Philips AS2000-02 Datasheet

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For internal use only PHILIPS

ISSUE AS2000.02 (00-02-10)

Published by: Service Depar tment Audio Systems

LINE OF BUSINESS AUDIO SYSTEMS

02.01 TYPENUMBER(S): CDR200, CDR538, CDR560, CDR760, CDR765

INFORMATION : For repair of the power supply unit a special service kit containing the

mosts sensitive components has been created. It can be ordered with service codenumber 3122 785 90130.

The service kit contains the following parts: 1120, 3109, 3113, 3126, 3127, 3128, 6113, 6210, 7110, 7125, 7200

REMARKS :

02.02 TYPENUMBER(S): CDR200, CDR538, CDR560, CDR760, CDR765

SYMPTOM :

Power supply is defective.

CURE : It is advised to repleace the following items:

• pos. 7125 (STP4 or STP3) by STP5

• pos. 6210 (PBYR745) by PBYR10100

REMARKS : For repair of the power supply unit a special service kit

3122 785 90130 is available (see 02.01 for details). Items 6210 and 7125 can also be ordered separately: Pos Codenumber Article description

—————————————————–————6210 9340 205 70127 PBYR10100 7125 9322 126 65687 STP5

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SERVICE NEWSLETTER

Service Newsletter 2000 – Audio Systems 1/6

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02.03 TYPENUMBER(S): CDR200, CDR538, CDR560, CDR760, CDR765

SYMPTOM :

Short interruptions in recordings.

CURE : The problem is most probably caused by unstable operation of the

power supply. It is advised to repleace the following items:

• pos. 7125 (STP4 or STP3) by STP5

• pos. 6210 (PBYR745) by PBYR10100

REMARKS : For repair of the power supply unit a special service kit

3122 785 90130 is available (see 02.01 for details). Items 6210 and 7125 can also be ordered separately: Pos Codenumber Article description

—————————————————–————6210 9340 205 70127 PBYR10100 7125 9322 126 65687 STP5

02.04 TYPENUMBER(S): CDR770 INFORMATION : The correct codenumber for the complete (and adjusted)

CDR-Module reads 3104 129 52521. For this module a central repair procedure has been initiated.

The loader assembly, pos. 81 in the partslist (9305 043 20901), cannot be used for repair because the CDL4009 needs an extra adjustment on the mainboard which cannot be carried out on first level.Please do not order these loaders, as they are reserved for the central repairshop only.

REMARKS :

02.05 TYPENUMBER(S): FW-C1, FW-C3, FW-C10, FW-C30, FW-C35

SYMPTOM :

The cassette door will not open completely when a cassette is inside the cassette compartment.

CURE : The capstan pin (pos. 41) of the tape mechanism will not disengage

fully from the cassette tape.The problem is caused by a combination of the following:

a) Leaf springs (pos. 199) which are responsible to create a rotating

movement for the cassette during “door eject” are too weak to push the cassette out of the capstan pin.

b) Mis-matched housing parts of the cassette (see fig. 1) rub/scratch

against the support ribs of the cassette door (pos. 200).

c) Uneven cassette door support ribs create an additional fr iction to

the rotating movement of the cassette.

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The problem is resolved by:

1) Cutting 2 ribs (both sides) on the cassette door in order to enable a bigger rotational movement for the door during eject (see figure 2 & 3).

2) Increasing the spring force on the cassette by pulling the spring in the direction and up to the level shown in figure 3.

Caution: Ensure that the cassette is able to smoothly slide into the

cassette door before returning the set to the customer !

REMARKS :

3mm

Cut away this shaded area

Figure 3. Portion of the Cassette door

Horizontal Line

Leaf Spring should not be higher than this corner of the cassette door

Cassette support rib that is uneven

Pull Leaf Spring in this direction

Problem Leaf Spring

Mis-match cassette tape housing (bare tape side)

Figure 1. Portion of Problem

Cassette Tape

Figure 2. Location of the ribs for rework

The 2 ribs that must be cut lower

Service Newsletter 2000 – Audio Systems 3/6

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02.06 TYPENUMBER(S): FW-C1, FW-C3, FW-C10, FW-C28, FW-C30, FW-C35, FW-C38,

FW-C39

SYMPTOM :

A high frequency pitch (around 4kHz - 5kHz) is audible from the front display panel in quiet environment.

