CAUTION: Before servicing the chassis, read the "Important Service Safety Information"
section on page 2 of this manual.
PORTABLE CD PLAYER with MP3,USB,SD and RADIO
STNETNOC
IMPORTANT SERVICE SAFETY INFORMATION
DISASSEMBLY INSTRUCTIONS
BLOCK DIAGRAM
WIRING DIAGRAM
PRINTED CIRCUIT BOARDS
SCHEMATIC DIAGRAMS
EXPLODED VIEW
EXPLODED VIEW PART LIST
SPECIFIACTION
PART LIST17-27
6-8
9-11
12
13
14-16
2
3
4
5
IMPORTANT SERVICE SAFETY INFORMATION
1.
SAFETY PRECAUTIONS
Before returning a unit to the customer, always make a safety check of
the entire unit, including, but not limited to the following items:
a. Be sure that no built-in protective devices are defective and/or have
been defeated during servicing.
(1)
Protective shields ar e provided to protect both the technician and
the customer. Correctly replace all missing protective shields
including any removed for servicing convenience.
(2)
When reinstalling the chassis and/or other assemblies in the
cabinet, be sure t put back in place all protective devices, including,
but not limited to, nonmetallic control knobs, insulating fishpapers,
adjustment and compartment covers/shields and isolation resisto r/
capacitor networks. Do not operate this unit or permit it to be
operated without all protective devices correctly installed and
functioning.
b.
Be sure that there are no cabinet openings through which an adult or
child might be able to insert their fingers and contact a hazardous
voltage. such openings include, but are not limited to, excessively wide
cabinet ventilation slots, and an improperly fitted and/or incorrectly
secured cabinet back cover.
c.
" Leakage Current Hot Check - With the unit completely reassembled,
plug the AC line cord directly into a (EU voltage)V AC outlet. (Do not
use an isolation transformer during this test.) Use a leakage current
tester or a metering system that complies with IEC60990 figure 4. With
the unit AC switch first in the ON position and then in the OFF position ,
measure from a known earth ground (metal water pipe, conduit, etc.),
especially any exposed metal parts that offer an electrical return path to
the chassis. Any current measured must not exceed the following
values:
. for a.c.: U1 = 35 V (peak) and U2 = 0,35 V (peak);
. for d.c.: U1 = 1,0 V.
NOTE: The limit values of U2 = 0,35 V (peak) for a.c. and U1 = 1,0 V for
d.c. correspond to the values 0,7 mA(peak) a.c. and 2,0 mA d.c.
The limit value U1 = 35 V (peak) for a.c. corresponds to the value 70
mA (peak) a.c. for frequencies greater than 100 kHz.
Reverse the unit power cord plug in the outlet and repeat test. ANY
MEASUREMENTS NOT WITHIN THE LIMITS SPECIFIED HERENIN
INDICATE A POTENTIAL SHOCK HAZARD THAT MUST BE
ELIMINATED BEFORE RETURNING THE UNIT TO THE CUSTOMER.
"
(READING SHOULD
NOT BE ABOVE
0.5mA)
AC Leakage Test
DEVICE
UNDER
TEST
2-WIRE CORD
ALSO TEST WITH
PLUG REVERSED
(USING AC ADAPTER
PLUG AS REQUIRED)
d.
Insulation Resistance Test Cold Check
Unplug the power supply cord and connect a jumper wire between the
two prongs of the plug.
Turn on the power switch of the unit.
Measure the resistance with an ohmmeter between the jumpered AC
plug and each exposed metallic cabinet part on the unit, such as
screwheads, antenna, control shafts, handle brackets, etc. When the
exposed metallic part has a return path to the chassis, the reading
should be between 1 and 5.2 megohms. When there is no return path to
the chassis, the reading must be “infinite”. If it is not within the limits
specified, there is the possibility of a shock hazard, and the unit must be
repaired and rechecked before it is returned to the customer.
TEST ALL
EXPOSED METAL
SURFACES
+
LEAKAGE
CURRENT
TESTER
EARTH
GROUND
ANTENNA
TERMINAL
EXPOSED
METAL
PART
2.
