Sharp CD-C491H (serv.man4) Service Manual ▷ View online
– 21 –
CD-C491H
RDS
(
R
a
d
io
Da
ta
S
y
s
te
m
) O
P
E
R
A
T
IO
N
R
e
c
e
iv
ing FM
S
ta
tions
wit
h R
D
S
(
R
a
d
io
Data System)
RDS is a broadcasting service which a growing number of
FM stations are now providing. It allows these FM stations
to send additional signals along with their regular programme
signals. For example, the stations send their station names,
and information about what type of programme they broad-
cast, such as sports or music, etc.
When tuned to an FM station which provide the RDS service,
the RDS will appear, the station frequency (and then the
station name if sent) is displayed.
The TP (Traffic Programme) will appear on the display when
the received broadcast carries traffic announcements, and
the TA (Traffic Announcement) will appear whilst a traffic
announcement is being received.
EON will appear whilst the EON (Enhanced Other Networks
information) data is being broadcast.
Note:
When the TP and TA appear at the same time, an announce-
ment is being made.
When only the TA appears, an announcement is not being
made.
Information Provided by RDS
PS (Programme Service):
S
tat
ion
na
m
es com
m
only
known will be displayed. "NO
P
S
" appear
s if
no
sign
al
is
being sent.
PTY (Programme Type):
Station Frequency:
Programme type will be dis-
played.
"NO PTY" appears if no signal
is being sent.
Station frequencies.
With the CD-C491H, you can display two types of RDS ser-
vice. To show them in the display, press the DISPLAY MODE
button.
Each time you press the DISPLAY MODE button, the display
will change to show the following information.
DISPLAY
MODE
Descriptions of the PTY (Programme Type) codes, TP (Traf
-
fic Programme) and TA (Traffic Announcement)
With the CD-C491H, you can search for and receive the
following PTY, TP and TA signals.
NEWS:
News
AFFAIRS:
Topical programme expanding on the cur-
rent news or affairs
INFO:
Programmes on medical service, weather
forecast, etc.
SPORT:
Sports events
EDUCATE:
Educational programmes
DRAMA:
Radio plays
CULTURE:
Programmes on national or regional cul-
ture.
SCIENCE:
P
ro
g
ra
m
m
e
s
on
n
a
ti
on
al
s
c
ie
nc
es
a
n
d
technology
VARIED:
Other programmes like comedies or cere-
monies
POP M:
Pop music
ROCK M:
Rock music
M.O.R. M:
M
idd
le-
of
-t
he-
road m
usic
(usuall
y call
ed
"easy listening")
LIGHT M:
Light music
CLASSICS:
Classics
OTHER M:
Other music
ALARM:
Emergency broadcasts
NONE:
No programme type (receive only)
TP:
Broadcasts which carry traffic announce-
ments
TA:
T
raf
fi
c
an
noun
cem
en
ts
ar
e bei
ng
b
roa
d-
cast at present.
Note:
When the unit is in the EON stand-by mode and a pro-
gramme is selected, the unit will display "TI" instead of
"TA".
DVD 1
/VCR 1
DVD 2
/VCR 2
DVD 1
/VCR 1
DVD 2
/VCR 2
When you connect this unit to a DVD player which is playing
a
d
is
c
w
it
h
t
h
e
t
ra
d
e
m
a
rk
, y
o
u
c
a
n
e
n
jo
y
realistic, powerful sound by playing back the recorded signal
through 6 speakers with the sound coming from the front
left, front right, centre, surround left, surround right and sub
woofer speakers.
To listen to a disc using the Dolby Digital mode:
1
Connect a DVD player. (See page 42.)
2
Press the DVD 1/VCR 1 or DVD 2/VCR 2 button to select
"DVD 1" or "DVD 2".
3
Start the DVD player.
Note:
When the Dolby Digital surround mode is being used, the
equalizer will be set to FLAT.
Type of Dolby digital signal
There are different types of Dolby digital signals. The type of Dolby digital signal being input into this unit can be checked
in the display.
