LG DA-W6100A User manual

DVD RECEIVER
SERVICE MANUAL
MODEL: DA-W6100A/D,
FE-6100CVE, FE-6100TE, FE-6100WE
FA-W6100SL, FA-W6100SR, ACC-W6100
SERVICEMANUALMODEL:
DA-W6100A/D,FE-6100CVE,FE-6100TE,FE-6100WEFA-W6100SL,FA-W6100SR,ACC-W6100
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- 1-1 -
CONTENTS
SECTION 1. GENERAL
• SERVICING PRECAUTIONS ..................................................................................................................... 1-2
• ESD PRECAUTIONS.................................................................................................................................. 1-4
• SPECIFICATIONS ...................................................................................................................................... 1-5
• LOCATION OF CUSTOMER CONTROLS ................................................................................................. 1-6
SECTION 2. AUDIO PART
• ELECTRICAL TROUBLESHOOTING GUDIE ............................................................................................ 2-1
• DVD PLAYER PROGRAM DOWNLOAD METHOD ................................................................................... 2-5
• WAVEFORMS OF MAJOR CHECK POINT ............................................................................................... 2-7
• INTERNAL BLOCK DIAGRAM OF ICs ....................................................................................................... 2-8
• IC VOLTAGE SHEET ............................................................................................................................... 2-10
• BLOCK DIAGRAM .................................................................................................................................... 2-13
• SCHEMATIC DIAGRAMS......................................................................................................................... 2-15
• PRINTED CIRCUIT DIARGAMS............................................................................................................... 2-27
SECTION 3. DVD PART
• ELECTRICAL TROUBLESHOOTING GUIDE ........................................................................................... 3-1
• BLOCK DIAGRAMS..................................................................................................................................... 3-9
• SCHEMATIC DIAGRAMS.......................................................................................................................... 3-13
• WAVEFORMS............................................................................................................................................ 3-21
• PRINTED CIRCUIT DIAGRAM .................................................................................................................. 3-27
SECTION 4. MECHANSIM ............................................................................................................. 4-1
SECTION 5. EXPLODED VIEWS ................................................................................................... 5-1
SECTION 6. REPLACEMENT PARTS LIST .................................................................................. 6-1
SECTION 7. SPEAKER PART
• ELECTRICAL TROUBLESHOOTING GUIDE ............................................................................................. 7-1
• BLOCK DIAGRAMS..................................................................................................................................... 7-6
• SCHEMATIC DIAGRAMS............................................................................................................................ 7-8
• WARING DIAGRAM................................................................................................................................... 7-14
• PRINTED CIRCUIT DIAGRAM .................................................................................................................. 7-16
• SPEAKER EXPLODED VIEWS.................................................................................................................. 7-20
• REPLACEMENT PARTS LIST................................................................................................................... 7-28
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SECTION 1. GENERAL PART
SERVICING PRECAUTIONS
NOTES REGARDING HANDLING OF THE PICK-UP
1. Notes for transport and storage
1) The pick-up should always be left in its conductive bag until immediately prior to use.
2) The pick-up should never be subjected to external pressure or impact.
2. Repair notes
1) The pick-up incorporates a strong magnet, and so should never be brought close to magnetic materials.
2) The pick-up should always be handled correctly and carefully, taking care to avoid external pressure and
impact. If it is subjected to strong pressure or impact, the result may be an operational malfunction and/or
damage to the printed-circuit board.
3) Each and every pick-up is already individually adjusted to a high degree of precision, and for that reason
the adjustment point and installation screws should absolutely never be touched.
4) Laser beams may damage the eyes!
Absolutely never permit laser beams to enter the eyes!
Also NEVER switch ON the power to the laser output part (lens, etc.) of the pick-up if it is damaged.
5) Cleaning the lens surface
If there is dust on the lens surface, the dust should be cleaned away by using an air bush (such as used
for camera lens). The lens is held by a delicate spring. When cleaning the lens surface, therefore, a
cotton swab should be used, taking care not to distort this.
6) Never attempt to disassemble the pick-up.
Spring by excess pressure. If the lens is extremely dirty, apply isopropyl alcohol to the cotton swab. (Do
not use any other liquid cleaners, because they will damage the lens.) Take care not to use too much of
this alcohol on the swab, and do not allow the alcohol to get inside the pick-up.
- 1-2 -
Storage in conductive bag Drop impact
NEVER look directly at the laser beam, and don’t let
contact fingers or other exposed skin.
