Philips MCD139 User manual

MCD139/37/79/HTM139/55/78
MCD139B/37/12/05/58/79/55/98/MME239/37
©Copyright 2008 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 SL 0830 Service Audio Printed in The Netherlands Subject to modification
DVD Micro Theatre
Version 1.8
CLASS 1
LASER PRODUCT
©3141 785 31118
TABLE OF CONTENTS Page
Location of PC Boards & Versions Variation ........................1-2
3-1.......................................................................snoitacificepS
Measurement Setup.............................................................1-4
Service Aids, Safety Instruction, etc.....................................1-5
Connections & Functional Overview.........................1-9 to 1-12
Troubleshooting......................................................1-13 to 1-14
Repair Instructions...................................................................2
Disassembly Instructions & Service positions.........................3
Set Block Diagram................................................................4-1
Set Wiring Diagram ..............................................................4-2
Key & VFD Board....................................................................5
Main Board..............................................................................6
7........................................................................draoBreifilpmA
Power Board
............................................................................8
Tuner Board.............................................................................9
Mechanical Exploded View & Parts List................................10
Revision 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/nixuA
SCART Out
S-Video Out
Subwoofer Out
DIN Out
Voltage Selector
ECO Power Standby (LCD Display Off)
USB Direct
Type /Versions:
Features
in used:
VERSION VARIATIONS
Type /Versions:
Board in used:
MCD139 & MCD139B & HTM139
Service policy
MAIN BOARD
POWER BOARD
AMP BOARD
CONTROL BOARD
* TIPS : C -- Component Lever Repair.
M -- Module Lever Repair
-- Used
C
/05 /12 55/ /79/58
Feature diffrence
KEY BOARD C
C
C
TUNER BOARD M
x
x
C
/37 /98/78
C
C
C
C
M
CM M
M
M
M
M
M
M
C
C
C
C
M
C
C
C
C
M
C
C
C
C
M
C
C
C
x
/05 /12 55/ /79/58/37 /98/78
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
Component Video Out xxx xx
MCD139 & MCD139B & HTM139
DVD MODULE MMM MMMM
LEFT SPEAKER BOX CCM MCMC
C
M
C
C
M
M

1 - 3
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SPECIFICATIONS

1-4
LF Generator
e.g. PM5110
Recorder
Use Universal Test Cassette CrO2 SBC419 4822 397 30069
LEVEL METER
e.g. Sennheiser UPM550
with FF-filter
S/N and distortion meter
e.g. Sound Technology ST1700B
L
R
DUT
or Universal Test Cassette Fe SBC420 4822 397 30071
LEVEL METER
e.g. Sennheiser UPM550
with FF-filter
S/N and distortion meter
e.g. Sound Technology ST1700B
L
R
DUT
CD
Use Audio Signal Disc
(replaces test disc 3) SBC429 4822 397 30184
Bandpass
250Hz-15kHz
e.g. 7122 707 48001
LF Voltmeter
e.g. PM2534
DUT
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=50Ω
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 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.
ESD
CLASS 1
LASER PRODUCT
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 !.
Lead free

Set remains closed!
Standard repair procedure
N
Y
Play a CD
for at least 10 minutes
Y
playability
ok ?
N
playability
ok ?
add Info for customer
"SET OK"
playability
ok ?
Y
N
check playability
N
Y
playability
ok ?
check playability
check playability
EYE-Pattern
ok ?
N
Y
check "EYE-Pattern"
replace CD Drive
Laser current
ok ?
N
Y
check Laser current
CD Drive offsets
ok ?
N
Y
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 4is recommended
1- 7For description - see following pages
INSTRUCTIONS ON CD PLAYABILITY
1-6

