Toshiba SD-170EKB2 Manuel utilisateur
DVD VIDEO PLAYER
The above models are classified as green products (*1), as indicated by the underlined serial
numbers. This Service Manual describes replacement parts for the green products. When
repairing these green product(s), use the part(s) described in this manual and lead-free solder
(*2).
Oct. 2007 GREEN
TOSHIBA CORPORATION 2007
C
File No. 810-200795GR
SERVICE MANUAL
SD-170EKB2
SD-170EKE2
For (*1) and (*2), see the next page.
(*1) GREEN PRODUCT PROCUREMENT
The EC is actively promoting the WEEE & RoHS Directives that define standards for recycling
and reuse of Waste Electrical and Electronic Equipment and for the Restriction of the use of
certain Hazardous Substances. From July 1, 2006, the RoHS Directive will prohibit any
marketing of new products containing the restricted substances.
Increasing attention is given to issues related to the global environmental. Toshiba Corporation
recognizes environmental protection as a key management tasks, and is doing its utmost to
enhance and improve the quality and scope of its environmental activities. In line with this,
Toshiba proactively promotes Green Procurement, and seeks to purchase and use products,
parts and materials that have low environmental impacts.
Green procurement of parts is not only confined to manufacture. The same green parts used in
manufacture must also be used as replacement parts.
(*2) LEAD-FREE SOLDER
This product is manufactured using lead-free solder as a part of a movement within the
consumer products industry at large to be environmentally responsible. Lead-free solder must
be used in the servicing and repair of this product.
WARNING
This product is manufactured using lead free solder.
DO NOT USE LEAD BASED SOLDER TO REPAIR THIS PRODUCT !
The melting temperature of lead-free solder is higher than that of leaded solder by 86to
104(30ćto 40ć). Use of a soldering iron designed for lead-based solders to repair product
made with lead-free solder may result in damage to the component and or PCB being
soldered. Great care should be made to ensure high-quality soldering when servicing this
product-especially when soldering large components, through-hole pins, and on PCBs- as the
level of heat required to melt lead-free solder is high.
. Trouble Shooting Chart……………………………….……….……...…….….…1-1
. Block Diagram………………………………………………………….…..…..….2-1
. Wiring Diagram……………………………………...…………….............…..….3-1
. Electrical Circuit Diagrams
Front Board………………………………………...…………...………....…….4-1
Power Board………………………………………………..…………..….........4-2
Main Board………………..………………………………...…….…..……...….4-3
. PCB Print-layouts
Front Board…………………………………….………………………....…......5-1
Power Board………………………………………………………….…...….....5-2
Main Board………………..…………………...………….……..….……......…5-3
. Set Mechanical Exploded view& Electrical Parts List………..………..……....6-1
. Part List
Electrical Part list for Front Board……………………………………..…....…7-1
Electrical Part list for Power Board………………………..…….….….....…..7-2
Electrical Part list for Main Board…………………………….…..…..…….…7-3
. Technical Specifications…………………………………….….…….….….….....8-1
. Revision List……………………………………………………….………....…....9-1
TABLE OF CONTENTS
Page
1-1
Spindle motor does not move
Yes
Yes
No
No
No
No
Yes
Check whether “RFA5V”
(+5V) voltage is normal.
Correct connection
Check the RFA5V power
supply
Check/Re
p
lace Q2ǃQ3.
Check/ Replace U1.
Have no focus
Check U1 182pin FOCUS_PWM
signals
2.If there are F+, F-, T+ and T-
signals output from U7.
Check/Replace the loader
Yes
Yes
No
Go
Check whether laser voltage
(2.3V for DVD & 1.9V for CD)
on Collector of Q2 and Q3
Check the FFC connection
between 24P and the loader.
1.Whether voltage on pin 129 of
U1 varies between 0 and 3.3V
(3.3V for CD and 0V for DVD),
2.Whether peripheral components
are eroded or badly soldered.
Trouble shooting chart
Motor no move
FOCUS_PWN waveform
1-2
The power can not be on or off
Go
Ye s
Yes
No
No
The power can’t be
on or off
Yes
Repair the power board
Check the power supply
on the power board is
normal.
Check/Correct connection
Whether the connection
to S1 is broken. Correct the connection
Replace U1.
