Page 1
CAR CD/MP3/WMA Receiver
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS”
IN THIS MANUAL.
P/N : AFN30086098 APRIL, 2006
MODELS:LAC-M7600R/LAC-M7600
SERVICE MANUAL MODELS: LAC-M7600R/LAC-M7600R
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- 1-1 -
[CONTENTS]
❍ SECTION 1.GENERAL
• SERVICING PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
• ESD PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
• SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4
❍ SECTION 2. ELECTRICAL
• ELECTRICAL TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
• WAVEFORMS OF MAJOR CHECK POINT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
• INTERNAL BLOCK DIAGRAM of ICs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
• BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21
• SCHEMATIC DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23
• PRINTED CIRCUIT DIARGAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-31
❍ SECTION 3. EXPLODED VIEWS
• CABINET AND MAIN FRAME SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
• MECHANISM (PICK-UP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
❍ SECTION 4. REPLACEMENT PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
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SECTION 1. SUMMARY
❏ SERVICING PRECAUTIONS
❶ Always disconnect the power source before:
1) Removing or reinstalling any component, circuit board, module or any other instrument assembly.
2) Disconnecting or reconnecting any instrument electrical plug or other electrical connection.
3) Connecting a test substitute in parallel with an electrolytic capacitor in the instrument.
CAUTION: A wrong part substitution or incorrect polarity installation of electrolytic capacitors may result in
an explosion hazard.
❷ Do not defeat any plug/socket B+ voltage interlocks with which instruments covered by
this service manual might be equipped.
❹ Do not apply power to this instrument and or any of its electrical assemblies unless all
solid-state device heat sinks are correctly installed.
❸ Always connect a test instrument’s ground lead to the instrument chassis ground before
connecting the test instrument positive lead. Always remove the test instrument ground
lead last.
1) The service precautions are indicated or printed on the cabinet, chassis or components. When servicing,
follow the printed or indicated service precautions and service materials.
2) The Components used in the unit have a specified conflammability and dielectric strength. When replacing any components, use components which have the same ratings. Components marked in the circuit diagram are important for safety or for the characteristics of the unit. Always replace with the exact
components.
3) An insulation tube or tape is sometimes used and some components are raised above the printed writing
board for safety. The internal wiring is sometimes clamped to prevent contact with heating components.
Install them as they were.
4) After servicing always check that the removed screws, components and wiring have been installed correctly and that the portion around the service part has not been damaged. Further check the insulation
between the blades of attachment plug and accessible conductive parts.
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❏ ESD PRECAUTIONS
Electrostatically Sensitive Devices (ESD)
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components
commonly are called Electrostatically Sensitive Devices (ESD). Examples of typical ESD devices are integrated
circuits and some field-effect transistors and semiconductor chip components. The following techniques should
be used to help reduce the incidence of component damage caused by static electricity.
1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off
any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a
commercially available discharging wrist strap device, which should be removed for potential shock reasons
prior to applying power to the unit under test.
2. After removing an electrical assembly equipped with ESD devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder ESD devices.
4. Use only an anti-static solder removal device. Some solder removal devices not classified as "anti-static" can
generate electrical charges sufficient to damage ESD devices.
5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ESD
devices.
6. Do not remove a replacement ESD device from its protective package until immediately before you are
ready to install it. (Most replacement ESD devices are packaged with leads electrically shorted together by
conductive foam, aluminum foil or comparable conductive materials).
7. Immediately before removing the protective material from the leads of a replacement ESD device, touch the
protective material to the chassis or circuit assembly into which the device will by installed.
CAUTION : BE SURE NO POWER IS APPLIED TO THE CHASSIS OR CIRCUIT, AND OBSERVE ALL
OTHER SAFETY PRECAUTIONS.
8. Minimize bodily motions when handing unpackaged replacement ESD devices. (Otherwise harmless motion
such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity sufficient to damage an ESD device).
CAUTION. GRAPHIC SYMBOLS
THE LIGHTNING FLASH WITH APROWHEAD SYMBOL. WITHIN AN EQUILATERAL TRIANGLE,
IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF UNINSULATED
“DANGEROUS VOLTAGE” THAT MAY BE OF SUFFICIENT MAGNITUDE TO CONSTITUTE A
RISK OF ELECTRIC SHOCK.
THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT
THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN
SERVICE LITERATURE.
