Philips HTS3548/51/98 Schematic

1 - 1

HTS3548/98/51

©

Copyright 2007 Philips Consumer Electronics B.V. Eindhoven, The Netherlands

All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or
transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise
without the prior permission of Philips.

Published by KC-ET0412 Service Audio Printed in The Netherlands Subject to modification

HC

!1

DVD Hometheater System

Version 1.0

TABLE OF CONTENTS

Page

Location of PC Boards ................................................1-2

Versions Variation & Package .................................... 1-2

Specifications .............................................................. 1-3

Service Aids ................................................................1-4

ESD & Safety Instruction ............................................1-5

Lead-free solding Information ....................................1-6

Repair Instructions ......................................................... 2

Disassembly Instructions & Service positions .............. 3

Block & Wiring Diagram ................................................ 4

Control Board ................................................................. 5

Main Board ..................................................................... 6

Power Board .................................................................. 7

DVD loader....................................................................8

Mechanical Exploded View & Parts...............................9

Service Manual

Service

Tfswjdf

Tfswjdf

LOCATION OF PCB BOARDS

Type/Versions

Features & Board in used

HTS3548

/98

Main (Output Power-1000W)

Composite Video Out

Power Voltage (120/230V)

AC Cord (Detachable)

/51

CONTROL PCB

STANDBY PCB

MAIN PCB

POWER PCB

USB PCB

PHONE JACK PCB

MIC VOL PCB

1 - 2

VERSION VARIATION:

Speci cations (

1 - 3

red colour for/51)

AMPLIFIER

Total output power: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1000W

Frequency Response: ...... ................. 180 Hz – 14 kHz / ±3 dB

Signal-to-Noise Ratio: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . > 60 dB (A-weighted)

Input Sensitivity

- AUX In : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500 mV

- TV In: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250 mV

- MP3 Line-In: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500 mV

* (1% THD 1kHz)

RADIO

Tuning Range: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FM 87.5–108 MHz

................................................................................(50/100kHz)

.......................................................... AM 531–1602 kHz (9kHz)

........................................................ AM 530–1700 kHz (10kHz)

Tuning Range: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FM 87.5–108 MHz

.......................................................................................(50kHz)

......................................................... MW 531–1602 kHz (9kHz)

26 dB Quieting

Sensitivity: ............. ................ ......... . FM 22 dBf, AM 5000μV/m

IF Rejection Ratio: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FM 60 dB, AM 24 dB

Signal-to-Noise Ratio: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FM 50 dB, AM 30 dB

MW Suppression Ratio: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FM 30 dB

Harmonic Distortion: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FM Mono 3%

............................................................................ FM Stereo 3%

........................................................................................AM 5%

Sensitivity: ............. ................ ......... FM 22 dBf, MW 5000μV/m

IF Rejection Ratio: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FM 60 dB, MW 24 dB

Signal-to-Noise Ratio: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FM 50 dB, MW 30 dB

MW Suppression Ratio: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FM 30 dB

Harmonic Distortion: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FM Mono 3%

............................................................................ FM Stereo 3%

.......................................................................................MW 5%

Frequency Response ...... .............. FM 180 Hz–10 kHz / ±6 dB

Stereo Separation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FM 26 dB (1 kHz)

Stereo Threshold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FM 23.5 dB

MAIN UNIT

Power Supply Rating: . . . . . . . . . . . . . . ............ 110-127 V / 220-240 V~

................................................................... 50-60 Hz switchable

Power Consumption: . .. .. .. ... .. .......................................... 180 W

Dimensions: . . . . . . . . . . . . . . ............................... 435 x 55 x 367 (mm)

...................................................................................(w x h x d)

Weight: .... ....... ...............................................................4.04 kg

FRONT AND REAR SPEAKERS

System: . . . . . . . . . . . . . . .......................................... Full range satellite

Impedance: . . . . . . . . . . . . . . ............................................................3 Ω

Speaker drivers: ...... .................................3” full range speaker

Frequency response: . . . . . . . . . . . . . . ........................ 120 Hz – 20 kHz

Dimensions: . . . . . . . . . . . . . . ............................ 95 x 1184 x 73.7 (mm)

...................................................................................(w x h x d)

Weight: .... ....... ......................................................5.99 kg/each

CENTER SPEAKER

System: . . . . . . . . . . . . . . .......................................... Full range satellite

Impedance: . . . . . . . . . . . . . . ............................................................3 Ω

Speaker drivers: ...... ......................... 2 x 2.5” full range woofer,

..............................................................................1 x 2” tweeter

