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MCD139/37/79/HTM139/55/78MCD139B/37/12/05/58/79/55/98/MME239/37
Copyright 2008 Philips Consumer Electronics B.V. Eindhoven, The NetherlandsAll 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 SL 0830 Service Audio Printed in The Netherlands Subject to modification
DVD Micro Theatre
Version 1.8
CLASS 1LASER PRODUCT
3141 785 31118
TABLE OF CONTENTSPage
Location of PC Boards & Versions Variation ........................1-23-1.......................................................................snoitac ificepS
Measurement Setup .............................................................1-4Service Aids, Safety Instruction, etc .....................................1-5
Connections & Functional Overview.........................1-9 to 1-12Troubleshooting ......................................................1-13 to 1-14Repair Instructions................................................................... 2Disassembly Instructions & Service positions ......................... 3Set Block Diagram ................................................................4-1Set Wiring Diagram ..............................................................4-2Key & VFD Board .................................................................... 5Main Board .............................................................................. 6
7........................................................................draoBre ifilpmAPower Board ............................................................................ 8Tuner Board ............................................................................. 9Mechanical Exploded View & Parts List ................................ 10Revision List .......................................................................... 11
VIDEO CD
CD Playability Check ...................................................1-6 to 1-8
1 - 2
TUNER
KEY PCB
CONTROL PCB
MAIN PCB
AMP PCB
POWER PCB
Left speaker
LOCATION OF PCBS
niRDC/nixuASCART OutS-Video OutSubwoofer OutDIN Out
Voltage SelectorECO Power Standby (LCD Display Off)USB Direct
Type /Versions:
Featuresin used:
VERSION VARIATIONSType /Versions:
Board in used:
MCD139 & MCD139B & HTM139
Service policy
MAIN BOARDPOWER BOARDAMP BOARD
CONTROL BOARD
* TIPS : C -- Component Lever Repair.M -- Module Lever Repair
-- Used
C
/05 /12 55/ /79/58
Feature diffrence
KEY BOARDCCC
TUNER BOARD M
x
x
C
/37 /98/78
C
CCCM
CMMMMMM
M
M
C
CCCM
CC
CCM
C
CCCM
C
CC
x
/05 /12 55/ /79/58/37 /98/78
x
x
x
x
x
xx
x
x
x
x
xx
x
x
x
xx
x
x
x
xx
x
x
x
xx
x
x
x
xx
x
xComponent Video Outx x x x x
MCD139 & MCD139B & HTM139
DVD MODULE MM M MMM MLEFT SPEAKER BOX CC M MCM C
C
M
CC
MM
1 - 3
HE:6@:GHHnhiZb ################################################### &"lVn!7VhhgZ[aZm>beZYVcXZ ######################################################################## - HeZV`ZgYg^kZgh ############################################## ([jaagVc\Z;gZfjZcXngZhedchZ ######################## -%=o'%`=o9^bZch^dchl]Y ######################################################################################################## &'*'*%'('bbLZ^\]i ################################################# '#*`\$aZ[iheZV`Zg############################################################## .`\$g^\]iheZV`Zg
HJ7LDD;:G>beZYVcXZ########################################################################+HeZV`ZgYg^kZg ###################################### *#'*hjWldd[Zg;gZfjZcXngZhedchZ#############################+%=O"""&@=O9^bZch^dchlm]mY##########################################################################################################&),m'*%m'('bbLZ^\]i###########################################################################'#*`\
Specifications and external appearance aresubject to change without notice.
