Toshiba RDXS-64-SF, RDXS-64-SG Service manual
FILE NO. 810-200574
SERVICE MANUAL
HDD & DVD RECORDER
RD-XS64SF
RD-XS64SG
SEP. 2005 S
CONTENTS
1. Precautions
2. Product Specification
3. Software Update
4. Disassembly and Reassembly
5. Troubleshooting
6. Exploded View and Parts List
7. Electrical Parts List
8. Block Diagram
9. Wiring Diagram
10. PCB Diagrams
11. Schematic Diagrams
12. Operating Instructions
13. Circuit Operating Descriptions
14. Reference Information
1-1
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 Standards
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
(READING SHOULD
NOT BE ABOVE
0.5mA)
EARTH
GROUND
DEVICE
UNDER
TEST
TEST ALL
EXPOSED METER
SURFACES
2-WIRE CORD
ALSO TEST WITH
PLUG REVERSED
(USING AC ADAPTER
PLUG AS REQUIRED)
LEAKAGE
CURRENT
TESTER
Antenna
Terminal
Exposed
Metal Part
ohm
ohmmeter
Precautions
1-2
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
but not limited to, circuit modifications and the
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
wiring that meet original specifications.
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 special safety characteristics are identified by 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
replacement part might create shock, fire and/or
other hazards. Product safety is under review continuously and new instructions are issued whenever appropriate.
Precautions
1-3
1-2 Servicing Precautions
CAUTION : Before servicing units covered by this
service manual and its supplements, read and follow
the Safety Precautions section of this manual.
Note : If unforseen circumstances create conflict
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 power cord
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 capacitor in the instrument.
b. Do not defeat any plug/socket B+ voltage inter-
locks 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.
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) The components used in the unit have a specified
flame resistance and dielectric strength.
When replacing components, use components
which have the same ratings. Components identified 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.
(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.
Precautions
1-4
1-3 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 devices.
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 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 ma-
terials 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.
CAUTION : Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.
(8) Minimize bodily motions when handling unpack-
aged 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).
Precautions
1-5
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.
(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.
Fig.1-3
(6) Short the short terminal on the PCB, which is in-
side the Pick-Up ASS’Y, before replacing the PickUp. (The short terminal is shorted when the PickUp Ass’y is being lifted or moved.)
(7) After replacing the Pick-up, open the short termi-
nal on the PCB.
WRIST-STRAP
FOR GROUNDING
1M
THE UNIT
1M
CONDUCTIVE SHEET
Precautions
1-6
MEMO
2-1
Power requirements AC 220~240V ,50Hz
Power consumption 45 Watts
General
Weight 4.2 Kg
Dimensions 432mm(W) x 259mm(D) x 78.5mm(H)
Operating temp +5°C to +35°C
Other conditions Keep level when operating. Less than 75% operating humidity
Video Composite Video : 1.0 V p-p at 75ohm load, sync negative
Audio Max. Audio input level : 2Vrms
DV Input IEEE 1394(4p) compatible jack
Input Receivable Channels PAL-B/G, D/K, SECAM-L/L’ (Only France)
Scart Jack
AV1 (Scart TV) Video : Composite, Audio : analogue
AV2 (Scart Ext) Video : Composite, RGB Audio : analogue
Audio
Analogue output jacks X 2
Optical/coaxial digital audio output
Composite Video : Video output jack X 1
Output
Video S-Video output X 1 (Y: 1.0Vp-p, C:0.286Vp-p at 75Ω load)
Component output X 1 (Y: 1.0Vp-p ,Pb:0.70Vp-p, Pr:0.70Vp-p at 75Ω load)
HDMI/DVI (576p)
Scart Jack AV1 (Scart TV) Video : Composite, RGB Audio : analogue
Picture compression format MPEG-2
Audio compression format Dolby digital 2ch/256kbps, MPEG-2
Recording
Recording Quality
XP (about 8.5 Mbps), SP (about 4.5 Mbps), LP (about 2.5 Mbps),
EP (about 1,6 Mbps or about 1,2 Mbps)
Audio frequency characteristics 20 Hz ~ 20 KHz
HDD capacity 160GB
2. Product Specification
2-1 Product Specification
Product Specification
2-2
MEMO
3-1
3. Software Update
3-1 Drive Firmware Update
3-1-1 Introduction
Toshiba will often support software update to improve the performance of DVD Recorder & VCR to the latest status.