Frequency response: . . . . . . . . . . . . . . ........................ 150 Hz – 20 kHz

Dimensions: . . . . . . . . . . . . . . .............................. 435 x 93.5 x 67 (mm)

...................................................................................(w x h x d)

Weight: .... ....... ................................................................1.26kg

SUBWOOFER

Impedance: . . . . . . . . . . . . . . ............................................................ 3 Ω

Speaker drivers: ...... .................................. 203 mm (8”) woofer

Frequency response: . . . . . . . . . . . . . . .......................... 40 Hz – 150 Hz

Dimensions: . . . . . . . . . . . . . . ....................... 159.5 x 355.5 x 370 (mm)

...................................................................................(w x h x d)

Weight: .... ....... ...............................................................4.78 kg

DISC

Laser Type Semiconductor

Disc Diametre . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12cm / 8cm

Video Decoding . .. . .. .. .. .. .. .. .. . .. .. .. .. .. .. .. . .. .. .. MPEG-1 / MPEG-2 /

.................................................................... / DivX 3/4/5/6, Ultra

Video DAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Bits

Signal System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PAL / NTSC

Video Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4:3 / 16:9

Video S/N .... ....... ....... ....... ....... ....... ....... ....... ....... ....... ..... 56 dB

Composite Video

Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.0 Vp-p, 75Ω

Component Video Output

........................................................................ (Y)1.0 Vp-p, 75Ω

..................................................................... (Pb) 0.7 Vp-p, 75Ω

...................................................................... (Pr) 0.7 Vp-p, 75Ω

Audio DAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Bits / 96 kHz

Frequency Response ...... ................... 4 Hz–20 kHz (44.1 kHz)

................................................................ 4 Hz–22 kHz (48 kHz)

................................................................ 4 Hz–44 kHz (96 kHz)

PCM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IEC 60958

Dolby Digital ...... .................... ............... IEC 60958, IEC 61937

DTS .... ....... ....... ....... ....... ....... ....... ....... . IEC 60958, IEC 61937

Speci cations subject to change without prior
notice.

Service Tools:

Universal Torx driver holder .................................4822 395 91019

Torx bit T10 150mm ...........................................4822 395 50456

Torx driver set T6-T20 .........................................4822 395 50145

Torx driver T10 extended .....................................4822 395 50423

Compact Disc:

SBC426/426A Test disc 5 + 5A ...........................4822 397 30096

SBC442 Audio Burn-in test disc 1kHz .................4822 397 30155

SBC429 Audio Signals disc .................................4822 397 30184

Dolby Pro-logic Test Disc ....................................4822 395 10216

SERVICE AIDS

HANDLING CHIP COMPONENTS

1 - 4

1 - 5

NL

WAARSCHUWING

Alle IC’s en vele andere halfgeleiders zijn
gevoelig voor electrostatische ontladingen
(ESD).
Onzorgvuldig behandelen tijdens reparatie kan
de levensduur drastisch doen verminderen.
Zorg ervoor dat u tijdens reparatie via een
polsband met weerstand verbonden bent met
hetzelfde potentiaal als de massa van het
apparaat.
Houd componenten en hulpmiddelen ook op
ditzelfde potentiaal.

I

AVVERTIMENTO

Tutti IC e parecchi semi-conduttori sono
sensibili alle scariche statiche (ESD).
La loro longevità potrebbe essere fortemente
ridatta in caso di non osservazione della più
grande cauzione alla loro manipolazione.
Durante le riparazioni occorre quindi essere
collegato allo stesso potenziale che quello della
massa dell’apparecchio tramite un braccialetto
a resistenza.
Assicurarsi che i componenti e anche gli utensili
con quali si lavora siano anche a questo
potenziale.

GB

Safety regulations require that the set be restored to its original
condition and that parts which are identical with those specified,
be used.

Safety components are marked by the symbol

!

.

NL

Veiligheidsbepalingen vereisen, dat het apparaat bij reparatie in
zijn oorspronkelijke toestand wordt teruggebracht en dat onderdelen,
identiek aan de gespecificeerde, worden toegepast.

De Veiligheidsonderdelen zijn aangeduid met het symbol

!

.

F

Les normes de sécurité exigent que l’appareil soit remis à l’état
d’origine et que soient utiliséés les piéces de rechange identiques
à celles spécifiées.

Less composants de sécurité sont marqués

!

.

D

Bei jeder Reparatur sind die geltenden Sicherheitsvorschriften zu
beachten. Der Original zustand des Geräts darf nicht verändert werden;
für Reparaturen sind Original-Ersatzteile zu verwenden.

Sicherheitsbauteile sind durch das Symbol

!

markiert.