1
PLAYABILITY CHECK
For sets which are compatible with CD-RW discs
use CD-RW Printed Audio Disc....................7104 099 96611
TR 3 (Fingerprint)
TR 8 (600µ Black dot) maximum at 01:00
• playback of these two tracks without audible disturbance
playing 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 (600µ Black dot) maximum at 01:15
TR 19 (Fingerprint)
TR 10 (1000µ wedge)
• playback of all these tracks without audible disturbance
playing time for: 1000µ wedge ≥10seconds
Fingerprint ≥10seconds
Black dot from 01:05 to 01:25
• jump forward/backward (search) within a reasonable time
2
CUSTOMER INFORMATION
It is proposed to add an addendum sheet to the set which
informs the customer that the set has been checked
carefully - but no fault was found.
The problem was obviously caused by a scratched, dirty or
copy-protected CD. In case problems remain, the customer
is requested to contact the workshop directly.
The lens cleaning (method 3) should be mentioned in the
addendum sheet.
The final wording in national language as well as the printing
is under responsibility of the Regional Service Organizations.
3
FAST LENS CLEANING (dry brush)
Use lens cleaning CD
SBC AC300...........................................9082 100 00043
Insert the lens cleaning CD, press PLAY and follow the
voice guide´s instructions on the CD.
4
LIQUID LENS CLEANING
Because the material of the lens is synthetic and coated
with a special anti-reflectivity layer, cleaning must be done
with a non-aggressive cleaning fluid. It is advised to use
“Cleaning Solvent B4-No2”, available with codenumber
4822 389 10026.
The actuator is a very precise mechanical component and
may not be damaged in order to guarantee its full function.
Clean the lens gently (don’t press too hard) with a soft and
clean cotton bud moistened with the special lens cleaner.
The direction of cleaning must be in the way as indicated in
the picture below.
Before touching the lens it is advised to clean the
surface of the lens by blowing clean air over it.
This to avoid that little particles make scratches on
the lens.
INSTRUCTIONS ON CD PLAYABILITY
1-7

5
EYE-PATTERN SIGNAL – JITTER MEASUREMENT
Measure the signal on the input of the Signal processor
using an analog oscilloscope. Please find the exact
measuring point in your Service Manual.
See below examples of the signal. Amplitude should read at
least 700mVpp using SBC444A.
good
bad
If the oscilloscope shows a signal like the ‘bad’ one, and/or
the amplitude decreases within 1 minute - the CD drive has
to be replaced.
6
CD DRIVE – LASER CURRENT MEASUREMENT
The laser current can be measured as a voltage drop on a
resistor. The resistor is marked in every Service Manual.
The value depends on the type of CD drive.
typical value most probably defect
VAMxxxx : 150-230mV ≥350mV
MCDxx : 170-230mV ≥300mV
DA1x : 210-250mV ≥350mV
DA2x : 175-200mV ≥250mV
Use SBC444A (CD-DA) for measurement.
7
CD DRIVE – OFFSET MEASUREMENT
The photodiodes of the CD-drive may have an offset. These
offsets 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 Test
Program - section “Focus Test” without a CD.
The offsets can be measured with a DC Millivoltmeter
directly on the connector (see drawing below). Pin
numbering varies from drive to drive.
The values from diode A-D should read 0±10mV.
Diodes E and F are less critical.
If one of the offsets is higher than ±10mV the CD drive has
to be replaced. Otherwise replace the Signal Processor.
Sanyo DA12T3
CD Drive
A
A
F
C
B
E
C
D
E
VCC
B
VREF
F
D
9
10
11
12
13
14
15
16
1800
+5V_HF
VrefCD10
A
D
E
B
C
F
GND 8
E
D
A
B
C
F
Laser power control
100n 2878
470n 2876
3821
1R
1K
3823
2880
33p
+5V
BC807-40
7879
3817
47R
3820
4R7
47R
3819
1n
2879
2877
47u
1
8
4
7811-A
LM358D 3
2
10K
3822
47R
3818
2841 100n
47n
2869
+5V_HF
LASER DIODE
U >250mV
->Laser damaged !
4,6V
3V
3,3V
3,9V
2V
0,17V
0,17V
Sanyo
DA12T3
HF-Amplifier
D3
D2
D1
Drive detection
680R
3905
3903
3K3
BC847B
7877
47n
2818
1K5
3902
5
7
4
2
1
6
3
64
8
9
10
11
470R
3893
+3.3V
2K2
3908
10K
3923
BC847B
7878
BC847B
7876 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
3899
3906
470R
+5V_HF
HFIN
VrefCD10
100p
28152816
22n
LDON
to 3826,3827
VREF GE
VDDA1
VRIN
VSSA1
ISLICE
LDON
D1
D2
D3
D4
HFIN
HFREF
IREF
CD_DA: 0V / CD_RW: 3V
Σ(A-D)
800mVpp
TB = 0.5µs/div
EYE-PATTERN
1,8V
1,2V
2,4V
2,6V
0,65V
INSTRUCTIONS ON CD PLAYABILITY
1-8