CURE : The source of the noise comes from the filtering SMD capacitors

2418, 2420, 2476 and 2477. The problem is resolved by adding 2 elcaps of 4,7µF (4822 124 40769) in series across the existing SMDs capacitors of the -F2 supply line. The elcaps can by soldered onto the copperside of the Front board as indicated in the circuit and SMD layout view below.

Rework procedure:

1) Dismantle the Cover CDC and Front assembly.

2) Prepare the 2 elcaps of 4,7µF (4822 124 40769) in series.

3) Place an insulation tape onto the Front board (area under the elcaps) to prevent the elcaps and their leads from short-circuiting to the surrounding SMD components and pads.

4) Position the elcaps horizontally over the insulation tape and solder them to the copper pads as shown. Make sure that the elcaps are close to the Front board so that there is no contact to the moving parts of the CDC module.

5) Re-assemble the Front assembly and Cover CDC.

REMARKS :

F1 F2

3483

9522

9521

3471

2476

FTD

2477

1401

2418

P147P156P16

P0318P0417P0516P0615P0714P0813P0912P10

P119P12

P13

09G2510G2411G2312G

F1a1F1b

F2a39F2b

P0120P02

1400 BJ722GNK

01G3302G3203G3104G3005G

06G2707G

08G

2420

P1511P16

P0422P0521P06

P07

P0818P0917P1016P1115P1214P1313P14

11G

12G2813G2714G

F1a1F1b

F2a49F2b

P0125P0224P03

1438 HN-14NN12T

01G4002G

03G

04G3705G3606G3507G3408G3309G3210G

F2 F1

Large FTD Display

Small FTD Display

FTD

4u7 4u7

Pre-prepared elcos in series

Twist & soldered together

Portion of the Front Board (SMD side)

Portion of the Front Circuit

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Service Newsletter 2000 – Audio Systems 4/6

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02.07 TYPENUMBER(S): FW-C50, FW-C55, FW-C58, FW-C70, FW-C71, FW-C72, FW-P73,

FW-P-75, FW-P78

SYMPTOM :

A high frequency pitch (around 4kHz - 5kHz) is audible from the front display panel in quiet environment.

CURE : The source of the noise comes from the filtering SMD capacitors

2483 - 2486 for the FTD display supply -F1 and -F2. The problem is resolved by adding 2 elcaps of 4,7µF (4822 124 40769) in series across the existing SMDs capacitors of the -F1 supply line. The elcaps can by soldered onto the copperside of the Front board as indicated in the circuit and SMD layout view below.

Rework procedure:

1) Dismantle the Rear Cover, Cover CDC and CDC Module.

2) Prepare the 2 elcaps of 4,7µF (4822 124 40769) in series.

3) Place an insulation tape onto the Front board (area under the elcaps) to prevent the elcaps and their leads from short-circuiting to the surrounding SMD components and pads.

5) Re-assemble the CDC Module, Cover CDC and Rear Cover.

REMARKS :

3430

3448

2486

3438

3434

41 42 4344 45 46 47 48 5152 536 7 8 9 26 27 28293 30 3132 33 34 35 36 3738 39 4011 1213 14 15 16 17 18192 202122232425

1415

110

3446

3442

3447

2483

3443

3451

3452

3431

3436

3439

3437

3435

2485

3560

3449

9401 3561

3433

9400

3432

3444

3450

3440

3441

3445

3429

2484

FTD Display

4u7 4u7

Portion of the Front Circuit

Portion of the Front Board (SMD side)

Pre-prepared elcos in series

Twist & soldered together

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02.08 TYPENUMBER(S): FW748P, FW-P73, FW-P75

SYMPTOM :

In DPL mode the volume increases spontaneously and turns back to normal level later (especially at the center loudspeaker).

CURE : The problem is caused by insufficient current on the VOL_CLK

(DPL_V_CLK) line to drive pin 5 of the Volume IC 7712 M62429FP on the AF board.

This is solved by changing resistor 3416 on the Front Board from 2,2kΩ to 680Ω (4822 117 10361).

REMARKS :

02.09 TYPENUMBER(S): SD100 INFORMATION : On special request the MPEG Board has been added to the service

parts list. Pos Codenumber Article description

––—————————————————–————————1001 3141 018 01780 MPEG Board for SD100/00M 1001 3141 018 01890 MPEG Board for SD100/01M

REMARKS :

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Service Newsletter 2000 – Audio Systems 6/6