I

Le norme di sicurezza esigono che l’apparecchio venga rimesso
nelle condizioni originali e che siano utilizzati i pezzi di ricambio
identici a quelli specificati.

Componenty di sicurezza sono marcati con

!

.

GB

After servicing and before returning set to customer perform a leakage
current measurement test from all exposed metal parts to earth ground
to assure no shock hazard exist, The leakage current must not
exceed 0.5mA.

CLASS 1

LASER PRODUCT

3122 110 03420

GB

Warning !

Invisible laser radiation when open.
Avoid direct exposure to beam.

S

Varning !

Osynlig laserstrålning när apparaten är öppnad och spärren
är urkopplad. Betrakta ej strålen.

SF

Varoitus !

Avatussa laitteessa ja suojalukituksen ohitettaessa olet alttiina
näkymättömälle laserisäteilylle. Älä katso säteeseen!

GB

WARNING

All ICs and many other semi-conductors are
susceptible to electrostatic discharges (ESD).
Careless handling during repair can reduce life
drastically.
When repairing, make sure that you are
connected with the same potential as the mass
of the set via a wrist wrap with resistance.
Keep components and tools also at this
potential.

F

ATTENTION

Tous les IC et beaucoup d’autres
semi-conducteurs sont sensibles aux
décharges statiques (ESD).
Leur longévité pourrait être considérablement
écourtée par le fait qu’aucune précaution n’est
prise à leur manipulation.
Lors de réparations, s’assurer de bien être relié
au même potentiel que la masse de l’appareil et
enfiler le bracelet serti d’une résistance de
sécurité.
Veiller à ce que les composants ainsi que les
outils que l’on utilise soient également à ce
potentiel.

ESD

D

WARNUNG

Alle ICs und viele andere Halbleiter sind
empfindlich gegenüber elektrostatischen
Entladungen (ESD).
Unsorgfältige Behandlung im Reparaturfall kan
die Lebensdauer drastisch reduzieren.
Veranlassen Sie, dass Sie im Reparaturfall über
ein Pulsarmband mit Widerstand verbunden
sind mit dem gleichen Potential wie die Masse
des Gerätes.
Bauteile und Hilfsmittel auch auf dieses gleiche
Potential halten.

DK

Advarse !

Usynlig laserstråling ved åbning når sikkerhedsafbrydere er
ude af funktion. Undgå udsaettelse for stråling.

F

"Pour votre sécurité, ces documents doivent être utilisés par
des spécialistes agréés, seuls habilités à réparer votre
appareil en panne".

GB

ESD PROTECTION EQUIPMENT

Complete Kit ESD3 (small tablemat, wristband,

connection box, estention cable and earth cable ....... 4822 310 10671

Wristband tester ................................................................. 4822 344 13999

1 - 6

Pb(Lead) Free Solder

When soldering , be sure to use the pb free solder.

INDENTIFICATION:

Regardless of special logo (not always indicated)

one must treat all sets from 1 Jan 2005onwards, according
next rules:

Important note: In fact also products of year 2004 must
be treated in this way as long as you avoid mixing solder­alloys (leaded/ lead-free). So best to always use SAC305
and the higher temperatures belong to this.

Due to lead-free technology some rules have to be
respected by the workshop during a repair:

• Use only lead-free solder alloy Philips SAC305 with

order code 0622 149 00106. If lead-free solder-paste
is required, please contact the manufacturer of your
solder-equipment. In general use of solder-paste
within workshops should be avoided because paste is
not easy to store and to handle.

• Use only adequate solder tools applicable for lead-

free solder alloy. The solder tool must be able
– To reach at least a solder-temperature of 400?C,
– To stabilize the adjusted temperature at the solder-

tip

– To exchange solder-tips for different applications.

• Adjust your solder tool so that a temperature around

360?C – 380?C is reached and stabilized at the solder
joint. Heating-time of the solder-joint should not exceed
~ 4 sec. Avoid temperatures above 400?C otherwise
wear-out of tips will rise drastically and flux-fluid will
be destroyed. To avoid wear-out of tips switch off un­used equipment, or reduce heat.

• Mix of lead-free solder alloy / parts with leaded solder

alloy / parts is possible but PHILIPS recommends
strongly to avoid mixed solder alloy types (leaded and
lead-free).
If one cannot avoid or does not know whether product
is lead-free, clean carefully the solder-joint from old
solder alloy and re-solder with new solder alloy
(SAC305).

• Use only original spare-parts listed in the Service-

Manuals. Not listed standard-material (commodities)
has to be purchased at external companies.