PRODUCT SAFETY NOTICE
OM
OHMMETER
Some electrical and mechanical parts have special safety related
characteristics which are often not evident from visual inspection, nor
can the protection they give necessarily be obtained by replacing them
with components rated for high er voltage, wattage, etc. Parts that
have special safety characteristics are identified by a on
schematic and parts list. Use of a substitute replacement that does not
have the same safety characteristics as the recommended
replacement part might create shock, fire, and/or other hazards.
Product safety is under review continuously and new instructions are
issued whenever appropriate.
SERVICING PRECAUTIONS
3.
CAUTION”Before servicing the unit covered by this service manual
and its supplements read and follow the SAFETY PRECAUTIONS on
this page. NOTE”If unforeseen circumstances create a conflit
between the following servicing precautions and any of the safety
precautions, always follow the safety precautions. Remembe r: Safety
First.
General Servicing Precautions.
a. Always unplug the unit’s AC power cord from the AC power
source before:
(1) removing or reinstalling any component, circuit board, module, or
any other unit assembly.
(2) disconnecting or reconnecting any unit electrical plug or other
electrical connection.
(3) connecting a test substitute in parallel with an electrolytic
capacitor in the unit.
Caution: A wrong part substitution or incorrect polarity installation
of electrolytic capacitors may result in an explosion
hazard.
b. Do not defeat any plug/socket B+ voltage interlocks with which
the unit covered by this service manual might be equipped.
c. Do not apply AC power to this unit and/or any of its electrical
assemblies unless all solid-state device heat sinks are correctly
installed.
d. always connect a test unit instrument’s ground lead to the unit’s
chassis ground before connecting the test instrument’s positive
lead. Always remove the test instrument’s ground lead last.
LASER PRECAUTIONS
4.
WARNING!!
When servicing, (in case it is necessary to confirm Laser Beam
1.
Emission) be sure not to place your eyes any closer than 1 ft or
30cm from the surface of the Objective Lens on the Opticval
Pickup Block.
HANDLING THE LASER PICKUP
2.
Laser diodes are extremely susceptible to damage from static
electricity. Even if a static discharge does not ruin the diode, it can
shorten its life or cause it to work improperly. When replacing the
pickup, use a conductive mat on the floor and desk and wear a
wrist band connected to ground through a 1M ohm resistor to
protect the laser diode from static damage. If the lens should get
dusty, blow off the dust carefully from the object.
3.
There are no adjustable parts in the pickup assembly. If it is
defective, replace the whole pickup assembly.
CAUTION:
USE OF CONTROLS, ADJUSTMENTS OR PERFORMANCE OF
PROCEDURES HEREIN MAY RESULT IN HAZARDOUS
RADIATION EXPOSURE.
DANGER:
IF INTERLOCK FAILS OR IS DEFEATED, THE LASER LIGHT IS
ABLE TO FUNCTION. THE LASER IS INVISIBLE, AVOID DIRECT
EXPOSURE TO BEAM.
2
DISASSEMBLY INSTRUCTIONS
1) ROTATE THE UNIT TO EXPOSE THE BACK SIDE AND BOTTOM SIDE.
2) REMOVE THE 8 SCREWS AS SHOWN IN FIG.1.