Display
Channels available
Display
Channels available
Normal
PCM
playback
Front (L, R) + surround
(L, R)
Centre
only
(monaural)
Front (L, R) + centre
Front (L, R)
(When the surround mode
is set to Normal or
Phantom, sound will also be
heard from the surround
speakers.)
Front (L, R) + centre +
surround (monaural)
Front (L, R) + surround
(monaural)
Front (L, R) + centre +
surround (L, R)
If a low frequency sound effect (Low Frequency Effect) contains a Dolby digital signal, "LFE" will light in the display.
When this "LFE" is lit, low frequency signals will be output from the sub woofer.
DO
LBY
DI
G
IT
A
L
S
URRO
UND E
FFE
CT CO
NTRO
L
This product allows you to enjoy 4 surround modes.
Normal mode:
When you play a sound source that has the
(5
.1
ch
an
ne
ls
)
o
r
tr
a
d
e
m
ar
k
s
, yo
u ca
n en
jo
y
surround sound using all 6 speakers.
Phantom mode:
When you play a sound source that has the
o
r t
ra
d
e
m
a
rk
s
,
y
o
u
c
a
n
e
n
jo
y
s
u
rr
o
u
n
d
s
o
u
n
d
using 5 speakers, but not the centre speaker.
Virtual Dolby Surround:
You can enjoy a three-dimensional surround stereo image
using just the 2 front speakers.
Enhanced Virtual Surround:
Y
o
u
ca
n e
n
joy
sur
round
sound,
using only t
he
2 f
ront
speakers, but this mode increases the three-dimensional
stereo image effect even more.
CD-C491H
– 22 –
SW1
OPEN/CLOSE
ON—OFF
SW2
MECHA UP
ON—OFF
SW3
DISC NUMBER
ON—OFF
SW4
PICKUP IN
ON—OFF
SWD01
VOLUME JOG
ON—OFF
SWD02
JOG
ON—OFF
SWD03
X-BASS
ON—OFF
SWD04
PRE EQ.
ON—OFF
SWD05
MENU
ON—OFF
SWD06
ITEM
ON—OFF
SWD12
TUNING UP/CUE
ON—OFF
SWD13
STOP
ON—OFF
SWD14
NORMAL EDIT
ON—OFF
SWD15
HIGH EDIT
ON—OFF
SWD16
REC/PAUSE
ON—OFF
SWD17
F-PLAY
ON—OFF
SWD23
QSOUND
ON—OFF
SWD26
VIRTUAL
ON—OFF
SWD27
PHANTOM
ON—OFF
SWD28
NORMAL
ON—OFF
SWD29
BYPASS
ON—OFF
SWD30
TUNING DOWN/REWIND
ON—OFF
SWD31
CD PAUSE
ON—OFF
SWD32
REVERSE MODE
ON—OFF
SWD33
R-PLAY
ON—OFF
SWD34
CLOCK
ON—OFF
SWD35
MEMORY
ON—OFF
SWD36
TIMER
ON—OFF
SWD37
SLEEP
ON—OFF
SWD38
CLEAR
ON—OFF
SWD39
DVD/VIDEO 1
ON—OFF
SWD40
DVD/VIDEO 2
ON—OFF
SWD41
TAPE 1/2
ON—OFF
SWD42
TUNER/BAND
ON—OFF
SWD43
CD
ON—OFF
SWD44
RDS PTY PT
ON—OFF
SWD45
RDS EON
ON—OFF
SWD46
RDS DISPLSY
ON—OFF
SWD47
RDS ASPM
ON—OFF
SWD48
POWER
ON—OFF
SWD50
DISC 1
ON—OFF
SWD51
DISC 2
ON—OFF
SWD52
DISC 3
ON—OFF
SWD53
DISC SKIP
ON—OFF
SWD54
OPEN/CLOS
ON—OFF
SWM1
TAPE1 Cro2
ON—OFF
SWM2
TAPE2 Cro2
ON—OFF
SWM3
REC FWD
ON—OFF
SWM4
REC RVS
ON—OFF
SWM5
F.A.S
ON—OFF
SWM6
CAM
ON—OFF
•
The indicated voltage in each section is the one measured
by Digital Multimeter between such a section and the chas-
sis with no signal given.