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❏ SPECIFICATIONS
MP3/WMA Disc compatibility with this unit is limited as follows:
1. Sampling Frequency/8 - 48kHz (MP3) 22.05 - 48kHz (WMA)
2. Bit rate/within 8 - 320kbps (include VBR) (MP3) 32 - 320kbps (WMA)
3. CD-R/CD-RW file system should be “ISO 9660”
4. If you record MP3/WMA files using software which cannot create a FILE SYSTEM, for example
“Direct-CD” etc., it will not be possible to playback MP3/WMA files. We recommend that you use
“Easy-CD Creator” which creates an ISO9660 file system.
Customers should also note that permission is required in order to download MP3/WMA files and
music from the Internet.
Our company has no right to grant such permission.
Permission should always be sought from the copyright owner.
1. GENERAL
Output Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50W x 4CH (Max.)
Power Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DC 12V
Speaker impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8 Ω
Ground System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Negative
Dimensions (W x H x D) . . . . . . . . . . . . . . . . . . . . . . . . . . 182 x 51 x 173 mm (Without Front Panel)
Net Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.3 kg
2. CD
Frequency Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Hz-20 kHz
S/N Ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95 dB
Distortion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.1%
Channel Separation (1kHz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 dB
3. RADIO
FM
Frequency Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87.5-107.9 or 87.5-108 MHz
S/N Ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 dB
Distortion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.7%
Usable Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 dBµV
AM (MW)
Frequency Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 520-1720 or 522-1620 kHz
S/N Ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 dB
Distortion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.0%
Usable Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 dBµV
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SECTION 2. ELECTRICAL
❏ ELECTRICAL TROUBLESHOOTING GUIDE
1. No Power.
Any Key power on.
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
Is power turnd on?
DISC loading?
Does initial reading occur?
Can disc be played?
Is audio output supplied?
OK
Check audio circuitry.
IC506, IC508, PN502
Check tracking servo circuitry.
Q501, IC506, IC504
Check DISC.
Check focusing circuitry.
Q501, IC506
Check laser circuitry.
Q501, IC506
Check loading supply circuitry.
Q701, Q702, Q703, Q704,
PN503, Q503, IC508
Check power supply circuitry.
Q722, Q727, IC702, Q723, Q805,
Q806, Q720, Q719, IC701
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2. VFD light abnornal.
YES
YES
YES
YES
YES
YES
NO NO
NO
NO
NO
NO
NO
Any Key power on.
(without DISC)
Do display VFD then light?
Check voltage in the power
supply circuitry.
Power supply circuitry defective.
Q601, Q602, IC602, T901
• Reset circuit defective.
IC903 Surrounding circuit
defective.
• IC903 Pin14 defective.
X101, X102, C101,
C102, C103, C104
PN103, PN802, PN901,
CN903 front
PCB pattern defective.
IC102, Pin75, 76, 78
front PCB pattern defective.
VFD901, D908, Surrounding
circuit defective.
Display LCD connector
defective.
Is VFD901 F+ (Pin1, 2)
F- (Pin40, 41) Differential
Voltage 2.1~3.15V Input?
Is u-com IC102 Pin75, 76, 78
output waveform normal?
Is u-com IC102 reset circuit
normal? IC102-74Pin
Is u-com IC102 keyin Pin63, 64
5volt input?
Is u-com IC102 X1, X2 terminal
Pin11, 12, 14, 15 input?
OSC : 19.2MHz
OSC : 32.768kHz
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3. Initial reading is not carried out.
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES (with disc)
NO NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
Slide motor moves
(With disc)
Spindle motor turns
WAVEFORM #1
Does RF waveform
appear? IC501 Pin49
WAVEFORM #2
Check the Voltage change of
PN502 Pin1 (6.4~6.8V)
Check the Voltage IC506
Pin23 (1.4V~1.8V)
Check the Data transmission
from IC510 (58, 72, 70)
DSP WAVEFORM #5
Check the Data transmission
from Pin21 to MICOM
WAVEFORM #5 (IC510)
Check the TRVP
Voltage
IC506 Pin23
Check the change of
SL +, SL – Voltage
IC504 Pin13,14
Does FA+ waveform appear at
IC506 Pin23?
WAVEFORM #3
Laser light check A ?
focus coil drive wareform.
TRACKING ERROR wareform
Defective contact PN501
Defective PICK-UP
Defective IC504
Defective IC506
Defective IC504
Defective MICOM
Defective IC506
Defective
connector CN503
Does TE waveform appear at
IC506 Pin24?
WAVEFORM #4
Is rotation normal?
Is there no dropout of RF signal?
Defective IC506
Defective PICK-UP
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When laser does not light.