1 - 9
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CONNECTIONS

1 - 10
8dccZXt^dch
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CONNECTIONS

1 - 11
8dccZXt^dch
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CONNECTIONS

1 - 12
;jcXt^dcVaDkZgk^Zl
GZbdiZXdcigda
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¶ ;dgK89$89dcan/hZaZXihideaVnWVX`^cgVcYdb
dgYZg;dgK89l^i]E78[ZVijgZ!E78bjhiWZ ijgcZYd[[#
6D@
¶ Xdc[^gbhVhZaZXi^dc#
4 $3 $5$6
¶ hZaZXihVc^iZb^cVbZcj# ¶ bdkZhVcZcaVg\ZYe^XijgZje$Ydlc$aZ[i$g^\]i#
5$6 9^hX################[VhihZVgX]ZhWVX`lVgY$[dglVgY^c
VY^hXViY^[[ZgZciheZZYh#
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76J9>D
[dgK89
¶ hZihAZ[ikdXVa!G^\]ikdXVa!BdcdaZ[i!Bdcdg^\]i
dgHiZgZdhdjcYbdYZ#
[dg9K9
¶ hZaZXihVcVjY^daVc\jV\Z#
8ÉÅ
¶ hiVgihdg^ciZggjeihY^hXeaVnWVX`#
9¡$™
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i^iaZ$igVX`
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¶ ;dg?E:</hZaZXihY^[[ZgZcioddb^c\gViZh
09
¶ hidehY^hXeaVnWVX`dgZgVhZhVegd\gVb#
!CjbZg^X@ZneVY%".
¶ ^cejihVigVX`$i^iaZ$X]VeiZgcjbWZgd[i]ZY^hX#
@EGD<
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#9>HEA6NDH9
¶ Y^heaVnhY^hXeaVnWVX`i^bZYjg^c\eaVnWVX`
$8AD8@
¶ hZihVcYk^Zlhi]ZXadX`
%HA::E$I>B:G
¶ VXi^kViZh$YZVXi^kViZhdghZaZXihi]ZhaZZei^bZg ¶ VXi^kViZh$YZVXi^kViZhdghZihi]ZlV`Z"jei^bZg
^9>H8B:CJ
¶ 9K9$K89/ZciZghdgZm^ihi]ZY^hXXdciZcih
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¶ BE($LB6$?E:</hl^iX]Zhdcdgd[[i]ZVaWjb$
e^XijgZbZcj#
1 4 7
2 5 8 0
3 6 9
PROG
ETUMOIDUA
GOTO
VOL
+
ZOOM
DSC
DBB
OK
SYSTEM MENU
MODE CLOCKA-B SLEEP/TIMER
DISPLAY
OSD
DISC MENU
DISC AUX TUNER
SUBTITLE
1
% # ^ & * ( ) ¡ ™ £
3
2
4 6 7 9 ! @ 0 8 5
$
;jcXt^dcVaDkZgk^Zl
&BJI: ¶ Y^hVWaZhdgZcVWaZhhdjcYdjieji# *KDA $" ¶ VY_jhihi]ZkdajbZjelVgY$YdlclVgY# (<DID ¶ [VhihZVgX]Zh^cVY^hXWnZciZg^c\Vi^bZ!i^iaZdg
X]VeiZg;dgK89l^i]E78[ZVijgZ!E78bjhi WZijgcZYd[[#
)ODDB ¶ 9K9$K89$?E:</ZcaVg\ZhVe^XijgZdgVXi^kZ
^bV\Zdci]ZIKhXgZZc#
¶ ;dg?E:</ijgchdc$d[[i]Zoddb^c\[ZVijgZ ¡9H8 ¶ hZaZXihY^[[ZgZciineZhd[egZhZihdjcYZfjVa^oZg
hZii^c\h8A6HH>8!GD8@!?6OOdgEDE#
™977 ¶ ZcVWaZhdgY^hVWaZhWVhhZc]VcXZbZci# £HJ7I>IA: ¶ hZaZXihVhjWi^iaZaVc\jV\Z#
Notes for remote control: – First select the source you wish to control by pressing one of the source select keys on the remote control (for example CD , TUNER). – Then select the desired function (for example
É
,
í
,
ë
).
CONNECTIONS AND FUNCTIONAL OVERVIEW