• Special information for BGA-ICs:
– Always use the 12nc-recognizable soldering

temperature profile of the specific BGA (for de­soldering always use the lead-free temperature profile,
in case of doubt)

– Lead free BGA-ICs will be delivered in so-called ‘dry-

packaging’ (sealed pack including a silica gel pack) to
protect the IC against moisture. After opening,

dependent of MSL-level seen on indicator-label in the
bag, the BGA-IC possibly still has to be baked dry.
(MSL=Moisture Sensitivity Level). This will be
communicated via AYS-website.
Do not re-use BGAs at all.

• For sets produced before 1.1.2005 (except products

of 2004), containing leaded solder-alloy and
components, all needed spare-parts will be available
till the end of the service-period. For repair of such
sets nothing changes.

• On our website www.atyourservice.ce.Philips.com

you find more information to:

• BGA-de-/soldering (+ baking instructions)

• Heating-profiles of BGAs and other ICs used in
Philips-sets

You will find this and more technical information
within the “magazine”, chapter “workshop news”.

For additional questions please contact your local
repair-helpdesk.

2 - 1 2 - 1

REPAIR INSTRUCTION (Part One)

MA IN UNIT REPAIR CHART 1/ 3

A

All function

No working

Check all system

all cable is loose

or bad INT

Panel stanby LED
show working or Not

Re-insert and fix

the cable

Check back power

PC

B

F901 bad cause damage

Change F901

Check CN905 2pin

BK5V if right

Check repair control
PCB Standby circui t

Check +5V power

supply circuit

Check RB901 1pin

+5V=5V

Check repair switch

power circuit ( See B)

Check all Voltage

3.3V and 1.8V
give circuit

VCC=5V

VD33=3.3V

VD18=1.8V

Check IC208 Pin234 OSC

frequency 27MHz

Repair main pcb between

IC202 IC206 IC208and IC602

circuit

YES

NO

NO

BAD

NO

OK

YES

WORK

NO

CHECK

CORRECT

YES

YES

B

Power Supply

No working

All Voltage

No Output

Check F 901

Bad Cause Damage

Check BK5V +5V

Working or Not

No

YES

No

+35.5V Voltage

No Output

Check Repair IC901 IC902

And Its conn circuit

-27V Voltage
No Output

+12V Voltage

No Output

+5V Voltage

No Output

Check Q901 Q909 IC901

And Its Conjoint Part

Check Q912 IC902

And Its Conjoint Part

Check Q912 IC902

And Its Conjoint Part

Check Q912 IC902

And Its Conjoint Part

No

C

All Function

No Sound

Check POWER IC

Voltage +35.5V

Yes

See Contents B

CheckQ306 D304 ZD303

And Its conn part s

Yes

No

Check Q305 C

Voltage 3.3V

OK

No

BK5V Voltage

No Output

Check Q912 IC902

And Its Conjoint Part

CheckQ501 Q502 IC505

And Its conn part s

OK

LOW

CheckQ902 ZD905 IC505

And Its conn part s

Check Q902 C

Voltage 3.3V

OK

No

Check IC505 51PIN

HIGH(3.3V) OR LOW(0V)