A
Is “2.4V~3.4V” applied to
pin42 of IC506?
( ➀ 3.4V ➁ 2.4V)
Did pickup return to
innermost circular?
Does it stop at inner pick
circular after shift?
Is defect output from LMT
SW applied to 68 of IC510?
Is data transferred
from IC510
Does voltage appear at
IC504 Pin 13, 14?
Defective MICOM (IC510)
Defective IC506.
Defective slide motor and/or
connector. (PN504)
Defective LMT SW and/or
connector. (PN504)
Defective MICOM. (IC510)
Defective IC506
Is power supplied to laser Q501?
(Q501 collector: about 1.8V)
OV
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
OPEN CLOSE
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When laser light.
B
When SPINDLE motor dose not turn
C
NO
NO
NO
NO
YES
YES
YES
YES
Laser lights
Check the signal FOCUS
SEARCH of IC506 Pin25
WAVEFORM #3
Check the signal of IC504
Pin 15, 16
WAVEFORM #3
Defective IC506
Defective IC506
Degraded laser diode
Defective PICK-UP
Defective IC506
Defective IC504
Defective contact PN501
or Defective PICK-UP
Check the change for
SP +, SP –, Voltage
of IC504 Pin11, 12
WAVEFORM #1
Check the change for
SPDO Voltage
of IC506 Pin21
WAVEFORM #1
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❏ WAVEFORMS OF MAJOR CHECK POINT
#1. SPINDLE DRIVE AND MOTOR WAVEFORM
IC501(21), IC502(12) during TOC reading
#2. RF WAVEFORM
IC506(45), IC506(49) during TOC reading
#4. TRACK DRIVE AND MOTOR WAVEFORM
IC502(24), IC504(17) during TOC reading
#3. FOCUS DRIVE AND MOTOR WAVEFORM
IC506(25), IC504(15)
• When focus search failed or there is no disc on tray
• There is disc on tray and focus search success
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❏ INTERNAL BLOCK DIAGRAM of ICs
■ FRONT
1) MICOM PIN Assignment
Page 13
- 2-8 -
2) Pin Descriptions
Page 14
- 2-9 -
Page 15
- 2-10 -
3) Pin Descriptions
Page 16
- 2-11 -
■ TB2903HQ
1) Block Diagram
R
L
R
L
R
L
11
9
8
7
5
2
3
17
18
19
21
24
23
12
15
14
1 20 6
R
L
IN1
IN2
IN3
IN4
13
C
1
C
1
C
1
C
1
PRE-GND
10 25 22
OUT1 (+)
PW-GND1
OUT1 (
)
OUT2 (+)
PW-GND2
OUT2 (
)
OUT3 (+)
PW-GND3
OUT3 (
)
OUT4 (+)
PW-GND4
OUT4 (
)
TAB V
CC1VCC2
C
3
C
4
C
2
: PRE-GND
: PW-GND
STBYRIP MUTE
C
5
16
C
6
4
Off-set
DET
MUTE
PLAY
5 V
R
1
A
C-GND
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■ 78K0/KF2
1) Block Diagram
Page 18
- 2-13 -
2) Pin Lay Out
AVSS
AVREF
P57
P56
P55
P54
P10/SCK10/TXD0
P11/SI10/RXD0
P12/SO10
P13/TXD6
P14/RXD6
P15/TOH0
P16/TOH1/INTP5
P17/TI50/TO50
P30/INTP1
P53
P52
P51
P50
P31/INTP2
P140/PCL/INTP6
P141/BUZ/BUSYO/INTP7
P142/SCKAO
P143/SIA0
P144/SOAO
P145/STBO
P00/TI000
P01/TI010/T000
P02/SO11
P03/SI11
P04/SCK11
P130
P20/ANI0
P21/ANI1
P22/ANI2
P23/ANI3
P24/ANI4
P25/ANI5
P26/ANI6
P27/ANI7
P60/CSL0
P61/SDA0
P62/EXSCL0
P63
P33/TI51/TO51/INTP4
P64
P65
P66
P67
P77/KR7
P76/KR6
P75/KR5
P74/KR4
P73/KR3
P72/KR2
P71/KR1
P70/KR0
P06/TI011/T001
P05/TI001/SSI11
P32/INTP3
P120/INTPO/EXLVI