6BEA>;>:GH:8I>DCIdiVadjiejiedlZg;I8 ###################################### +%LBV^cheZV`ZghA$G ####################### '%Lm'GBHHjWldd[Zg ################################################## '%LGBHDjiejgiedlZgA$GheZV`Zgh ################################# '*L$X]VccZaGBHHjWldd[Zg ######################################################### *%LGBHHeZV`ZgX]VccZa;gZfjZcXnGZhedchZ ########################################################################################################## &-%=o"&+`=o$ (Y7H^\cVa"id"Cd^hZGVi^d ########## 3+%Y76"lZ^\]iZY>cejiHZch^i^k^in6JM>c ################################################################ *%%bK
DjiejiHZch^i^k^inA^cZDji&@=O%Y7 ############################### ' %#'K
CdiZh/
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HjWldd[Zg /'%L;I8l^i]+d]b&%%=OI=92$1&
IJC:GH:8I>DCIjc^c\GVc\Z #################################################################################################### ;B-,#*&%-B=o*%`=ohiZehH^\cVa"id"Cd^hZGVi^d ################################ ;B>*%Y7
9K9H:8I>DCAVhZgIneZ ################################################ HZb^XdcYjXidg9^hX9^VbZiZg ############################################## &'Xb$-XbK^YZd9ZXdY^c\ ########################### BE:CJC>IEdlZgHjeeanGVi^c\ ################################&'%K+%=O$(,#############&&%K"&',K+%=O$''%K"')%K*%=O$**$,-$.-############################################################''%K"')%K*%=O$,.EdlZg8dchjbei^dc6Xi^kZ ######################################################################## (%LHiVcYWn #################################################################### 1&L$(,
9^bZch^dchl]Y ### '&-.%'''bbLZ^\]i ############################################################################ )`\EVX`V\^c\9^bZch^dchl]Y ################################################################################### **%m(&)m((%bb
1-4
LF Generator e.g. PM5110
RecorderUse Universal Test Cassette CrO2 SBC419 4822 397 30069
LEVEL METERe.g. Sennheiser UPM550
with FF-filter
S/N and distortion metere.g. Sound Technology ST1700B
L
R
DUT
or Universal Test Cassette Fe SBC420 4822 397 30071
LEVEL METERe.g. Sennheiser UPM550
with FF-filter
S/N and distortion metere.g. Sound Technology ST1700B
L
R
DUT
CDUse Audio Signal Disc(replaces test disc 3)
SBC429 4822 397 30184
Bandpass250Hz-15kHz
e.g. 7122 707 48001LF Voltmeter
e.g. PM2534DUT
RF Generator e.g. PM5326
S/N and distortion meter e.g. Sound Technology ST1700B
Use a bandpass filter to eliminate hum (50Hz, 100Hz) and disturbance from the pilottone (19kHz, 38kHz).
Ri=
50
Tuner FM
MEASUREMENT SETUP
1-5
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
GB WARNINGAll ICs and many other semi-conductors aresusceptible to electrostatic discharges (ESD).Careless handling during repair can reduce lifedrastically.When repairing, make sure that you areconnected with the same potential as the massof the set via a wrist wrap with resistance.Keep components and tools also at thispotential.
ESD
CLASS 1LASER PRODUCT
GBSafety regulations require that the set be restored to its originalcondition and that parts which are identical with those specified,be usedSafety components are marked by the symbol ! .
Lead free
Set remains closed!
Standard repair procedure
N
Y
Play a CD for at least 10 minutes
Y
playabilityok ?
Nplayabilityok ?
add Info for customer"SET OK"
playabilityok ?
Y
N
check playability
N
Y
playabilityok ?
check playability
check playability
EYE-Patternok ?
N
Y
check "EYE-Pattern"
replace CD Drive
Laser currentok ?
N
Y
check Laser current
CD Drive offsetsok ?
NY
check CD Drive offsets
clean the lens
check playability
return set
Customer complaint"CD related problem"
return set
return set
replace CD Drive
return set
replace CD Drive
return set
replace Signal Processor
return set
"fast" lens cleaning
1
2
3
4
5
6
7
For flap loaders (= access to CD drive possible) cleaning method 4 is recommended
1 - 7 For description - see following pages
INSTRUCTIONS ON CD PLAYABILITY
1-6
1PLAYABILITY CHECK
For sets which are compatible with CD-RW discsuse CD-RW Printed Audio Disc ....................7104 099 96611
TR 3 (Fingerprint)TR 8 (600 Black dot) maximum at 01:00
playback of these two tracks without audible disturbanceplaying time for: Fingerprint 10seconds
Black dot from 00:50 to 01:10 jump forward/backward (search) within a reasonable time
For all other sets use CD-DA SBC 444A..................................4822 397 30245
TR 14 (600 Black dot) maximum at 01:15TR 19 (Fingerprint)TR 10 (1000 wedge)
playback of all these tracks without audible disturbanceplaying time for: 1000 wedge 10seconds
Fingerprint 10secondsBlack dot from 01:05 to 01:25
jump forward/backward (search) within a reasonable time
2CUSTOMER INFORMATION
It is proposed to add an addendum sheet to the set whichinforms the customer that the set has been checkedcarefully - but no fault was found.The problem was obviously caused by a scratched, dirty orcopy-protected CD. In case problems remain, the customeris requested to contact the workshop directly. The lens cleaning (method 3) should be mentioned in theaddendum sheet.
