH +3.3V
Q1001
14 XRAS
26 XCAS
59 60
X102
14.31818MHz
x a o
y
. i
http://www.xiaoyu163.com
R-CH
–1
–2
R-CH
RY441
RELAY B+
FAN MOTOR
R-CH DRIVE
Q043 – 045
D035
PROTECTOR RELAY DRIVE
Q485 Q486, 488
PROTECT
+
DETECT
Q487
64
Q Q
3 7 6
41
RDS-DATA
RDS-CLK
Abbrivation
MX
R-ch is omitted due to same as L-ch.
SIGNAL PATH
u 1 6 3
.
23 23
http://www.xiaoyu163.com
2 4
8 9 9
HP IN
C
(Page 22)
J701
PHONES
R-CH
JK441
+
L
–
SPEAKER
–
R
+
M001
M
(FAN)
FAN MOTOR
DETECT
Q046
PROTECT
G
(Page 24)
3 1 5 1 5 0 8 9 2
J803
VIDEO OUT
(Page 22)
RDS-DATA, RDS-CLK
D
(RG190: AEP/RG290: AEP, UK)
: Mexican model
: TUNER (FM/AM)
: VIDEO
m
c o
HCD-RG190/RG290
Ver. 1.1
2
8 9 9
4 9 8 2 9 9