1 - 13
WARNING Under no circumstances should you try to repair the system yourself, as this will invalidate the warranty. Do not open the system as there is a risk of electric shock. If a fault occurs, first check the points listed below before taking the system for repair. If you are unable to remedy a problem by following these hints, consult your dealer or Philips for help.
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I]ZVheZXigVi^dd[i]ZhXgZZcXVccdiWZ X]Vc\ZYZkZci]dj\]ndj]VkZhZii]ZI K h]VeZ# CdhdjcYdgY^hidgiZYhdjcY# I]Zb^Xgd9K9eaVnZgYdZhcdihiVgi eaVnWVX`# I]Z9K9b^XgdhnhiZbYdZhcdi gZhedcYl]Zci]ZWjiidchVgZegZhhZY# 8VccdiVXi^kViZhdbZ[ZVijgZh!hjX]Vh
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TROUBLESHOOTING

1 - 14
I]Zi^bZg^hcdildg`^c\# I]Z8adX`$I^bZghZii^c\^hZgVhZY# I]ZgZbdiZXdcigdaYdZhcdi[jcXi^dc# Adl]jbdgWjoohdjcY# AdlWVhhgZhedchZ# JcVWaZidhZaZXiEgd\gZhh^kZHXVc
HZii]ZXadX`XdggZXian# EdlZg]VhWZZc^ciZggjeiZYdgi]ZedlZgXdgY ]VhWZZcY^hXdccZXiZY#GZhZii]ZXadX`$i^bZg# HZaZXii]ZXdggZXihdjgXZ9>H8dg6JM[dg ZmVbeaZWZ[dgZegZhh^c\i]Z[jcXi^dcWjiidc# Ed^cii]ZgZbdiZXdcigdaVii]ZgZbdiZhZchdg d[i]Zjc^i# GZYjXZi]ZY^hiVcXZidi]ZeaVnZg# GZbdkZVcnedhh^WaZdWhiVXaZh# GZeaVXZi]ZWViiZgnl^i]cZldcZ# 8]ZX`i]Vii]ZWViiZgn^hadVYZYXdggZXian# EaVXZi]Z9K9b^XgdhnhiZbVh[VgVlVnVh edhh^WaZ[gdbZaZXig^XVaYZk^XZhhjX]Vh heZV`Zgh!IKi]VibVnWZXVjh^c\^ciZg[ZgZcXZ# 8]ZX`VaaheZV`Zgh[dgXdggZXiedaVg^in# 8]ZX`i]Vii]Zdjiejid[i]Zk^YZdh^\cVa^h hl^iX]ZYidNeWeg#
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TROUBLESHOOTING

