Toshiba SD-170EKB2 Bedienungsanleitung

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

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 86to

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

Check whether “RFA5V”

(+5V) voltage is normal.

Correct connection

Check the RFA5V power

supply

Check/Re

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

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

Ye s

Yes

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.

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.

Yes

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

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

1-4

Disc cannot be read.

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

1-5

Only DVD disc or only disc except DVD can be played

Yes

Only DVD disc, or only disc

exce

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

Correct connection

Change U1 or the loader.

Yes

Check laser voltage (2.3V)

output on Collector of Q2, if

pin181 of U1is at low level.

Trouble shooting chart

Check whether pins of U1 and

peripheral components are

badly soldered, defected

1-6

No display on LED, and buttons do not work

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

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

Yes

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

Yes

Check the power supply voltages

+12V to the operation amplifying Q27

and -12V are normal.

Yes

Check U15

Replace U1 or U15

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

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