1. In the tuner section,
sis with no signal given.
1. In the tuner section,
( ) indicates AM
< > indicates FM stereo
< > indicates FM stereo
2. In the main section, a tape is being played back.
3. In the deck section, a tape is being played back.
3. In the deck section, a tape is being played back.
( ) indicates the record state.
4. In the power section, a tape is being played back.
5. In the CD section, the CD is stopped.
5. In the CD section, the CD is stopped.
•
Parts marked with “ ” ( ) are important for
maintaining the safety of the set. Be sure to replace these
parts with specified ones for maintaining the safety and
performance of the set.
parts with specified ones for maintaining the safety and
performance of the set.
NOTES ON SCHEMATIC DIAGRAM
•
Resistor:
To differentiate the units of resistors, such symbol as K and
M are used: the symbol K means 1000 ohm and the symbol
M means 1000 kohm and the resistor without any symbol is
ohm-type resistor. Besides, the one with “Fusible” is a fuse
type.
M are used: the symbol K means 1000 ohm and the symbol
M means 1000 kohm and the resistor without any symbol is
ohm-type resistor. Besides, the one with “Fusible” is a fuse
type.
•
Capacitor:
To indicate the unit of capacitor, a symbol P is used: this
symbol P means micro-micro-farad and the unit of the
capacitor without such a symbol is microfarad. As to
electrolytic capacitor, the expression “capacitance/withstand
voltage” is used.
(CH), (TH), (RH), (UJ): Temperature compensation
(ML): Mylar type
(P.P.): Polypropylene type
symbol P means micro-micro-farad and the unit of the
capacitor without such a symbol is microfarad. As to
electrolytic capacitor, the expression “capacitance/withstand
voltage” is used.
(CH), (TH), (RH), (UJ): Temperature compensation
(ML): Mylar type
(P.P.): Polypropylene type
•
Schematic diagram and Wiring Side of P.W.Board for this
model are subject to change for improvement without prior
notice.
notice.
REF. NO
DESCRIPTION
POSITION
POSITION
REF. NO
DESCRIPTION
Figure 22 TYPES OF TRANSISTOR
3
2
1
E
(S)
(1)
C
(G)
(2)
B
(D)
(3)
B
(D)
(3)
C
(G)
(2)
E
(S)
(1)
FRONT
VIEW
FRONT
VIEW
FRONT
VIEW
2SB1375
2SD2012
2SD2012
FRONT
VIEW
KL052UL
LMKD515B
SLR325MG
SLR325VR
SLR505ML
LMKD515B
SLR325MG
SLR325VR
SLR505ML
FRONT VIEW
KV1236Z23 KRA102S
KRA107S
2SC1845 F
2SC2236 Y
2SC2878 A
2SC380 O
2SD468 C
KRA102 M
KRA107 M
KRA107 S
KRC102 M
KRC102 S
2SC2236 Y
2SC2878 A
2SC380 O
2SD468 C
KRA102 M
KRA107 M
KRA107 S
KRC102 M
KRC102 S
KRC104 M
KRC107 M
KRC107 S
KTA1266 GR
KTA1268 GR
KTA1270 Y
KTA1271 Y
KTA1273 Y
KTC3199 GR
KTC3203 Y
KRC107 M
KRC107 S
KTA1266 GR
KTA1268 GR
KTA1270 Y
KTA1271 Y
KTA1273 Y
KTC3199 GR
KTC3203 Y
– 23 –
CD-C491H
8
27
1
2
3
4
5
9
8
8
6
7
20
12
13
24
25
30
31
32
22
22
34
35
36
10
11
27
26
28
29
PU-IN SW
XL1
XIN
LD0
FIN2
JP–
CV+
SLC
SL1
FIN1
E
F
TO
FD
SPO
NC
SLD
SL–
SL+
DRF
CL
DAT
CE
VCC1
6
+5V
PICKUP IN
SW4
FOCUS COIL
TRACKING COIL
M1
DISC
MOTOR
M
M
M2
SLIDE
MOTOR
PICKUP UNIT
9
IC2
LC78622K
SERVO/SIGNAL
CONTROL
+B1
IC3
M56748FP
FOCUS/TRACKING/
SPIN/SLED
DRIVER
IC1
LA9241M
SERVO AMP.
