Samsung DVD-P181, DVD-P184, DVD-P186 Service Manual
DVD PLAYER
Chassis : NEXINO
BASIC : DVD
-P181
Application Models:
DVD-P181 / DVD-P184 / DVD-P186
Application Area:
EDC, ELD, NWT, XEC, XEE, XEL, XEO, XET
SERVICE MANUAL DVD-P 181 /DVD-P 184 /DVD- P186
Manual
SERVICE
If you want to know additional information which is not included on this Service
Manual, Please refer to the SKP(Samsung Knowledge Portal) web site.
Area Web Site
North America URL ; http://service.samsungportal.com
Latin America URL ; http://latin.samsungportal.com
CIS URL ; http://cis.samsungportal.com
Europe URL ; http://europe.samsungportal.com
China URL ; http://china.samsungportal.com
Asia URL ; http://asia.samsungportal.com
Mideast & Africa URL ; http://mea.samsungportal.com
DVD PLAYER Contents
1. Precautions
2. Product Specification
3. Disassembly and Reassembly
4. Trouble Shooting
5. Exploded View and Parts List
6. PCB Diagrams
7. Schematic Diagrams
This Service Manual is a property of Samsung Electronics Co .,Ltd.
Any unauthorized use of Manual can be punished under applicable
International and/or domestic law.
© Samsung Electronics Co., Ltd. JAN. 2008
Printed in Korea
CONTENTS CONTENTS
1. Precautions 1-1 ~ 1-6
1-1 Safety Precautions (1-1)
1-2 Servicing Precautions (1-3)
1-3 ESD Precautions (1-4)
1-4 Handling the optical pick-up (1-5)
1-5 Pick-up disassembly and reassembly (1-6)
3. Disassembly and Reassembly 3-1 ~ 3-8
3-1 Cabinet and PCB (3-1)3-1 Cabinet and PCB (3-1)
3-2 Deck (3-5)
4. Trouble Shooting 4-1 ~ 4-22
4-1 Trouble Shooting (4-2)
4-2 Software Update (4-22)
7-4 Front Key (S.M.P.S PCB) (7-6)
7-5 Video (Main PCB) (7-7)
7-6 Audio (Main PCB) (7-8)
7-7 Memory (Main PCB) (7-�)
7-8 Decoder (Main PCB) (7-10)
7-� Power (Main PCB) (7-11)
7-10 Connector (Power Key PCB) (7-12)
7-11 Power Key (Power Key PCB) (7-13)
7-12 Scart (Scart PCB) (7-14)
7-13 Scart Connector (Scart PCB) (7-15)
5. Exploded View and Parts List 5-1 ~ 5-10
5-1 Cabinet Assembly (5-2)
5-2 DVD Mechanical Parts (5-4)
5-3 Electrical Parts List (5-6)
6. PCB Diagrams 6-1 ~ 6-10
6-1 Wiring Diagram (6-2)
6-2 Main PCB (6-3)
6-3 S.M.P.S PCB (6-6)
6-4 Power Key PCB (6-8)
6-5 Scart PCB (6-�)6-5 Scart PCB (6-�)
7. Schematic Diagrams 7-1 ~ 7-16
7-1 All block Diagram (7-2)
7-2 Power (7-3)
7-3 S.M.P.S (S.M.P.S PCB) (7-5)
1. Precautions
1-1 Safety Precautions
1) Before returning an instrument to the customer,
always make a safety check of the entire instrument,
including, but not limited to, the following items:
(1) Be sure that no built-in protective devices are
defective or have been defeated during servicing.
(1)Protective shields are 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
assembly in the cabinet, be sure to put back in place
all protective devices, including, but not limited to,
nonmetallic control knobs, insulating fish papers,
adjustment and compartment covers/shields, and
isolation resistor/capacitor networks. Do not operate
this instrument or permit it to be operated without
all protective devices correctly installed and
functioning.
(2) Be sure that there are no cabinet openings through
which adults or children 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.
(3) Leakage Current Hot Check-With the instrument
completely reassembled, plug the AC line cord
directly into a 230V(220V ~ 240V) AC outlet. (Do
not use an isolation transformer during this test.)