Check IC501 IC502 IC503 IC504

And Its Conjoint Part

A

A ll F unctio n

No Wo rkin g

B

Po wer Su

pply

No Wo rkin g

C

A ll F unctio n

No So und

E

A udi o line IN

No Ou tput

G

DVD A udi o

No So und

H

MP 3 In

No So und

I

CO AX IA L In

No So und

L

T uner No So und

M

No Sv ideo Output

O

HD MI No Ou tput

P

No CVBS Ou tput

Q

No Y Pr Pb ou tput

MA IN UNIT REPAIR CHART 2/3

G

DVD Audio

No Sound

Check CN801 to

DVD loader Cable Loose

No

OK

Check Open/Close

Working or Not

Check CN802 CN803

Check IC801

And Its conjoint parts

No

Re-Insert and fix

the cable

YES

Determine Picture Output

OK

Check IC208 And

Their Conjoint Parts

No

Check Q801 Q802 Q803

OK

to DVD Loader Cable loose

or Bad INT

or Bad INT

Yes

Yes or No

Q804 And Their Conjoint Parts

I

COAXIAL In

No Sound

INT

OK

Check JK702 Pin5

INT OR NO

REPAIR ok

Check And Repair

FB202 FB203

No

Check IC201 IC208 And

OK

Check IC201 Pin6 pin 23

approx +5.0V

Its Conjoint Part s

Yes or No

E

AUX/TV IN

No Output

Check JK302

Check IC304 IC305 Pin7

INT or No

approx -5.6V Pin16 approx +5.6V

Check ZD301ZD302

Check FB307 FB308

Change this JK

Check IC306

And Its Conjoint parts

OK

No

OK

Check IC306 Pin1 Pin3 6 13

Voltage Correct is 5.0V

Yes

INT

No

See C

OK

Yes or No

FB309 Q904

H

Check JK302

Check IC304 IC305 Pin7

INT or No

approx -5.6V Pin16 approx +5.6V

Check ZD301ZD302

Check FB307 FB308

Change this JK

Check IC306

And Its Conjoint parts

OK

No

OK

Check IC306 Pin1 Pin3 6 13

Voltage Correct is 5.0V

Yes

INT

No

See C

OK

Yes or No

FB309 Q904

REPAIR INSTRUCTION (Part Two)

2 - 2 2 - 2

REPAIR INSTRUCTION (Part Three)

MA IN UNIT REPAIR CHART 3/3

L

Tuner No Sound

Output

Check CN301 Pin9= +9V

Check CN301 Q901ZD904

No

And Its Conjoint Parts

Check SW Power

See B

Yes

Check CN1 to CN301

Cable Loose or IN T

Check CN1 Pin2/Clock

Pin3/Data,Pin4/CE

Affirm Correct

Yes

No

Check IC102 IC108

And Its Conjoint Part s

No

Check IC1 And

No

Its Conjoint Parts

Check VT Valtage

No

Low Freq=0.8--1.8V

Hi Freq=8.0 --9.0V

Check IC1 OSC Input

Pin5---AM OSC

VT No Change

Pin3---FM OSC

Repair FM osc Section

And Its Conjoint Part s

No AMNo FM

L6 or DT4

Repair AM osc Section

And Its Conjoint Part s

L12 or DT5

Check Repair CN302 IC301

And Its Conjoint Part s

Check CN1 L12 CF3

And Its Conjoint Parts

OK

Check CN302 IC301

And Its Conjoint Parts

Check CF2 And

Its Conjoint Parts

L6 DT4

And Its Conjoint Part s

AM Function No Sound

FM Function No Sound

OK

OK

OK

OK

Check IC1 X1 C39

And Its Conjount Parts

OK

Check Main Pcb Of Tuner Input Circuit

M

No Svideo output

Check JK701 Pin1 Pin3

Video signal

Yes

Check IC208 PIN133 PIN140

To JK701 Conjoint Parts

O

HDMI No Output

Yes

Insert And Pull out HDMI

cable

See C

OK

CheckQ610 Q611 Q609

And Conjoint Parts

No

Check IC602 3.3V And 1.8V

Check Q203 Q204

And Conjoint Parts

No

OK

Check C300

CheckC300

And Conjoint Parts

No

OK

Check IC602 PIN72:ASPDIF

Check IC602 IC208

And Conjoint Part s

No

PIN77:ALCK

p

No CVBS output

Check JK701 Pin5

Video signal

Yes

Check IC208 PIN134

To JK701 Conjoint Parts

Q

No Y Pr Pb output

Check JK702 Pin12 Pin4

Pin5 Video signal

Yes

Check IC208 PIN137 PIN138

pin139 To JK702 Conjoint Parts

2 - 3 2 - 3

3 - 1 3 - 1

DISASSEMBLY INSTRUCTIONS

Dismantling of the Front Panel Assembly

1) Open the DVD Tray by using the Open/Close Button
while the Set is ON and disconnect the mains supply after
removing the Tray Cover.

Note: If this is not possible, the DVD Tray

has to be open manually.

Take a mini screw driver about 2mm diameter and make a

marking 24mm from the tip as shown in  gure 2 . Place the
set on its side, insert the mini screw driver till the marking
and slide it towards the right as shown in  gure 1 until the
Tray moves out of the Front Panel.

2) Return the set to its upright position and remove the Tray
Cover as shown in Figure 3 and close the tray manually by
pushing it back in.

3) Loosen 5 screws and remove the Top Cover by lifting the
rear portion upwards before sliding it out towards the rear.

- 3 screws on the back

- 1 screws each on the left & right side

4) Loosen 5 screws & lift up the top edge of Front Panel
assembly to free some catches before sliding it out towards
the front.

- 3 screws on the bottom

- 1 screw each on the left & right side

24mm

mm2

Figure 3

Figure 2

Dismantling of the Main PCB

2) Loosen 3 screw “ A “ on the top of main board as shown in
 g ure 4.

1) Loosen 6 screw “B” at the back panel as shown in  gure 5.

A

Figure 4

Figure 5

PULL

Figure 1

B