6
1
9
5
+B1
+12V(+B6)
RES. CQCK. COIN
SQOUT. RWC. WRQ
~
~
~
CL, DAT, SELIAL CONTROL/CE
Q93
Q91
Q51
VOLTAGE
REGULATOR
SL+. SL–. DRF
7
3
9
8
7
6
5
4
3
2
1
GND (D)
MECHA UP
GND (D)
DISK NO.
OPEN/CLOSE
GND (D)
M–
M+
GND (M)
9
8
7
6
5
4
3
2
1
CNP10
M
+5V
+B8
62
64
45
36
23
43
31
24
25
10
10
26
58
53
10
12
20
32
40
43
44
53
52
51
54
31
30
29
23
27
16
16
15
41
44
Q1
LASER
DRIVE
Q52
+4.3V
Q81
+7.3V (+B8)
REGULATOR
TO MAIN SECTION
IC81
TA7291S
LORDING MOTOR
DRIVER
XOUT
EFMO
EFMIN
CLV+
JP–
CONT2
CONT1
CONT4
DOUT
VVDD
VDD
LVDD
RVDD
XVDD
SW1
OPEN/CLOSE
SW2
MECHA UP
SW3
DISC No.
M3
LOADING
SOLM1
TO MAIN
SECTION
CNS10
Figure 23 BLOCK DIAGRAM (1/5)
CD-C491H
– 24 –
Figure 24 BLOCK DIAGRAM (2/5)
13
8
10
1
4
6
7
14
TOS
ICA14
GP1F38R
DVD2
DIGITAL
IN
ICA15
TC74HCU04
INVERTER
IN
IN
DVD2
DIGITAL
IN
FROM CD UNIT
4
3
5
8
7
1 6
11 ~ 13 15
+B13
IN
IN
IN
ICA16
TC74HCU15
SWITCH
61
D4-GND
D4-GND
14
13
12
11
D-OUT
DEM0
DEM1
DEM1
16
17
15
SCK
CLK
CLK2L/R
CLK
CLK2L/R
83 79 91
D-IN
CLK2L/R OUT
92
CLK2OUT
97
95
SCK2IN
86
85
62
60
36
4
D3-GND
D-OUT
D-IN
SL/SR OUT
SL/SR IN
ANAROG LCH
4
7
IN
2
1
6
7
IN
6
3
4
5
6
4
5
6
23 24
PWDA
PWAD
AINR+
AINR–
AINL+
AINL–
AINR–
AINL+
AINL–
2
8
8
18
19
20
22
25
1 7 9
10 21
+B13
+B9
AINR–
AINL–
AINL+
IN
IN
TO
MAIN
SECTION
OUT
OUT
OUT
ICA13
AK4520A
A/D,D/A
CONVERTER
ANAROG RCH
ICA11
NJM4580M
LOW PASS FILTER &
DIFFERENTIAL AMP
A-GND
8
4
2
1
8
+B7
A-GND
A-GND
+B7
ICA12
NJM4580M
LOW PASS FILTER &
DIFFERENTIAL AMP
27
LS OUT
RS OUT
RS OUT
26
VIDEO1 IN
VIDEO2 IN
MONITOR
OUT
1
7
3
+B7
2
4
8
6
+B7
ICH51
NJM2246M
SWITCH
QH51
V-GND
LS/RS
OUT
DGTL2
V1/V2
16
+B13
2
DGTL2
9
14
DGTL1
V1/V2
DGTL2
DGTL1
QH52
QH53
DGTL2
V1/V2
SWITCHING
SWITCHING
JA11
JH51
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