Use a leakage current tester or a metering system
that complies with American National Standardsp
institute (ANSI) C101.1 Leakage Current for
Appliances and Underwriters Laboratories (UL)
1270 (40.7). With the instrument’s AC switch first in
the ON position and then in the OFF position,
measure from a known earth ground
(metal water pipe,
conduit, etc.) to all exposed metal parts of the
instrument (antennas, handle brackets, metal
cabinets,
screwheads, metallic overlays, control shafts,
etc.), especially any exposed metal parts that offer
an electrical return path to the chassis.
Any current measured must not exceed 0.5mA.
Reverse the instrument power cord plug in the outlet
and repeat the test. See Fig. 1-1.
Any measurements not within the limits specified
herein indicate a potential shock hazard that must
be eliminated before returning the instrument to
the customer.
Fig. 1-1 AC Leakage Test
(4) Insulation Resistance Test Cold Check-(1) Unplug
the power supply cord and connect a jumper wire
between the two prongs of the plug. (2) Turn on the
power switch of the instrument. (3) Measure the
resistance with an ohmmeter between the
jumpered AC plug and all exposed metallic cabinet
parts on the instrument, such as screwheads,
antenna, control shafts, handle brackets, etc. When
an exposed metallic part has a return path to the
chassis, the reading should be between 1 and 5.2
megohm. When there is no return path to the chassis,
the reading must be infinite. If the reading is
not within the limits specified, there is the possibility
of a shock hazard, and the instrument must be
repaired and rechecked before it is returned to the
customer. See Fig. 1-2.
Fig. 1-2 Insulation Resistance Test
Samsung electronics 1-1
Precautions
1-2 Samsung Electronics
2) Read and comply with all caution and safety related
notes on or inside the cabinet, or on the chassis.
3) Design Alteration Warning-Do not alter or add to
the mechanical or electrical design of this
instrument.
Design alterations and additions, including
butnotlimitedto,circuitmodicationsandthe
addition of items such as auxiliary audio output
connections, might alter the safety characteristics of
this instrument and create a hazard to the user. Any
design alterations or additions will make you, the
servicer, responsible for personal injury or property
damage resulting therefrom.
4) Observe original lead dress. Take extra care to
assure correct lead dress in the following areas:
(1) near sharp edges, (2) near thermally hot parts (be
sure that leads and components do not touch
thermally
hot parts), (3) the AC supply, (4) high voltage,
and (5) antenna wiring. Always inspect in all areas
for pinched, out-of-place, or frayed wiring, Do not
change spacing between a component and the
printed-circuit board. Check the AC power cord for
damage.
5) Components, parts, and/or wiring that appear to
have overheated or that are otherwise damaged
should be replaced with components, parts and/ or
wiringthatmeetoriginalspecications.
Additionally, determine the cause of overheating
and/or damage and, if necessary, take corrective
action to remove any potential safety hazard.
6) Product Safety Notice-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 higher voltage, wattage, etc. Parts that have
specialsafetycharacteristicsareidentiedby
shading,
an ( )or a ( )on schematics and parts lists. Use
of a substitute replacement that does not have the
same safety characteristics as the recommended
replacementpartmightcreateshock,reand/or
other hazards. Product safety is under review
continuously and new instructions are issued
whenever appropriate.
1-2 Servicing Precautions
Precautions
CAUTION : Before servicing units covered by this
service manual and its supplements, read and follow
the Safety Precautions section of this manual.
Note:Ifunforseencircumstancescreateconict
between the following servicing precautions and any
of the safety precautions, always follow the safety precautions.
Remember: Safety First.
1-2-1 General Servicing Precautions
(1) a. Always unplug the instrument’s AC powercord
from the AC power source before (1) re-moving
or reinstalling any component, circuit board,
module or any other instrument assembly, (2)
disconnecting any instrument electrical plug or
other electrical connection, (3) connecting a test
substitute in parallel with an electrolytic ca
pacitor in the instrument.
b. Do not defeat any plug/socket B+ voltage
interlocks with which instruments covered by
this service manual might be equipped.
c. Do not apply AC power to this instrument and
/or any of its electrical assemblies unless all
solid-state device heat sinks are correctly installed.
d. 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.