Magnet
How to hold the pick-up
Pressure
Pressure
Cotton swab
Conductive Sheet
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NOTES REGARDING COMPACT DISC PLAYER REPAIRS
1. Preparations
1) Compact disc players incorporate a great many ICs as well as the pick-up (laser diode). These
components are sensitive to, and easily affected by, static electricity. If such static electricity is high
voltage, components can be damaged, and for that reason components should be handled with care.
2) The pick-up is composed of many optical components and other high-precision components. Care must
be taken, therefore, to avoid repair or storage where the temperature of humidity is high, where strong
magnetism is present, or where there is excessive dust.
2. Notes for repair
1) Before replacing a component part, first disconnect the power supply lead wire from the unit
2) All equipment, measuring instruments and tools must be grounded.
3) The workbench should be covered with a conductive sheet and grounded.
When removing the laser pick-up from its conductive bag, do not place the pick-up on the bag.
(This is because there is the possibility of damage by static electricity.)
4) To prevent AC leakage, the metal part of the soldering iron should be grounded.
5) Workers should be grounded by an armband (1MΩ)
6) Care should be taken not to permit the laser pick-up to come in contact with clothing, in order to prevent
static electricity changes in the clothing to escape from the armband.
7) The laser beam from the pick-up should NEVER be directly facing the eyes or bare skin.
- 1-3 -
Armband
Conductive
Sheet
Resistor
(1 Mohm)
Resistor
(1 Mohm)
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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.
- 1-4 -
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- 1-5 -
SPECIFICATIONS
Power supply AC 220V,60Hz
Power consumption 90W
[General] Mass 4.6kg
External dimensions (W x H x D) 360 X 72 X 350mm
Signal system NTSC
Laser Semiconductor laser, wavelength 650nm
Frequency range(audio) 4 Hz ~20 kHz
[CD/DVD] Signal-to-noise ratio(audio) More than 75dB(1kHz,NOP,20kHz LPF/A-Filter)
Dynamic range (audio) More than 75dB
Harmonic distortion(audio) 0.5%(1kHz, at 12Q position)
Video input 1.0V (p-p),75
Ω ,RCA jack
AM(MW) Video output 1.0V (p-p),75
Ω,
RCA jack
S-video output (Y)
1.0V(p-p),75 ΩMini DIN 4-pin X 1
(Y) 0.3V(p-p)
Tuning Range 87.5 -108 MHz
TUNER(FM) Intermediate Frequency 10.7 MHz
Signal-to Noise Ratio 60dB
Frequency Response 150 -10,000 Hz
Outputs Stereo mode 50W +50W(8 Ω ,1kHz,THD 1%)
Surround mode Front:50W +50W(THD 1%)
Center:50W
AMP Surround: 50W +50W(8 Ω 1kHz,THD 1%)
Subwoofer: 80W(4 Ω ,30Hz,THD 1%)
Inputs VIDEO 1,2, OPTICAL AUDIO
Outputs VIDEO 1(AUDIO OUT):2V
WOOFER: 2V
Type FE-6100CVE FE-6100WE FE-6100TE, FA-W6100S
Impedance 8 ohm 4 ohm 8 ohm
SPEAKE SYSTEM 80dB/W/N 80dB/W/N 85dB/W/N
Frequency Response 110~40kHz 40 ~1.5kHz 110~40kHz
Rated Inut Power 50 100 50
Max. Input Power 100 200 100
Net dimensions (W x H x D) 329 x 117 x 90.5 350 x 326 x 350 270.5 x 1150 x 270.5
Net Weight 0.92kg 7.2kg 4.78kg
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- 1-6 -
LOCATION OF CUSTOMER CONTROLS
FRONT PANEL
DISPLAY WINDOW
SKIP/TUNE BUTTON
STOP BUTTON
PAUSE BUTTON
PLAY BUTTON
OPEN/CLOSE
DISC TRAY
FUNCTION
BUTTON
MENU
(MONO/STERO) BUTTON
VOLUME
CONTROLLER PHONE
CONNECTORs
TITLE (FM/AM)
BUTTON
POWER BUTTON
AND INDICATOR
SOUND MODE
INDICATOR
ANGLE ICON
INDICATOR
DISC INDICATOR PLAY/PAUSE INDICATOR
REC/RDS
INDICATOR
REPEAT PLAY BACK
MODE INDICATOR
TOTAL PLAYING TIME/ELAPSED
TIME/FREQUENCY/DELAY
TIME/VOLUME. INDICATORS
SLEEP
INDICATOR
TUNED
INDICATOR
STEREO
INDICATOR
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- 1-7 -
REAR PANEL
Y
SPEAKER
CONNECTORS
VIDEO SELECTOR
SWITCH
VIDEO1 (INPUT/OUT PUT)
CONNECTORS
S-VIDEO OUT
CONNECTOR
AM ANTENNA
CONNECTOR
FM300ΩCOAXAL
ANTENNA CONNECTOR
S-VIDEO
COMPONENT
SWITCH
VIDEO 2(INPUT)
CONNECTOR
WOOFER OUT
CONNECTOR
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- 1-8 -
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SECTION 2. AUDIO PART
ELECTRICAL TROUBLESHOOTING GUDIE
1.