3-1-2 How to make an update disc
• Recommended Application Program
- Nero Burning / Easy CD Creator ..etc
• Option
- Name : SDM2224
- Extension name : “*.REC”
- Multisession : No Multisession
- File name lenght : Max. of 11 = 8 + 3
- Format : Mode 1
- Character set : ISO 9660 or Joliet Format
- CD Close & Dise at once
N O T E
Very important : please read the notice below before updating your unit.
The following events may interrupt the update process and MAY RESULT IN PERMANENT DAMAGE TO THE UNIT WHILE UPDATING
! Unplugging the power cord.
@ Power Outage.
# Dirt or Scratches on the disc.
$ Opening a disc tray during processing.
WARNING
3-2
Software Update
Fig. 3-1
* If you don’t see the message above, try another disc. Generally, this is caused by disc quality and by disc creating problem.
4) Press the OK button on the remote control (Fig. 3-2).
Fig.3-3
5) It takes about 1~2 minutes to complete the update.
The message below will be displayed in the screen after update is completed and the tray will open automatically.
Fig. 3-4
6) After removing the update disc, turn off the unit with power button.
Turn on the power again the tray will then close.
The drive firmware is now complete.
Drive Update
Do you want to update drive-firmware?
Version: XX.X.RD_XS64 -> XX.X.RD_XS64
No
Yes
Atfer checking old and new version, select “Yes” or “No”
with “ ” or “ ” on the remote control.
* The Version is indicated by “XX.X modelname”
You will see “LOAD” on FLT Display.
Drive Update
Now, processing...
please, do not turn off the power.
Drive Update
Drive firmware is successfully
updated.
Fig. 3-5
1) Press OPEN/CLOSE to open the disc tray.
2) Insert the update CD-R disc with the software update, label
facing up.
3) Press OPEN/CLOSE to close the disc tray.
* It takes about 1~2 minites before the mesage below appears.
Fig. 3-2 Remote Control
Software Update
3-3
3-2 Flash Update
3-2-1 Introduction
Toshiba will often support software update to improve the performance of DVD Recorder & VCR to the latest status.
3-2-2 How to make an update disc
• Recommended Application Program
- Nero Burning / Easy CD Creator ..etc
• Option
- Multisession : No Multisession
- CD close & disc at once
- ISO 9660 or joliet format
- Extension name : “*.RUF”
• In order to increase disc playability, add a dummy file (over 100MB) together with the latest program.
(The dummy file can be any kind of file except MP3 file etc which can be played in the unit and we recommend to use a file whose
extension name as “*.dmy”, which can be changed from original one.)
N O T E
Very important : please read the notice below before updating your unit.
The followong events may interrupt the update process and MAY RESULT IN PERMANENT DAMAGE TO THE UNIT WHILE UPDATING
! Unplugging the power cord.
@ Power Outage.
# Dirt or Scratches on the disc.
$ Opening a disc tray during processing.
WARNING
3-4
Software Update
Fig. 3-6
* If you don’t see the message above, try another disc.
Generally, this is caused by disc quality and by disc creating problem.
4) Press the OK button on the remote control (Fig. 3-7).
Fig. 3-8
5) It takes about 5 minutes to complete the update.
The message below will be displayed in the screen after update is completed and the tray will open automatically.
Fig. 3-9
6) After removing the update disc, turn off the unit with power button.
Turn on the power again and the tray will then close.
The Flash update is now complete.
* If the message to the left isn’t displayed after 10minutes
and the unit is no longer functioning properly, contact a
samsung authorized service center.
Atfer checking old and new version, select “Yes” or “No”
with “ ” or “ ” on the remote control.
* The Version is indicated by “YYMMDD.xx modelname”
Flash Update
Do you want to update flash memory?
Version : YYMMDD.xx.RD_XS64
-> YYMMDD.xx.RD_XS64
No
Yes
Flash Update
Now, Processing...
Plase. do not turn off the power.
Flash Update
Flash memory is successfully
updated.
1) Press OPEN/CLOSE to open the disc tray.
2) Insert the update CD-R disc with the software update, label
facing up.
3) Press OPEN/CLOSE to close the disc tray.
Fig. 3-7 Remote Control
4-1
4. Disassembly and Reassembly
4-1 Cabinet and PCB
4-1-1 Top Cabinet Removal
1) Remove 5 Screws Œ, ´.
2) Lift up the Top Cabinet in direction of arrow.
Fig. 4-1 Top Cabinet Removal
Note : Reassembly in reverse order.