(4) An insulation tube or tape is sometimes used and
some components are raised above the printed
wiring board for safety. The internal wiring is
sometimes clamped to prevent contact with heating
components. Install such elements as they
were.
(5) After servicing, always check that the removed
screws, components, and wiring have been installed
correctly and that the portion around the
serviced part has not been damaged and so on.
Further, check the insulation between the blades of
the attachment plug and accessible conductive
parts.
1-2-2 Insulation Checking Procedure
Disconnect the attachment plug from the AC outlet
and turn the power ON. Connect the insulation resistance meter (500V) to the blades of the attachment
plug. The insulation resistance between each blade of
the attachment plug and accessible conductive
parts(see note) should be more than 1 Megohm.
Note : Accessible conductive parts include metal panels,
input terminals, earphone jacks, etc.
Note : Refer to the Safety Precautions section ground
lead last.
(2) 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.
(3)Thecomponentsusedintheunithaveaspecied
ameresistanceanddielectricstrength.
When replacing components, use components
whichhavethesameratings.Componentsidentied
by shading, by( ) or by ( ) in the circuit diagram
are important for safety or for the characteristics
of the unit. Always replace them with the exact
replacement components.
Samsung Electronics 1-3
Precautions
1-4 Samsung Electronics
1-3 ESD Precautions
Electrostatically Sensitive Devices (ESD)
Some semiconductor (solid state) devices can be damagedeasily by static electricity.
Such components commonly are called Electrostatically Sensitive Devices(ESD). Examples of typical ESD
devicesareintegratedcircuitsandsomeeld-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.
CAUTION : Be sure no power is applied to the chassis
or circuit, and observe all other safety precautions.
(8) Minimize bodily motions when handling
unpackaged replacement ESD devices.
(Otherwise harmless
motion such as the brushing together of your
clothes fabric or the lifting of your foot from a
carpetedoorcangeneratestaticelectricity
sufcienttodamageanESDdevice).
(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 devices.
Somesolderremovaldevicesnotclassiedas
“anti-static”cangenerateelectricalchargessufcient
to damage ESD devices.
(5) Do not use freon-propelled chemicals. These can
generateelectricalchargessufcienttodamage
ESD devices.
(6) Do not remove a replacement ESD device from its
protective package until immediately before your
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
materials from the leads of a replacement ESD
device, touch the protective material to the
chassis or circuit assembly into which the device
will be installed.
1-4 Handling the optical pick-up
The laser diode in the optical pick up may suffer electrostatic breakdown because of potential static electricity from clothing and your body.
The following method is recommended.
(1) Place a conductive sheet on the work bench (The
black sheet used for wrapping repair parts.)
(2) Place the set on the conductive sheet so that the
chassis is grounded to the sheet.
Precautions
Fig.1-3
(3) Place your hands on the conductive sheet(This
gives them the same ground as the sheet.)
(4) Remove the optical pick up block
(5) Perform work on top of the conductive sheet. Be
careful not to let your clothes or any other static
sources to touch the unit.
Be sure to put on a wrist strap grounded to the sheet.
Be sure to lay a conductive sheet made of copper
etc. Which is grounded to the table.
(6) Short the short terminal on the PCB, which is inside
the Pick-Up ASS’Y, before replacing the Pick Up. (The short terminal is shorted when the Pick Up Ass’y is being lifted or moved.)
(7) After replacing the Pick-up, open the short terminal
on the PCB.
Samsung Electronics 1-5
Precautions
1-5 Pick-up disassembly and reassembly
1-5-1 Disassembly
1) Remove the power cord.
2) Disassemble the Deck-Assy.
3) Make solder land 2 points short on Pick-up.
(See Fig. 1-4)
4) Disassemble the Pick-up.
Note : If the assembly and disassembly are not done in correct sequence, the Pick-up may be damaged.