P47
P46
P45
P44
P43
P42
P41
P40
RESET
P124/XT2/EXCLKS
P123/XT1
IC/FLMD0
P122/X2/EXCLK
P121/X1
REGC
VSS
EVSS
VDD
EVDD
80pin QFP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
21 22 23 24 25 26 2728 29 30 31 32 33 34 35 36 37 38 39 40
80
79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 6463 62 61
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- 2-14 -
3) Pin Function
Page 20
- 2-15 -
■ AM5810
1) Block Diagram
Page 21
- 2-16 -
3) Pin Function
Page 22
- 2-17 -
ARFFB
ARFOUT
ARFDC
AVDO2
RF IN
RFOUT
RFENV
CENV
LD
PD
A
C
B
D
F
E
VREF
CTRCRS
OSCIN
AVSS2
SRVMON1
SRVMONO
DVDO1
IOVDO2
DVSS1
DVDD2
IOVDD1
DVSS2
NTEST2
X2
X1
MTEST
D2
D1
D0
D3
D4
D5
D6
D7
D15
D14
DRVDD
D13
D12
D11
D10
D9
D8
SDRCK
A11
A9A8A7A6A5
A4
MTE
MCAS
MRAS
A3A2A1
A0
A10
BA0
BA1
PRAMVSS33
PRAMVDD15
PRAMVDD33
SPOUT
PC
TRWP
TRP
FOP
PMCK
SMCK
DOSYTXT
MRST
BLKCK
S TAT
MLD
M DATA
MCLKTXFLAG
EXT2
EXT1
EXT0
MSRVWOMON
DVSS3
OUTR
AWDD1
AWSS1
OUOTL
PLLFO
PLLF
IREF
DSLF
ARFIN
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
MN6627954
75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51
12345678910111213141516171819202122232425
■ MN6627954
1) Pin Lay Out
Page 23
- 2-18 -
2) Block Diagram
NTEST2
NTEST
NSRVMONON
NRST
AVDD2
LD
PD
ARFFB
ARFOUT
ARFDC
RFOUT
RFIN
CENV
CTRCRS
OSCIN
VREF
RFENV
* SPPOL
SPOUT
TRVP
TRP
FOP
SRVMON0
SRVMON1
Nanes in [ ] are Block abbreviartion.
Signals in ( ) are input signal or output signal by IO changing.
Pins marked * is the pins enable to change another signals.
OUTPUT
PORT
DIGITAL
OUT
REGULATOR
A/D
CONVERTER
CMOS
RF
AMPLIFIER
TIMING
GENERATOR
[GEN]
MICRO COMPUTER
INTERFACE
[MCIF]
DSL / PLL / VCO
[DSLPLL]
SPINDLE
SERVO
[SPD]
SERVO
CPU
[DSV]
MP3/WMA
DECORDER
ANALOG
LOWPASS
FILTER
DIGITAL FILTER
1bit DAC
PWM LOGIC
[DF.MASH]
SERIAL OUTPUT
INTERFACE
[DAO]
BUS CONTROL UNIT
[BCU]
CIRC RAM
1Mbit
DRAM
SUBCODE
INTERFACE
[DEMECC]
* TXTCK
PLLFO
IOVDD1
IOVDD2
DRVDD
DVDD1
DVDD2
DVSS1
DVSS2
DVSS3
OUTL
OUTR
AVDD1
AVSS1
* TX
(LRCKIN)
(BCLKIN)
(SRDATIN)
PLLF
DSLF
IREF
ARFIN
M DATA
MCLK
MLD
* STAT
(PMCK)
(SMCK)
X2
X1
* TXTD
* DQSY
(SBCK)
(SUBC)
(TXNCLDCK)
PRAMVDD33
PRAMVSS33
* EXT0
* EXT1
* EXT2
(LRCK)
(BCLK)
(SRDATA)
(DVDD2)
D0 ~ D15
A0 ~ A11
BA0,BA1
NWE,NCAS,
NRAS,SDRCK
* FLAG
* BLKCK
EFM DEMODULATION
SYNC INTERPOLATION
CIRC ECC
CDROM ECC
[DEMECC]
FS
CONVERTER
[FSC]
AVSS2
A,B,C,D,E,F
Page 24
- 2-19 -
3) Pin Function
Pin no. Symbol I/O Function
1 A11 O Adress signal output for DRAM11
2 A9 O Adress signal output for DRAM9
3 A8 O Adress signal output for DRAM8
4 A7 O Adress signal output for DRAM7
5 A6 O Adress signal output for DRAM6
6 A5 O Adress signal output for DRAM5
7 A4 O Adress signal output for DRAM4
8 NWE O Writing enable signal output for DRAM
9 NCAS O CAS control signal output for DRAM
10 NRAS O RAS control signal output for DRAM
11 A3 O Adress signal output for DRAM3