4-2
Disassembly and Reaasembly
Fig. 4-2 Ass’y Front-Cabinet Removal
4-1-2 Ass’y Front-Cabinet Removal
1) Release 6 Hooks Œ, ´, ˇ, ¨ and Ass’y Front-Cabinet ˆ.
1 HOOK
2 HOOKS
2 HOOKS
1 HOOK
ASS'Y FRONT-CABINET
Disassembly and Reaasembly
4-3
4-1-3 HDMI PCB Removal
1) Remove 1 Screw Œ, from HDMI PCB ´ and lift it up.
Fig. 4-3 HDMI PCB Removal
HDMI PCB
1 SCREW
4-4
Disassembly and Reaasembly
4-1-4 Hard Disk Removal
1) Remove 8 Screws Œ, ´.
2) Remove 4 Screws ˇ, ¨ from the Hard Disk ˆ and lift it up.
Fig. 4-4 Hard Disk Removal
Disassembly and Reaasembly
4-5
Fig. 4-5 Ass’y Deck, Main PCB and S.M.P.S. PCB Removal
4-1-5 Ass’y Deck, Main PCB and S.M.P.S. PCB Removal
1) Remove 4 Screws Œ, ´ from the Ass’y Deck and lift it up.
2) Remove 2 Screws ˇ from the Main PCB ¨ and lift it up.
3) Remove 2 Screws ˆ, Ø from the S.M.P.S. PCB ∏ and lift it up.
4-6
Disassembly and Reaasembly
Fig. 4-6 Jack PCB Removal
4-1-6 Jack PCB Removal
1) Remove 4 Screws Œ, ´, from the Jack PCB ˇ and lift it up.
3 SCREWS
JACK PCB
1 SCREW
Disassembly and Reaasembly
4-7
4-1-7 DC FAN Removal
1) Remove 2 Screws Œ, from the DC Fan ´ and lift it up.
Fig. 4-7 DC FAN Removal
DC FAN
2 SCREWS
4-8
Disassembly and Reaasembly
4-2 PCB Location
Fig. 4-8 PCB Location
HDMI PCB
MAIN PCB
JACK PCB
S.M.P.S. PCB
5-1
5. Troubleshooting
NO Power Detected
(Stand by LED OFF)
PAFT1 is normal?
Yes
Pin 6 of IC701 is normal?
No
PVDLL1, PSDZ1
PFZZ1, PVZL1
SHOR and OPEN
Are normal?
Yes
Is there voitage at
Collector of
PQQX1
No
Yes
No
No
Change fuse
Change DT701 LED Module
Change short circuited or
opened parts
Check 2st voltage
Yes
Operation of PQQX1 is
Normal?
Yes
Check feed back PQIZ1
No
Replace PQQX1
Tr oubleshooting
5-2
CVBS(Video) output error
Pin 12 in CN3 of Jack PCB or
CN2 of main PCB has
normal level?
Yes
Analog signals are
inputed normally
VIC1(pin4)
Yes
Power is
normal(5V) at VIC(pin1,28)?
Yes
Pin3 in VIC1 is
in high state?
No
No
No
No
Check the DIC1 on MAIN B/D
Check the connection between
pin 12 in CN3 of Jack PCB and VIC1
Check the connection between
VIC1(pin1,28) and power line(FD6,VL6).
Check the connection between
VIC1(pin 3) and FIC1(pin 39).
check VIC1 peripheral circuit
Yes
Video signal of
About P-P1V appears at
Output jack?
Yes
Check the RCA cable
# IF Recorder is under PSO(progressive scan output) MODE, it does not
No
CVBS(Color-bar)
output the CVBS& S-Video, RGB signal.
Check the connection between
VIC1 and output jack
Tr oubleshooting
5-3
Component (Y, Cb, Cr) output error
Pin 2, 4, 6 in CN3 of
Jack PCB or CN2 of Main PCB
has normal level?
Yes
Analong signals are
inputted normally
VIC1 (pin10/12/14)
Yes
Power is normal (5V) at
VIC1(Pin1,28)?
Yes
Pin3 in VIC1 is
in high state?
No
No
No
No
Check the DIC1 on MAIN B/D.
Check the connection between
pin 2, 4, 6 in CN3 of JACK PCB and VIC1
Check the connection between
VIC1(pin1,28) and Power line (pin 4 of PCN1)
Check the connection between
VIC1(pin 3) and FIC1 (pin 39).
Check VIC1 peripheral circuit.