1-5-2 Assembly
1) Replace the Pick-up.
2) Remove the soldering 2 points on Pick-up.
3) Reassemble the Deck-Assy.
Fig.1-4
1-6 Samsung Electronics
2. Product Specication
2-1 Product Specication
Power Requirements AC 110~240V ~ 50/60 Hz
Power Consumption 9W
General
Disc
Video Output
Weight 1.3Kg
Dimensions 360mm (W) x 200mm (D) x 37mm (H)
Operating Temperature Range +5° C to +35° C
Operating Humidity Range 10% to 75%
DVD
(Digital Versatile Disc)
CD : 12Cm (Compact Disc)
CD : 8cm (Compact Disc)
VCD : 12Cm
Composite Video 1 channel : 1.0 Vp-p (75 Ω load)
Scart Video
Reading Speed : 3.49 ~ 4.06m/sec.
Approx. Play Time
(Single Sided, Single Layer Disc) : 135min.
Reading Speed : 4.8 ~ 5.6m/sec.
Maximum Play Time : 74min.
Reading Speed : 4.8 ~ 5.6m/sec.
Maximum Play Time : 20min.
Reading Speed : 4.8 ~ 5.6m/sec
Maximum Play Time : 74min
R (red) : 0.7 Vp-p (75 Ω load)
G (green) : 0.7 Vp-p (75 Ω load)
B (Blue) : 0.7 Vp-p (75 Ω load)
Composite Video : 1.0 Vp-p (75 Ω load)
Audio Output
Luminance Signal : 1.0 Vp-p (75 Ω load)
Colour Signal : 0.3 Vp-p (75 Ω load)
Scart Jack 2 Channel : L (1/L), R(2/R)
2 Channel L(1/L), R(2/R)
*Ferquency Response
*S/N Ratio 110dB
*Dynamic Range 100dB
*Total Harmonic Distortion 0.004%
48KHz Sampling : 4Hz to 22KHz
96KHz Sampling : 4Hz to 44KHz
Samsung Electronics 2-1
Product Specication
2-1-1 DVD General Features
●DigitalPhotoViewer(JPEG)
YoucanviewDigitalPhotosonyoutTV.
●MP3/WMA
ThisunitcanplaydiscscreatedfromMP3/WMAle.
●MPEG4
ThisunitcanplayMPEG4formatswithinanavile.
●ParentalControl(DVD)
Theparentalcontrolallowsuserstosetthelevelnecessarytoprohibitchildrenfromviewingharmful
moviessuchasthosewithviolence,adultsubjectmatter,etc)
●VariousOn-screenMenuFunction
youcanselectvariouslanguange(Audio/Subtitles)andscreenangleswhileenjoyingmovies.
●EZView(DVD)
EasyViewenablespictureadjustmenttomatchyourTV’sscreensize(16:9or4:3)
●ProgressiveScan
Progressivescanningcreatesanimprovedpicturewithdoublethescanlinesofa
conventionalinterlacedpicture.
●ExcellentSound
DolbyDigital,atechnologydevelopedbyDolbyLaboratories,providescrystalclear
soundreproduction.
2-1-2 Discs which cannot be played with this player :
2-1-2(a)player
●DVD-ROM
●CD-ROM
●CDI
●DVD-RAM
●CDV
●CVD
●CDGsplayaudioonly,notgraphics.
2-1-2(b)recordingcondition
●DVD-R,+R
●CD-RW
●DVD+rw,-RW(VMode)
●TheunitmaynotplaycertainCD-R,CD-RWandDVD-Rduetothedisctypeorrecordingcondition.
2-2 Samsung Electronics
2-1-3 Disc Type and Characteristics
TheDVDPlayeriscapableofplayingthefollowingtypesofdiscswiththecorrespondinglogos:
<Table 2-1>
Disc Types/Logo Recording Types Disc size Max. Playing Time Characteristics
Product Specication
Audio
+
Video
Audio
+
Video
Audio
Single-Sided 240 min.
12 Cm
Double-single 480 min
Single-Sided 80 min.