Turn power on.
Is power on?
Does initial read work?
Does it play?
Does it output audio?
Check power supply circuit.
Check laser circuit.
Check focus circuit.
Check disc.
Check tracking servo circuit.
Check audio circuit.
OK
YES
YES
YES
YES
NO
NO
NO
NO
- 2-1 -
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- 2-2 -
2. AUDIO µ. COM Circuit
POWER ON
Does LOADING
appear at FLD?
Does LOADING
appear at FLD?
Does it appear
DVD Error at
FLD?
Does Video1/2
FM 87.5 appear
at FLD?
OK.
Check
Connector(PN103)if
is normally. Reconnet it.
Refer to SMPS
Refer to oscillator
Circuit.
Check DVD Reset Waveform.
Check IC101 Reset Wavefrom.
Check 3.3V line.
Check Power dection Circuit..
Check power part
of Main B/D.
Check oscillator
of x101.
Check if CN103
PIN5 is High.
Check if IC101
PIN 11 is High.
Check if IC101 PIN
17 , 46 , 72 , 90 is high
(5V).
Check if IC101
PIN 26 is High .
Replace IC101.
Does no Dise or
Time appear at FLD?
Check if DVD an Audio
Micom Interface is OK.
Check power.
Check DVD Module.
Check SMPS.
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- 2-3 -
3. Front Circuit (1/2)
N
N
N
N
N
Y
Y
Y
Y
Y
Y
Y
Y
* 1: PN101 Pins
Pin 1: -32V
Pin 8: -28V
Pin 9: -32V
Pin 20: 12V
POWER ON
LED OFF.
Is digitron
on normally?
Check if the
PN101/PN102
is OK.
Check if the
Front power is
OK(*1).
Refer to SMPS Part.
Reconnec it.
Check if the
VFD401 PINs
are OK.
Check Patten
and Resoldering.
Check if all Buttens
are OK.
Check if the
Volume is
OK.
Check if the
Headphone is
OK.
Check if the
Remocon is
OK.
Front B/D OK.
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- 2-4 -
Front Circuit (2/2)
N
N
N
N
N
N
N
N
N
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Check
if the Power part of the
Front is OK.
Check if
R027~R036
OK.
Refer to Micom
Circuit
Refer to
power(SMPS).
Replace R027~R036
Check if the
Power part of the
Front is OK.
Check if
PN101 PIN12, 13
Waverfrom
OK.
Check if
R023, R024
OK.
Refer to Micom
Circuit.
Refer to SMPS.
Replace R023, R024.
Refer to
power(SMPS).
Check
if the Power part of the
Front is OK.
Check if the
PN101 PIN19
is Low.
Check if
headphoneJack
in JK001 is
OK.
Refer to M-COM
Circuit.
Check Main B/D.
Check JK001 Circuit.
Refer to SMPS part.
Check if the
Power Part of the
Front is OK.
Check if the
RMC001Volume
is OK (5V).
Check if the
Remocon waveform of the
PN101 PIN11.
Replace RMC 001.
Check RMC Circuit.
Refer to Micom
Circuit.
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DVD PLAYER PROGRAM DOWNLOAD METHOD
1. DVD player without CD-RW option
1-1) Download the DVD program from your PC as following procedure
ACTION FLD display
• Plug the Power cord out
• Connect the Fixture for download
(Refer to Deck Mechanism Adjustment)
• Execute the prgram for download(Flashrom.exe)
• Open the DVD program file
• Plug the Power cord in
• Press the MENU Key on the Remote controller FLASH
• Select Down icon with injector icon then start
download from the P.C
■In status of download
• Erased the Flash memory FLASH ERA
• Written the Flash memory FLASH XX(XX: Program counter)
• Verified the Flash memory FLASH XX(XX: Program counter)
• Completed the download FINISHED
■If an error was occurred during download, do not unplug the Power cord, and retry the download
form the P.C until it is completed.