Yes
Video signal of
About P-P1V appears at
Output Jack?
Yes
Check the RCA cable
# IF Recorder is under PSO(progressive scan output) MODE, or it does not
No
Y(Color-bar)
output the CVBS& S-Video signal.
Check the connection between VIC1
Pb(Color-bar)
and output jack
Pr(Color-bar)
Tr oubleshooting
5-4
S-Video output error
Pin 10 and pin 8 in CN3 of
jack PCB or CN2 of Main
PCB has normal level?
Yes
Analog signals are
inputted normally
VIC1(pin4)
Yes
Power is normal (5V)
at VIC1(pin1,28)?
Yes
Pin13 in VIC1 is
In high state?
Yes
No
No
No
No
Check the DIC1 on Main PCB.
Check the connection between pin 10 and
pin 8 in CN3 of Jack PCB and VIC1
Check the connection between
VIC1(pin1,28) and power line(pin4 of PCN1).
Check the connection between
VIC1(pin13)and FIC1(pin44)
Check VIC1 peripheral circuit.
Video signals of
about P-P1V appears at
output jack?
Yes
Check the S-Video cable
No
Y(Color-bar)
Check the connection between
VIC1 and output jack
C(Color-bar)
Tr oubleshooting
5-5
AV1 (RGB) Output Error
Pin 2, 4, 6 in CN3
of Jack PCB or CN2 of Main PCB
has normal level?
Yes
Analog signals are
inputted normally
VIC1(pin 10, 12, 14)
Yes
Power is
normal at VIC1-1,28?
Yes
RGB control signal
level is 4V at pin 16 of
SCJ1 (AV1JACK)?
No
No
No
No
Check Main PCB
Check the connection between 2,4 and
pin 6 in CN3 of Jack PCB and VIC1
Check the connection between
1, 28 of VIC1 and power
Check the connection between
pin 13 of SIC1 and AV1 jack
Yes
RGB Video signal
appears at pin 7, 11, 15 of
AV1 output jack?
Yes
Check the RCA cable
# IF Recorder is under Component mode (in OSD setup menu),
No
it does not output RGB out put.
Check the connection between
VIC1 and output jack
Tr oubleshooting
5-6
AV1, AV2 (CVBS) output error
pin 12 of CN3 in
Jack PCB has normal
level?
Yes
Analog signal are
Inputted normally
pin 5 of SIC1
Yes
Analog signal are
out normally
SIC1-29(AV2),30(AV1)
Yes
Check the connection between
SIC1 and SCART Jack
-AV1 ; 30pin of SIC1 and 19pin of AV1
-AV2 : 29pin of SIC1 and 40pin of AV2
No
No
No
Check Main PCB
Check the connection between
pin 12 of CN3 in Jakc PCB and SIC1
Check the power
supply to pin 2, 4, 6 of SIC1?
Yes
Check the I2C lin2
(between SIC1-32, 33
and FIC1-27, 28)
No
Check the SMPS
(AL5.8V)
Tr oubleshooting
5-7
AV2 (RGB) Input Error
Video signal of
about 0.7V appears at input jack?
(pin 28, 32, 36 of AV2)
Yes
RGB control signal
level is 4V at pin 27 of SCJ1
(AV1JACK)?
Yes
Check the power
supply to pin 2, 4, 6 of SIC1
Yes
CN3-19,21,23 of
Jack PCB or CN2 of Main PCB
has normal level?
No
No
No
No
Check the Scart cable
Check Video out of TV is set RGB mode.
Check the SMPS(AL5.8V)
Check the I2C line
(between SIC-32, 33
and FIC1-27)
No
Yes
Check Main PCB
Yes
Check the connection between
CN3-19, 21, 23 and Scart Jack.
Check the pins of FIC1
is not short
Tr oubleshooting
5-8
AV3 CVBS Video Input Error
Pin 15 in IC201
has normal level?
Yes
Pin 3 in IC201(Input MUX)
has normal level?
Yes
CN3-13 of
Jack PCB or CN2 of Main PCB
has normal level?
No
No
No
Check the connection between
pin15 in IC201 and AV3 pin-jack
Check the connection between
IC201-9, 10, 11 and FIC1
Control signal of pic9, 10, 11 in
IC201 is as below.
AV3 Input : L/H/L
AV2 Input : H/H/H
AV1 Input : L/H/H
PROG Input : L/L/L
Check the connection between CN3-13
of jack PCB and pin 3 in IC201
Yes
Change Main PCB
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