8 Cm
Double-single 160 min
12 Cm
8 Cm 20 min.
12 Cm
8 Cm 20 min.
<Table 2-2>
74 min.
74 min.
- DVD contains excellent
sound and video due to
Dolby Digital and MPEG 2
system.
- VariousScreenand audio
functions can be easily
selected through the on
screen menu
- Video with CD sound,
VHS quality & MPEG-1
compression technology.
- CD is recorded as a
digital signal with better
audio quality, less distortion
and less deterioration
of audio quality
over time
FORMAT TYPE APPLICATION
DVD-Video
DVD-ROM
DVD-Audio
DVD-R
DVD-RAM
Playback Only
Read Only
Playback Only
1 Time Recording
Rewritable Data access/storage media for the computer.
High quality image and sound for movies and other video
media
Multi-functional, multi-media software that requires large
storage capacity
High quality sound that exceeds the CD, multi-channel
Audio
Storage media for the computer
Samsung Electronics 2-3
Product Specication
2-1-4 Region Code
TheRegionnumberforthisDVDPlayerisdescribedontherearpaneloftheDVDPlayerdiscplayer.
<Table 2-3>
Disc type DVD-Video
Region code
<Table 2-4>
DVD Region Code Area
Region 1
Region 2 Europe, Japan, Greenland, Egypt, South Africa, The Middle East
Region 3 Taiwan, Hongkong, Korea, South East Asia
Region 4 Mexico, Sout America, Australia, New Zealand
Region 5 Russia, Eastern Europe, India, Africa
Region 6 China
Region 0 Worldwide (all code)
The United States and its territories, canada
2-4 Samsung Electronics
2-2 Chassis Product Specication
General Features DVD-P171 DVD-P181
Chassis
CD Disc Play O O
Compati
bility
Video
Audio
Input /
Output
Convenience
Audio
Accessory
DVD-R/-RW/+R/+RW (Video Mode) O O
CD-R/-RW O O
Progressive Scan Video O O
108MHz/ 14 Bit Video DAC
NTSC X X
System Default PAL PAL
MP3/WMA decoder O O
MIC INPUT X X
Digital Out (DTS/AC-3) O/O O/X
Audio DAC O O
CVBS Output 1CH 1CH
S-Video Output X X
YPbPr Output 1CH 1CH
HDMI X X
Digital Audio Output (Optical/Coaxial) X/O X/O
Analog Audio Output (2ch/5.1ch)
HDMI CEC X X
Scart X O
VCD, SVCD Playback O O
DIVX (MPEG 4) O O
Instant Replay / Skip O O
Kodak picture CD (JPEG) O O
Front Display LED LED
Audio Video Digital Interface O O
HDMI Cable / HDMI to DVI Cable X/X X/X
O/O O/O
O/O O/X
Product Specication
Samsung Electronics 2-5
Product Specication
2-3 Option Product Specication
Description Fig Description Parts No Remark
Remote
Control
Owners Instructions (AK68-01505J)
Video/Audio
Cable
(AK59-00071H)
(AC39-22017Z ==> Single)
(AC39-42001U ==> Double)
Model Standard of
DVD-P181/XEC
Model Standard of
DVD-P181/XEC
Model Standard of
DVD-P181/XEC
2-6 Samsung Electronics
3. Disassembly and Reassembly
3-1 Cabinet and PCB
Note : Reassembly in reverse order.
3-1-1 Top Cabinet Removal
1) Remove 2 Screws q the back Top Cabinet.
2) Lift up the Top Cabinet w in direction of arrow.
q 2 SCREWS
(3X10 B)
Fig. 3-1 Top Cabinet Removal
w TOP CABINET
Samsung Electronics 3-1
Disassembly and Reassembly
3-2 Samsung Electronics
3-1-2 Ass'y Front Cabinet Removal
1) Release 7 Hooks q, w, e, r and Ass'y Front-Cabinet t .
q 1 HOOK
w 2 HOOKS
r 3 HOOKS
e 1 HOOK
t ASSY FRONT CABINET
Fig. 3-2 Ass'y Front Cabinet Removal
3-1-3 Ass'y Deck Removal
1) Disconnect Flat-Cable from DCN1, DCN2 on Main PCB.