FIG.1
3
BLOCK DIAGRAM
4
BLOCK DIAGRAM
PH1
CN102
MAIN BOARD
CN84
CN91
CN6
DISPLAY BOARD
CN5
CN87
CN4
JACK BOARD
CN3
5
LAYOUT DIAGRAM-MAIN BOARD
TOP SIDE
6
LAYOUT DIAGRAM-MAIN BOARD
BOTTOM SIDE
7
LAYOUT DIAGRAM-DISPLAY BOARD
8
SCHEMATIC DIAGRAM-CD/MP3/WMA/SD CARD PART
9
SCHEMATIC DIAGRAM-TUNER/POWER PART
10
SCHEMATIC DIAGRAM- USB SOCKET PART
11
EXPLODED VIEW
12
EXPLODED VIEW PART LIST
13
SUPPLY VOLTAGE : AC230V 50HZSPEAKER:
REF. OUTPUT:
BAND SECTION: CD
AUDIO FREQ:KHz
ITEMSpec. Limit123UNIT
REMARKS : TEST BY: APPROVED:
SPECIFICATION
8OHM
50 MW
)
16. AUX Frequency Response:
15. AUX POWER OUTPUT(1KHZ 1000Mv
)
S
01. Channel Balance 1KHZ/0dB (TCD-782)12dB
02. THD (1KHz/-10dB)(TCD-782)0.51%
(1KHz/0dB)(TCD-782
04. Channel Separation (1khz/0dB) (TCD-782)
1KHz00dB
05. Frequency Response:
06 THD At Max Vol Control (1Khz/0dB)
07 POWER Output 1khz/0dB 10%
08 Accese Time (Short) (TCD-782)
(Long) (TCD-782)
CBS( noitpurretnI .90
AUX 500Mv
14. Channel Balance
CD/USB/CARD -6dB
AM 60% 100dB
FM 45KHZ 60dB
10 KHz+/-2+/-4dB
100HZBd3-/+0
1KHZ00 dB
16KHZBd3-/+0
%0351
W2.15.1
W2.15.1
Bd0555FPB O/W N/S .30
Bd5304
Bd 4-/+2-/+zH 721
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Bd3-/+0
Bd3-/+0
BdFERFER
14
SUPPLY VOLTAGE : AC230V 50HZSPEAKER:
BAND SECTION: AMAntenna :LOOP :
AUDIO FREQ: 1KHz MOD./DEV
.
ITEMSpec. Limit123UNIT
REMARKS : TEST BY: APPROVED:
SPECIFICATION
REF. OUTPUT:
8OHM
50 MW
50 OHM
S
01. Tuning Range Low End515+15/-10KHz
High End1635+20/-28 KHz
02. I. F.
03. MAX.Sens. 999KHz5662dBuv/m
04. Sen. for -20dB S/N 999KHz6266dBuv/m
06. Image Rejection at 1404KHz3025db
07. Tweet at 5mV/m 2 x 1.F.515%
08. A.C.A. +/-10KHz at 999KHz2015db
09 Band Width -6db at 999khz MAX SENS
10. A.G.C.(-10db) at 999KHz 100dB/m
3 m/bd47 .D.H.T .11
12 POWER OUTPUT at 10% THD 80% 74db/m
15. HUM Modulation100db/m4035db
455+/-5KHz
612KHz5662dBuv/m
1404KHz5662dBuv/m
3 x 1.F.//%
54-9KHz
1.51.2W
30%
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15
SUPPLY VOLTAGE :SPEAKER: 8OHM
50 MW
BAND SECTION: FM
AUDIO FREQ:1KHzMOD./DEV.
Z
ITEMSpec. Limit123UNIT
REMARKS : TEST BY: APPROVED:
75 OHM
AC230V 50HZ
Antenna :
REF. OUT:
SPECIFICATION
S
02. Intermediate Frequency
.neS .40
06. Image Rejection 2 I.Fat 106MHz2018db
07. - 3dB Limiting Sens.at 98 MHz 1mV1015dB
08. A.M. Suppression at 98 MHz 1mV3025db
09. A.F.C Holding at 98 MHz 1mV200+/-100KHz
10. S/N Ratio at 98Mhz 1MV4540 db
12 Power output at 10% THD 75khz dev 1mv 1.51.2W
Multiplex
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25-015270944221CHIP CAP 0.0027UF 50V +-10%(1608C81
25-015330944221CHIP CAP 0.0033UF 50V +-10%(1608C146
25-015330944221CHIP CAP 0.0033UF 50V +-10%(1608C147
25-015470944221CHIP CAP 0.0047UF 50V +-10%(1608C117