No
No
Yes
Yes
Check if the CN3 on
the front board to CN5
on the decoder board
is in good contact.
Whether there is 0V and
3.3V voltage difference on
Pin 94 PCON of U1.
Trouble shooting chart
1-3
All output voltages on the power board is 0V or deviated.
No
No
No
Yes
No
U1(PIN 8 - Drain waveform)
Replace F1
Replace C1&C2 if D1, D2, D3, D4 are
normal.
Check/ replace U1.
Check whether U1 are eroded.
All output voltages on
the power board is 0V or
deviated
Check if +5V, , +12V and
-12V are short.
Check whether the components in the
short-circuit voltage are defected or eroded.
Yes
Yes
Yes
Yes
U1(PIN 3 - RC waveform)
Check whether
F1 is blown
Trouble shooting chart
Check whether
there is 300V on C1
Check whether 100KHz
oscillating signal on Pin6 o
f
U1
1-4
Disc cannot be read.
No
Yes
No
Yes
No
Yes
Yes
No
Yes
Disc cannot be read.
Check the loaded circuit
1.Check voltage on pin 100 of U1
varies between 0 and 3.3V:
Æ3.3V for CD
Æ0V for DVD
2.Check whether peripheral
components are eroded or defect
Check the FFC connection
between 24P and the loader.
Check U1 and peripheral
components
Re-solder or replace the defective
parts
Check the connection
between U1 and loader
Correct connection
Replace U1 or loader.
Yes
Check whether there is laser
voltage (2.3V for DVD and 1.9V
for CD) on Collector of Q2 &Q3
Check if there is RFO signal on
pin10 of CN2. (The normal RFO
signal is a clear reticulated wave)
Check U1, U7, and peripheral
components are eroded or
badly soldered.
Trouble shooting chart
No
1-5
Only DVD disc or only disc except DVD can be played
No
No
Yes
Only DVD disc, or only disc
exce
p
t DVD can be Played.
Check the FFC connection
between 24pin and the loader. Check the loaded circuit
Check the solder status on U1 and
peripheral components
Check whether there is voltage
variance on pin 182 of U1.
check if bad solder exist on U1 and
peripheral components
Replace the bad spare parts
Check Q2 whether
in good condition
Yes
Yes
Yes
Go
Correct connection
Change U1 or the loader.
No
No
Yes
Check laser voltage (2.3V)
output on Collector of Q2, if
pin181 of U1is at low level.
No
Trouble shooting chart
No
Check whether pins of U1 and
peripheral components are
badly soldered, defected
1-6
No display on LED, and buttons do not work
No
No
No
Yes
Yes
No display on LED, and
buttons do not work
Check whether there is
correct contact between CN3
and CN5
Correct connection
Fix power supply board top
a power supply for should
Check the U1’s pin 131,132,133
arrive the CN5 connect condition
Correct connection
Replace U1 or LED
Yes
Yes
Yes
No
Check VCC(+5v) voltage on
the power and front board
Check there are CS,
DATA and CLK signals on
CN3 on the front board.
1.Check whether bad solder exists
On U1 and pins of LED,
2.Check whether the circuit connected
to S1, S2,S3 and S4 is broken,
3.Check whether R6, R7 and R8
are open-circuit.
CN5 (PIN 2 CLK) CN5 (PIN4 DOUT)
Trouble shooting chart
1-7
Distorted audio and loud noise
No
Yes
No
Yes
Yes
No
No
Distorted audio and
loud noise
Replace R176 and R175
Check Q27
Replace Q17~Q18
Yes
Checking the U15 leads the feet
has no to break to open Correct connection
Replace U1
if the clock signal AOUT0,
ABCK and ALRCK output by
U1 are normal
Check whether the U1
or U15 powersupply
No
Yes
Check the power supply voltages
+12V to the operation amplifying Q27
and -12V are normal.
Yes
Check U15
Replace U1 or U15
No
Yes
SACLK waveform SBCLK waveform SSLRCK waveform
Trouble shooting chart
Check whether the muting
transistor Q17,Q18, are normal
Check whether the muting
transistor R176 andR175 are
normal
Ce manuel convient aux modèles suivants
1
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