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Model
QT-CD161H (serv.man2)
Pages
40
Size
1.91 MB
Type
PDF
Document
User Manual / Operation Manual
Brand
Device
Audio / Portable
File
qt-cd161h-sm2.pdf
Date

Sharp QT-CD161H (serv.man2) User Manual / Operation Manual ▷ View online

QT-CD141H/161H/162H
– 9 –
In the tuner test mode the band is FM, and the mode is FM STEREO in case of start-up.
As with the ordinary mode, when the PRESET 
 key is pressed for 1ch of preset memory CH, maximum CH is set. When the
PRESET 
  key is pressed for maximum CH of preset memory CH, 1ch is set.
The BAND key is valid. As in the ordinary mode, the band/FM MONO/STEREO mode can be switched.
To exit from the tuner test mode, turn off the power to the microcomputer.
Indication
The indication is the same as that of ordinary operation. However,
when the test mode is turned on, the indication shown left lights
for one second.
Preset frequencies for various destinations (random preset memory)
BAND (CH)
U.S.A.
EUROPE
GENERAL 1
GENERAL 2
 1
FM 87.5M
FM 87.50M
FM 87.50M
FM 87.5M
 2
FM 108.0M
FM 108.00M
FM 108.00M
FM 108.0M
 3
FM 98.0M
FM 98.00M
FM 98.00M
FM 98.0M
 4
FM 90.0M
FM 90.00M
FM 90.00M
FM 90.0M
 5
FM 106.0M
FM 106.00M
FM 106.00M
FM 106.0M
 6
AM 530K
AM 522K
AM 531K
AM530K
 7
AM1720K
AM1620K
AM1602K
AM1620K
 8
AM 990K
AM 990K
AM 990K
AM 990K
 9
AM600K
AM 603K
AM 603K
AM 600K
10
AM 1400K
AM 1404K
AM 1404K
AM 1404K
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Note:
  The unit shown in table is Hz. K is x1000. M is x1,000,000.
  The slash indicates that data are not stored in the memory.
  FM is stereo mode.
LCD TEST MODE
When the LCD test mode is turned on, all the segments of LCD light.
Indication
QT-CD141H/161H/162H
– 10 –
NOTES ON SCHEMATIC DIAGRAM
  1. Tuner
(  ): AM mode
Marking except for (  ): FM mode
2. CD
(  ): Play mode
Marking except for (  ): Stop state
3. Deck section
(  ): Record mode
Marking except for (  ): Playback mode
Display / Control section:
(  ): Active state
Marking except for (  ): CD Function mode at stop state
• Schematic diagram and Wiring Side of P.W.Board for this
model are subject to change for improvement without prior
notice.
• 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.
• Resistor:
To differentiate the units of resistors, the 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 an
ohm resistor. The resistor designated "Fusible" is a fuse type
resistor
• 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
• The indicated voltage in each section is the one measured by
Digital Multimeter between such a section and the chassis
with no signal given.