The final wording in national language as well as the printingis under responsibility of the Regional Service Organizations.
3FAST LENS CLEANING (dry brush)
Use lens cleaning CDSBC AC300 ...........................................9082 100 00043
Insert the lens cleaning CD, press PLAY and follow thevoice guides instructions on the CD.
4LIQUID LENS CLEANING
Because the material of the lens is synthetic and coatedwith a special anti-reflectivity layer, cleaning must be donewith a non-aggressive cleaning fluid. It is advised to useCleaning Solvent B4-No2, available with codenumber4822 389 10026.
The actuator is a very precise mechanical component andmay not be damaged in order to guarantee its full function.Clean the lens gently (dont press too hard) with a soft andclean cotton bud moistened with the special lens cleaner.
The direction of cleaning must be in the way as indicated inthe picture below.
Before touching the lens it is advised to clean thesurface of the lens by blowing clean air over it.This to avoid that little particles make scratches onthe lens.
INSTRUCTIONS ON CD PLAYABILITY
1-7
5EYE-PATTERN SIGNAL JITTER MEASUREMENT
Measure the signal on the input of the Signal processorusing an analog oscilloscope. Please find the exactmeasuring point in your Service Manual.
See below examples of the signal. Amplitude should read atleast 700mVpp using SBC444A.
good
badIf the oscilloscope shows a signal like the bad one, and/orthe amplitude decreases within 1 minute - the CD drive hasto be replaced.
6CD DRIVE LASER CURRENT MEASUREMENT
The laser current can be measured as a voltage drop on aresistor. The resistor is marked in every Service Manual.The value depends on the type of CD drive.
typical value most probably defectVAMxxxx : 150-230mV 350mVMCDxx : 170-230mV 300mVDA1x : 210-250mV 350mVDA2x : 175-200mV 250mVUse SBC444A (CD-DA) for measurement.
7CD DRIVE OFFSET MEASUREMENT
The photodiodes of the CD-drive may have an offset. Theseoffsets have to be compensated by the signal processor.High offsets can lead to poor playability of some CDs(skipping tracks).
To measure the offset values, start the Service TestProgram - section Focus Test without a CD.
The offsets can be measured with a DC Millivoltmeterdirectly on the connector (see drawing below). Pinnumbering varies from drive to drive.
The values from diode A-D should read 010mV.Diodes E and F are less critical.
If one of the offsets is higher than 10mV the CD drive hasto be replaced. Otherwise replace the Signal Processor.
Sanyo DA12T3CD Drive
AA
F
C
B
E
C
D
E
VCC
B
VREF
F
D
9
10
11
12
13
14
15
161800
+5V_HF
VrefCD10
A
D
E
B
C
FGND 8
E
D
A
B
C
F
Laser power control
100n
2878
470n
2876
3821 1R
1K
3823
2880
33p
+5V
BC807-407879
3817
47R
3820
4R7
47R
3819
1n2879
2877
47u
1
8
4
7811-ALM358D
3
2
10K
3822
47R
3818
2841
100n
47n
2869
+5V_HF
LASER DIODE
U >250mV->Laser damaged !
4,6V
3V3,3V
3,9V
2V
0,17V
0,17V
SanyoDA12T3
HF-Amplifier
D3
D2
D1
Drive detection
680R
3905
3903
3K3
BC847B7877
47n
2818
1K5
3902
5
7
4
2
1
6
3
64
8
9
10
11
470R
3893
+3.3V
2K2
3908
10K
3923BC847B7878
BC847B7876
4n7
2813
3896
100R
220u
2885
2881
560p
47n
2887
560R
3901
2883
470n
2817
4u7
3n3
2814
3898
220R
3895
27K
470n
2884
+3.3V
3909
820R
3907
100R
3920
33K
3897
2882
82p
3K3
3904
2K7
38993906
470R
+5V_HF
HFIN
VrefCD10
100p
2815
2816
22n
LDONto 3826,3827
VREF GE
VDDA1
VRIN
VSSA1
ISLICE
LDON
D1
D2
D3
D4
HFIN
HFREF
IREF
CD_DA: 0V / CD_RW: 3V
(A-D)
800mVpp
TB = 0.5s/div
EYE-PATTERN
1,8V
1,2V
2,4V
2,6V0,65V
INSTRUCTIONS ON CD PLAYABILITY
1-8
1 - 9
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