12 A2 O Adeess signal output for DRAM2
13 A1 O Adress signal output for DRAM11
14 A0 O Adress signal output for DRAM0
15 A10 O Adress signal output for DRAM10
16 *BA0 I/O Bank Selection signal output for SDRAM 0/Monitor serial input
17 *BA1 I/O Bank Selection signal output for SDRAM 1/Monitor serial input
18 PRAMVSS33 I GND for built-in DRAM
19 PRAMVDD33 I Power supply input for built-in DRAM
20 PRAMVDD15 – Power supply output for built-in DRAM 1.6V
21 SPOUT O Power supply for digital circuits
22 *PC I/O Spindle motor drive signal output (Absolute value output)/Monitor serial input
23 TRVP O Traverse drive signal output (positive polarity)
24 TRP O Tracking drive signal output (positive polarity)
25 FOP O Focus drive signal output (positive polarity)
26 DVSS1 I Ground 1 for digital circuits
27 IOVDD2 I Power supply 2 for digital I/O
28 DVDD1 – Power supply 1 for internal digital circuits
29 SRVMON0 O Servo Monitor Output
30 SRVMON1 O Servo Monitor Output
31 AVSS2 I Analog circuit VSS (For DSL, PLL, AD, RF)
32 OSCIN I Servo Disturbance Input
33 CTRCRS O Tracking coss comparator output
34 VREF O VREF output
35 E I Tracking signal input 1
36 F I Tracking signal input 2
37 D I Focus signal input4
38 B I Focus signal input2
39 C I Focus signal input3
40 A I Focus signal input1
Note) pins marked with an asterisk can be switched to different signals by using microcontroller commands.
Page 25
- 2-20 -
■ TDA7416
1) pin description
1
2
3
5
6
4
7
8
9
10
171118 19 20 21 22
44 43 42 41 3940 38 37 36 35 34
28
27
26
24
23
25
33
32
31
29
30
N.C.
N.C.
AUXR
PDL+
PD-
N.C.
PDR+
MIX
N.C.
GND
N.C.
ADS
L
CS
NIAS
E
TU
M
TUO
A
S
W
S
TUO
ROLIF
3TUO2CA
RNI2C
A
R
R
TUO
FRUO
.C.N
RTUOCA
W
SNIC
A
W
S
TUO
C
A
fe
rC
.C.N
LMA
RMA
LDM
RDM
LXUA
N.C.
OUTLR
OUTLF
FILOL
AC2OUTL
AC2INL
VDD
VREFOUT
ACINL
ACOUTL
ACINR
TQFP44
12 13 14 15 16
Page 26
❏ BLOCK DIAGRAM
2-21 2-22
Page 27
2-23 2-24
❏ SCHEMATIC DIAGRAMS
• MAIN SCHEMATIC DIAGRAM
Page 28
2-25 2-26
• MAIN-2 SCHEMATIC DIAGRAM
Page 29
2-27 2-28
• MAIN-3 SCHEMATIC DIAGRAM
Page 30
2-29 2-30
• MAIN-4 SCHEMATIC DIAGRAM
Page 31
2-31 2-32
• FRONT SCHEMATIC DIAGRAM
Page 32
2-33 2-34
• CD SCHEMATIC DIAGRAM
Page 33
2-35 2-36
• TRIM SCHEMATIC DIAGRAM
Page 34
2-37 2-38
❏ PRINTED CIRCUIT BOARD DIAGRAMS
• MAIN P.C. BOARD DIAGRAM
Page 35
2-39 2-40
• MAIN P.C. BOARD DIAGRAM
Page 36
2-41 2-42
• FRONT/TRIM P.C. BOARD DIAGRAM • TRIM P.C. BOARD
Page 37
2-43 2-44
• CD P.C. BOARD
Page 38
3-1 3-2
*Accessory
254
835
818
A26
A46
A41
454
451
281
276
451
275
451
450
451
451
452
456
279
451
274
273
269
266
268
264
A45
262
261
262
A50
457
263
453
260
265
272
270
271
280
278
259
252
A40
450
255
256
257
258
253
450
251
A42
250
SECTION 3. EXPLODED VIEWS
❏ CABINET AND MAIN FRAME SECTION
Page 39
3-3 3-4
2
3
4
5
1
1
2
A03
❏ MECHANISM (PICK-UP)
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