
HCD-RG190/RG290
23
23
HCD-RG190/RG290
7-3. BLOCK DIAGRAM – AMP/VIDEO Section –
OUT
BUFFER
E
BASS AGC
F
POWER AMP
SBSO, WFCK,
SCOR, EXCK
B
MUTING
Q251
OVER LOAD
DETECT
Q441
R-CH
STANDBY SWITCH
Q489
DC DETECT
Q481, 482
IC251 (EXCEPT RG290: MX)
IC251 (RG290: MX)
IC441 (RG190)
IC441 (RG290)
+
+
TEMPERATURE
DETECT
Q483, 484
R-CH
R-CH
R-CH
TH441
+
MUTING
CONTROL SWITCH
Q261
O-SYS-XMUTE
21
O-STK-MUTE
5
I-PROTECTOR
64
+
R-CH
PROTECTOR
Q485
RELAY DRIVE
Q486, 488
+
PROTECT
DETECT
Q487
FAN MOTOR
DRIVE
Q043 – 045
FAN MOTOR
DETECT
Q046
RY441
C
HP IN
G
PROTECT
–1
–2
R
L
+
–
–
+
RELAY B+
D035
M
M001
(FAN)
SPEAKER
PHONES
JK441
R-CH
J701
SYSTEM CONTROLLER
IC901 (3/4) (EXCEPT RG290: MX)
IC901 (3/4) (RG290: MX)
: TUNER (FM/AM)
: VIDEO
SIGNAL PATH
R-ch is omitted due to same as L-ch.
49
O-CDG-MUTE-DATA
/I-RDS-DATA
48
I-CDG-DET
46
O-VMUTE
41
O-CDG-RST
/I-RDS-CLK
D-RAM
IC1002
VIDEO AMP
IC1006
DQ1 – DQ4
VIDEO MUTING
Q1010
NTSC/PAL
SELECT SWITCH
Q1001
WFCK
SBSO
SCOR
EXCK
5 SFSY
3
44
DATA
4 SBSY
CLCK
2
XWE
13
3
CD GRAPHICS DECODER
IC1001
SCHMITT
TRIGGER
IC1005
25, 27, 29, 30
1, 2, 24, 25
VD0 – VD3
A0 – A7
15 – 22
9 – 12, 14 – 17
VA0 – VA7
WE
XOE
28
22
OE
XRAS
14
4
RAS
XCAS
26
23
CAS
VOUT
37
GDET
6
MUTE
J803
VIDEO OUT
LEVEL SHIFT
Q1005, 1009
54
XRESET
52
DEN
LEVEL SHIFT
Q1002, 1006
+3.3V
60
XO1
59
XI1
X102
14.31818MHz
(RG290: MX)
Abbrivation
: Mexican model
MX
RG190: AEP/
RG290: AEP, UK, MX
D
RDS-DATA, RDS-CLK
RDS-DATA
RDS-CLK
(RG190: AEP/RG290: AEP, UK)
(Page 22)
(Page 22)
(Page 21)
(Page 24)
(Page 22)
(Page 22)
Ver. 1.1
Summary of Contents for HCD-RG190
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