2. DVD player with CD-RW option(for models using C-CUBE
MPEG chip, marking on the IC is ZIVA)
2-1) Make the DVD program upgrade Disc as following procedure
*Recommended S/W: adaptec Easy CD Creater
*use file format: ISO9660
• Rename the souce file from the P.C to FIRMWARE.BIN
(Ex, If Source file is lg_a3_korea.bin, rename to FIRMWARE.BIN)
• Format the CD-RW Disc as below Make the Folder name to UPGRSADE.DVD under root folder
(Ex, UPGRADE.DVD)
• Download the source file renamed to FIRMWARE.BIN in the folder
(Ex, UPGRADE.DVD FIRMWARE.BIN)
- 2-5 -
W
W W
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- 2-6 -
2-2) Insert the upgrade Disc into the DVD player slot, then the DVD player reads the
Disc and upgrade the Firmware itself as followings
Status FLD display on DVD player
• Detect the upgrade Disc No display
• Read the Disc Cd rEAD XX(XX: Program counter)
• Erased the Flash memory FLASH ERA
• Written the Flash memory FLASH XX(XX: Program counter)
• Verified the Flash memory FLASH XX(XX: Program counter)
• Completed the upgrade FINISHED
Note: After completed, plug the Power cord out and in again, and then press the Open key, then the
Disc will be ejected.
Caution: While CD detecting and reading, if Open key or Power is pressed Then download
procedure will be aborted.
3. DVD player with CD-RW option
(for models using NS MPEG chip, marking on the IC is PANTERA)
3-1) Make the DVD program upgrade Disc as following procedure
*Recommended S/W: adaptec Easy CD Creater
*use file format: ISO9660
• Format the CD-RW Disc as below.
Make the Folder name to “lg_dvd UPGRADE lg” under root folder
( lg_dvd_firmware upgrade lg)
• Download the source file in the folder
(Ex, If the source file is “lg_a3_korea.bin, “lg_dvd firmware upgrade lg lg_a3_korea.bin”)
3-2) UPgrade the firmware for DVD player as followings
ACTION FLD display on dvd player
• Insert the upgraded Disc into the DVD player solt Press Up
then starts the detecting
• Press the UP key on the Remote controller READ 0(If error is occurred, displayed
then starts the reading retry counter)
- Starts the upgrading UPGRADE 0(If error is occurred,
displayed retry counter)
- Completed the upgrading FINISHED ➞ checksum
- Opened the Tray Disc (“FINISHED ➞ checksum” is displayed
repeatedly at 2 second intervals)
• Plug the Power Cord out
Note: In the status of FLD with “READ 0” or “UPGRADE 0”
If an error is occured, the read counter, “READ 0”, shows retry counter or “ERROR num”
If the num has 0~2, retry the firmware upgrade procedure.
If the error is continued after retrying 5 times, replace the Flash ROM IC.
W W
W W W
W W W W
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- 2-7 -
WAVEFORMS OF MAJOR CHECK POINT
• IC 208 pin
• Serial data clock waveform during normal play.
• IC 208 pin
• Serial data output wavefrom during normal
play.
1
1
(
2V/Div.
500nS/Div.
OV
(
2V/Div.
500nS/Div.
OV
(
2V/Div.
500nS/Div.
OV
384kHz
(
2V/Div.
500nS/Div.
OV
(
2V/Div.
500nS/Div.
OV
1) 2)
57
• IC 201 pin
• L/R clock data input wavefrom during normal
operation.
• IC 201 pin
• Bit clock data input waveform during normal
operation.
1
1
3) 4)
42 43
• IC 301 pin , , , , , , , , , , , .
• PWM data output wavefrom during normal operation.