2) Remove 3 Screws q from the Ass'y Deck w and lift it up.
q 3 SCREWS
(3X6 W)
Disassembly and Reassembly
w ASS'Y DECK
FLAT-CABLE
DCN2
DCN1
Fig. 3-3 Ass'y Deck Removal
Samsung Electronics 3-3
Disassembly and Reassembly
3-4 Samsung Electronics
3-1-4 Main PCB and S.M.P.S PCB and Scart PCB Removal
1) Remove 4 Screws q from the S.M.P.S PCB w and lift it up.
2) Remove 2 Screws e from the Main PCB r and lift it up.
3) Remove 1 Screw t from the Scart PCB y and lift it up.
e 2 SCREWS
(3X6 W)
r MAIN PCB
q 4 SCREWS
(3X6 W)
w S.M.P.S PCB
t 1 SCREW
(3X6 W)
Fig. 3-4 Main PCB and S.M.P.S PCB and Scart PCB Removal
y SCART PCB
3-2 Deck
3-2-1 Holder Chuck Removal
1) Push 2 Hooks q in the direction of arrow "A" and lift up the Holder Chuck w.
w HOLDER CHUCK
q 1 HOOK
Disassembly and Reassembly
Fig. 3-5 Holder Chuck Removal
q 1 HOOK
Samsung Electronics 3-5
Disassembly and Reassembly
3-6 Samsung Electronics
3-2-2 Tray Disc Removal
1) Insert a Screw Driver q into Emergency Hole w and push the Slider Cam e in the direction arrow "A".
2) When the Tray Disc r comes out,push 2 Hooks t it in the direction arrow "C" and pull in the direction of
arrow "B" by hte hand until released.
e SLIDER CAM
"C"
t 1 HOOK
r TRAY DISC
"B"
"A"
"C"
Fig. 3-6 Tray Disc Removal
t 1 HOOK
w EMERGENCY HOLE
q SCREW DRIVER
3-2-3 Ass'y Traverse Deck Removall
1) Remove the 4 Soldering q (F+, F-, S+, S-).
2) Push 2 Hooks w in the direction of arrow "A" and lift up the Assy Traverse Deck e.
e ASS'Y TRAVERSE DECK
w 1 HOOK
Disassembly and Reassembly
w 1 HOOK
q 4 SOLDERING
Fig. 3-7 Ass'y Traverse Deck Removall
Samsung Electronics 3-7
Disassembly and Reassembly
3-2-4 Ass'y Housing Removal
1) Remove the 2 Soldering q. (M+, M-)
2) Push the 1 Hooks w in the direction of arrow "A" and remove Ass'y PCB Deck e.
3) Push the Slider Cam r in the direction arrow "B" and lift it up.
4) Remove the Belt Pulley t , 2 screws y and Ass'y Motor Load u.
5) Lift Up Gear Pulley i and Gear Tray o.
"B"
o GEAR TRAY
y 2 SCREW
u ASS'Y MOTOR LOAD
q 2 SOLDERING
i GEAR PULLEY
e ASS'Y PCB DECK
r SLIDER CAM
t BELT PULLEY
w 1 HOOK
Fig. 3-8 Ass'y Housing Removal
3-8 Samsung Electronics
4. Trouble Shooting
4-1 Trouble Shooting -------------------------------------------------------------------------------- 4-2
4-2 Software Update ------------------------------------------------------------------------------- 4-22
Samsung Electronics 4-1
Trouble Shooting
4-2 Samsung Electronics
4-1 Trouble Shooting
No pick-up home positing
Is IC2-21
(SLED-PWM}
output is normal ?
Yes
IS
SL+, SL-
(IC3 - 17, 18)
output are normal ?
Yes
Check the Sled Motor and
Connection
No
Refer to a pattern
image of Table 4-1
No
Refer to a pattern
image of Table 4-1
Check IC2.
Check IC3.
Peripheral Circuit
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