25-015470944221CHIP CAP 0.0047UF 50V +-10%(1608C2
25-015680944221CHIP CAP 0.0068UF 50V +-10%(1608C78
25-015680944221CHIP CAP 0.0068UF 50V +-10%(1608C79
25-016100944221CHIP CAP 0.01UF 50V +-10%(1608)C25
25-016100944221CHIP CAP 0.01UF 50V +-10%(1608)C31
25-016100944221CHIP CAP 0.01UF 50V +-10%(1608)C115
25-016100944221CHIP CAP 0.01UF 50V +-10%(1608)C116
25-016150944221CHIP CAP 0.015UF 50V +-10%(1608)C105
25-016150944221CHIP CAP 0.015UF 50V +-10%(1608)C106
25-016150944221CHIP CAP 0.015UF 50V +-10%(1608)C114
25-016220944321CHIP CAP 0.022UF 50V +-10%(2012)C4
25-016220944321CHIP CAP 0.022UF 50V +-10%(2012)C5
25-016220944321CHIP CAP 0.022UF 50V +-10%(2012)C6
25-016220944321CHIP CAP 0.022UF 50V +-10%(2012)C7
25-016330944221CHIP CAP 0.033UF 50V +-10%(1608)C124
25-016330944221CHIP CAP 0.033UF 50V +-10%(1608)C125
25-016470944221CHIP CAP 0.047UF 50V +-10%(1608)C128
25-016470944221CHIP CAP 0.047UF 50V +-10%(1608)C129
25-016820644221CHIP CAP 0.082UF 16V +-10%(1608)C102
25-016820644221CHIP CAP 0.082UF 16V +-10%(1608)C143
25-016820644221CHIP CAP 0.082UF 16V +-10%(1608)C141
25-016820644221CHIP CAP 0.082UF 16V +-10%(1608)C50
25-016820644221CHIP CAP 0.082UF 16V +-10%(1608)C121
25-016820644221CHIP CAP 0.082UF 16V +-10%(1608)C21
25-016820644221CHIP CAP 0.082UF 16V +-10%(1608)C52
25-016820644221CHIP CAP 0.082UF 16V +-10%(1608)C111
25-016820644221CHIP CAP 0.082UF 16V +-10%(1608)C112
25-016820644221CHIP CAP 0.082UF 16V +-10%(1608)C53
25-016820644221CHIP CAP 0.082UF 16V +-10%(1608)C138
25-016820644221CHIP CAP 0.082UF 16V +-10%(1608)C135
25-016820644221CHIP CAP 0.082UF 16V +-10%(1608)C134
25-016820644221CHIP CAP 0.082UF 16V +-10%(1608)C122
25-016820644221CHIP CAP 0.082UF 16V +-10%(1608)C47
25-016820644221CHIP CAP 0.082UF 16V +-10%(1608)C107
25-017100944221CHIP CAP 0.1UF 50V +-10%(1608)C82
25-017100944221CHIP CAP 0.1UF 50V +-10%(1608)C84
25-017100944221CHIP CAP 0.1UF 50V +-10%(1608)C133
25-017100944221CHIP CAP 0.1UF 50V +-10%(1608)C118
25-017100944221CHIP CAP 0.1UF 50V +-10%(1608)C119
25-017100944221CHIP CAP 0.1UF 50V +-10%(1608)C137
25-017100944221CHIP CAP 0.1UF 50V +-10%(1608)C43
25-017100944221CHIP CAP 0.1UF 50V +-10%(1608)C38
25-017100944221CHIP CAP 0.1UF 50V +-10%(1608)C32
25-017100944221CHIP CAP 0.1UF 50V +-10%(1608)C33
25-017100944221CHIP CAP 0.1UF 50V +-10%(1608)C37
25-017100944221CHIP CAP 0.1UF 50V +-10%(1608)C35
25-017100944221CHIP CAP 0.1UF 50V +-10%(1608)C36
25-017100944221CHIP CAP 0.1UF 50V +-10%(1608)C41
25-017100944221CHIP CAP 0.1UF 50V +-10%(1608)C42
25-017100944221CHIP CAP 0.1UF 50V +-10%(1608)C49
25-017100944321CHIP CAP 0.1UF 50V +-10%(2012)C29
25-017100944321CHIP CAP 0.1UF 50V +-10%(2012)C45
25-017100944321CHIP CAP 0.1UF 50V +-10%(2012)C46