1
5)
53 54 56 57 60 61 63 64 67 68 70 71
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- 2-8 -
INTERNAL BLOCK DIAGRAM OF ICs
■ CS4228
■ CS49300
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- 2-9 -
■ CS8415A
■ NJM2279 ■ NJU7312A
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- 2-10 -
■ STA505
(IC710, IC730, IC750, IC770)
■ NJM 2279
(IC102)
■ CS8415
(IC206)
IC VOLTAGE SHEET
PIN No. Volt(V)
1
2
3
432
5
6
732
8
9
10
11
12 32
13
14
15 32
16
17
18
19
20
21
22
23 3.3
24
25
26
27
28
29
30
31
32
33
34
35
36
PIN No. Volt(V)
10
22
30
45
5 1.3
60
70
85
90
10 1.3
11 0
12 1.4
13 5
14 -5
PIN No. Volt(V) PIN No. Volt(V)
1 2.8 15 0
2 2.9 16 1.6
3 3.2 17 1.6
4 2.8 18 0
5 2.8 19 3
6520 0
7021 0
8 2.2 22 3
9 1.6 23 0
10 1.6 24 0
11 0 25 0
12 0 26 3
13 0 27 0
14 0 28
■ PS9702B
(IC301)
PIN No. Volt(V) PIN No. Volt(V) PIN No. Volt(V) PIN No. Volt(V)
1 0 26 0 51 3.21 76 2.92
2 0 27 0 52 0 77 3.21
3 3.21 28 0 53 1.6 78 0
4 4.78 29 0 54 1.6 79 3.28
530550800
6 2.95 31 0 56 1.6 81 3.21
7 1.67 32 3.21 57 1.6 82 3.21
8 0 33 0 58 3.21 83 0
9 0 34 0 59 0 84 3.21
10 0 35 0 60 1.6 85 0
11 0 36 0 61 1.6 86 1.67
12 0 37 0 62 0 87 0
13 0 38 1.62 63 1.6 88 0
14 0 39 0 64 1.6 89 0
15 3.21 40 3.21 65 3.21 90 3.21
16 0 41 0 66 0 91 0
17 0 42 0 67 1.6 92 4.77
18 0 43 0 68 1.6 93 0
19 0 44 0 69 0 94 0
20 0 45 0 70 1.6 95 0
21 0 46 3.21 71 1.6 96 0
22 1.6 47 0 72 3.21 97 0
23 1.64 48 0 73 0 98 0
24 3.21 49 0 74 0 99 3.21
25 0 50 0 75 0 100 0
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- 2-11 -
■ LC87F67
(IC101)
PIN No. Volt(V) PIN No. Volt(V) PIN No. Volt(V) PIN No. Volt(V)
1 0 26 2.45 51 -1 76 -3.25
2 0 27 1.02 52 -1 77 -3.25
3 0 28 1.63 53 0 78 -3.25
4 0 29 4.96 54 -17.71 79 -3.25
5 5.19 30 -1 55 -1 80 4.97
6 0 31 -1 56 -1 81 1.27
7 0 32 -1 57 -1 82 2
8 0 33 -1 58 -1 83 4.98
9 3.23 34 -1 59 -14.91 84 4.98
10 1.21 35 -1 60 1.31 85 4.79
11 4.9 36 -1 61 -3.23 86 1.83
12 0 37 -1 62 -3.23 87 0
13 4.85 38 -1 63 -3.23 88 4.79
14 0 39 -1 64 -3.23 89 0
15 2.4 40 -1 65 4.99 90 4.86
16 2.52 41 -1 66 4.93 91 4.86
17 4.98 42 -1 67 4.93 92 4.33
18 0 43 -1 68 0 93 4.99
19 0 44 -14.91 69 4.97 94 4.99
20 0 45 -1 70 4.97 95 4.86
21 3.58 46 5.4 71 0 96 4.79
22 3.59 47 -1 72 5.08 97 4.79
23 3.59 48 -1 73 0 98 0
24 3.59 49 -1 74 -3.94 99 1.79
25 0.9 50 -1 75 0 100 3.19
■ NJU7312AM(IC501)
PIN No. Volt(V) PIN No. Volt(V)
1 -12 16 0
20 17 0
30 18 0
40 19 0
50 20 0
60 21 0
70 22 0
80 23 0
90 24 0
10 0 25 0
11 0 26 0
12 0 27 0
13 28 0
14 29 0
15 30 12
■ CS4228 (IC205)
PIN No. Volt(V) PIN No. Volt(V)
1 0 16 2.5
2 0 17 2.2
3 0 18 3.5
4 1.5 19 2.2
5 1.5 20 2.2
6 1.5 21 5
722
8 3.2 23 2.3
9 2.5 24 2.3
10 1.6 25 2.3
11 0 26 2.3
12 2.9 27 2.3
13 3.2 28 2.3
14 3.2 29 2.3
■ CS49326(IC201)
PIN No. Volt(V) PIN No. Volt(V)
1 2..4 23 2.5
20 24
3 0 25 1.6
4 0 26 1.6
5271
6 2.9 28 1.6
7 0 29 1.6
8 2.4 30 1
9 2.4 31 0
10 2.4 32 2
11 2.4 33 1.3
12 2.5 34 2.5
13 0 35 0
14 2.4 36 3.2
15 2.4 37 2.5
16 2.4 38 2.5
17 2.4 39 0
18 3.2 40 0
19 1.7 41 0
20 2.4 42 1.6
21 2.4 43 1.6
22 0 44 1.6
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