SW102
RECORD/PLAYBACK
PLYBACK—RECORD
SW201
FUNCTION/POWER
TAPE—TUNER— CD/
OFF—ON
SW202
X-BASS
OFF—ON
SW203
SURROUND(162H ONLY)
OFF—ON
SW501
TUNER UP
OFF—ON
SW502
TUNER DOWN
OFF—ON
REF. NO
DESCRIPTION
POSITION
SW503
BAND
OFF—ON
SW504
MEMORY
OFF—ON
SW505
PRESET DOWN
OFF—ON
SW506
PRESET UP
OFF—ON
SW507
CD LID OPEN/CLOSE
OFF—ON
SW601
TAPE MAIN
OFF—ON
SW702
PICKUP IN
OFF—ON
Figure 10 TYPES OF TRANSISTOR
REF. NO
DESCRIPTION
POSITION
KTA1266 GR
KTA1273 Y
KTC3194 Y
KTC3199 GR
KTC8050 D
KRA102 M
KRA109 M
KRC104 M
KRC107 M
FRONT
VIEW
E  C  B
(S)(G)(D)
(1) (2) (3)
QT-CD141H/161H//162H
– 11 –
Figure 11 BLOCK DIAGRAM (1/3)
62 51
37
46
56
39
55
38
54
33
53
32
11
8
4
2
~
+5V
FOCUS COIL
TRACKING COIL
PICKUP UNIT
18
28
29
13
3
25 26
5
20
6
21
49
50
52
53
51
54
Q804
+5V
23
6
63
43
64
10
44
12
45
9
14
13
43
16
44
17 18 19 20
15
32
40
1
61
58
57
CL, DAT, SELIAL CONTROL
CONSTANT
VOLTAGE
REGULATOR
16
27
31
28
15
30
29
M
M
M702
SLED
MOTOR
M701
SPINDLE
MOTOR
1 2 3 4
+7.4V
(CD)
SECTION
MAIN
TO
VVDD
XIN
XOUT
VDD
XVDD
EFMO
EFMIN
CLV+
CLV–
V/P
HFL
TES
TOFF
JP–
JP+
TGL
RES. CQCK. COIN
SQOUT. RWC. WRQ
LCHO
IC802
LC78622E
SERVO/SIGNAL
CONTROL
16.93MHz
XL801
SLI
SLC
CV+
JP–
DRF
CE
DAT
CL
CLK
DEF
SLD
SLEQ
SPO
FD
TO
SL+
SL–
F
E
FIN1
FIN2
64
62
+5V
Q801
VCC1
LDD
LASER
DRIVER
SERVO AMP.
LA9240M
IC801
30
1
+7.4V
9
7 8
22
24
10
25
11
IC803
LA6541
FOCUS/TRACKING
/SPIN/SLIDE
DRIVER
TO MAIN
SECTION
TO MAIN
SECTION
QT-CD141H/161H/162H
– 12 –
Figure 12 BLOCK DIAGRAM (2/3)
6
5
8
2
10
11
12
5
1
8
9
6
12
IC202
LA4597
POWER AMP.
L
VOLUME
X-BASS
SW202
A,B
SW203
A,B
SURROUND
VR201
A,B
STANBY
Q201
Q202
Q251
R
2
1
3
IC203
KIA7808P
VOLTAGE
REGULATOR
+B2
+B1
SP501
SPEAKERS
SP502
SO601
SW201-C
POWER/
FUNCTION
AM / FM
SELECT
+B
FM +B
SW201-D
POWER/
FUNCTION
RADIO
TAPE
REC
POWER/
FUNCTION
SW201-A,B
FROM TUNER
SECTION
IC2-9,10PIN
CD
REC/P.B
SW102
A,F
P. B
REC
IC101
EQULIZER
AMP.
BA331IL
REC
REC
P.B
P.B
P.B
L
R
L
R
SW102
REC/P.B
B.D
REC/P.B
SW102
C,E
L-CH
REC/P.B
HEAD
FROM
CD/DISPLAY
SECTION
R-CH
ERASE
HEAD
SW102-H
REC/P.B
BIAS
OSC.
Q351
L301
SW201-G
REC/P.B
+B1
M601
TAPE
MOTOR
SW601
MAIN
D651~D654
RECTIFIER
F651
T1.25A L 250V
TUNER
+B
BACK UP
+B
T601
POWER
TRANSFORMER
BATTERY
DC12V
["D" SIZE (UM/SUM-1,
R20 or HP-2)BATTERYx8]
BATTERY
DC3V
["AA" SIZE (UM/SUM-3,
R6 or HP-7)BATTERYx2
FOR TUNER MEMORY]
AC INPUT
AC 230-240V
50Hz
L-CH
R-CH
4
6
2
5
3
7
8
IC201
KIA4558S
SURROUND
AMP.
L
R
162H
ONLY
J201
HEADPHONES
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