2-1 2-1
REPAIR INSTRUCTION
ABCDEF
All Function No
Work ing
All Function No
Sound
Audio Li ne Out
No Ouput
Coaxial Out No
Sound
Aux In No Sound Tuner Function
No Sound
A
All Function No
Work ing
Check all systemall cable
is loose or bad INT
RE-insert and fix
the cable
YES
Panel standLED whether
light
NO
CheckSW power
+5V ou t
NOT Bad
CheckIC 9 and
conjoint part
Din cable is loose
or bad INT
OK
RE-insert and fix
the cable
YES
CheckCN3 and
control board
NO
CheckQ7 Q8 out + .5V
+3.3V whether correct
YES
Check MA IN PCB IC 9
IC IC 3 IC 5
NO
Correct
CheckRepair Q3 2 Q7
Q8 and conjoint part
B
All Function No
Sound
CheckRB5 Pin
whether at +24V
NO
Check SW power IC9
and conjoint part
CheckQ5 PinC
whether at 5V
NO
CheckIC 5 and conjoint
part
CheckIC 5 IC 5 2
IC 5 3 IC5 4 IC5 5
YES
YES
C
Audio Li ne Out
No Ouput
DVD Function SPK
whether output
NO
CheckIC 3
CheckQ2 Q23 PinB
whether at .7V
YES
YES
CheckQ 9 and conjoint
part
CheckIC 2 and conjoint
part
NO
D
Coaxial Out No
Sound
CheckIC 8 Pin 4 whether
at 5V
NO
Check FB47
CheckIC 8 and conjoint
part
YES
E
Aux In No Sound
CheckU3 Pin 9 Pin24
whether at 3.3V
NO
Check FB9
CheckU3 and conjoint
part
YES
F
Tuner Function
No Sound
CheckU3 Pin 9 Pin24
whether at 3.3V
NO
Check FB9
CheckCN3 Pin5
whether at 2V
YES
NO
CheckT3 and conjoint
part
Check IC 3 and TUNER
YES
MAIN UNIT REPAIR CHART

3-1 3-1
DISASSEMBLY INSTRUCTIONS
Figure 5
Dismantling of the Control Board
1) Loosen 6 screws " D " on the bottom of Key board as shown in figure 4.
2) Loosen 7 screws "E" at the bottom of VFD board as shown in figure 5.
Dismantling of the Power & Amplifier Board
1) Loosen 8 screws " F " on the rear plate of speaker set as shown in figure 6.
2) Loosen 3 screws " G " on the rear plate to dismantling the Amplifier board as shown in figure 7.
3) Loosen 4 screws " H " on the top of power board to dismantling the power board as shown in figure 8.
Figure 1
Figure 6
Figure 2
Dismantling of the Main Board
1) Loosen 6 screws "A" on the bottom cover as shown in figure 1.
2) Loosen 5 screws "B " on the rear plate as shown in figure 2.
2) Loosen 3 screw " C " at the main board as shown in figure 3.
A
D
Figure 4
F
G
H
Figure 7
Figure 8
B
Figure 3
Dismantling of DVD Loader
1) Loosen 2 screws " I " on the metal plate as shown in figure 9.
2) Loosen 4 screws " J " on the top of DVD loader as shown in figure 10.
I
J
Figure 9 Figure 10
C
E

3-2 3-2
SERVICE POSITIONS
Service position A
Service position B
K
L
Dismantling of the Tuner Board
1) Loosen 2 screws "K " on the rear plate as shown in figure 11.
2) Loosen 1 screw " L " at top of the tuner pad as shown in figure 12.
Figure 11
Figure 12
Note: In some service positions the components or copper patterns of one board may risk touching its neighbouring pc
boards or metallic parts. To prevent such short-circuit use a piece of hard paper or other insulating material between them.

4-1A
BLOCK DIAGRAM
4-1A
ES8380FAA
CVBS OUT
S-VIDE O
VF D
IC V 6311
VF D CONT ROL KE Y
CO AX IA L OUT
SD AR M
EW484M 1644V TA -6F I C AT 24C02
SERIA L EEPROM
MX 29LV 800CBT C-70G
EPROM
IC V 5888S
DVD PACK DR IVER
DVD L OADE R
AUX- IN
IC CE2631 A\D C
IC 74HC0 4
KEY CONTROL SYSTEM BOAR D
Logic HE X Inverter
FR
FL
MITSUMI DVD L ODE R
AM P L IF IE R
IC IRC4558
AM P L IF IE R
IC IRC4558
SU B
AM P L IF IE R
IC IRC4558
Y U V OUT
POWER AMP B OAR D
R SP K L SP K
+-
DI N OUT
MU TE+ ST BY
+5V
DI N OUT
MU TE+ ST BY
+5V
AM PLIFIE R
IC IRC4558
LINE OUT
DVD MA IN BOARD
MP 9720 DI GI TA L AM P X4
+1 8V OUT +3 3V OUT
2SB772
2SB772
+5V IN
+5V
TIP 41C
2SD882P
AC3V
-26V
SUB SP K
+-
+-
MP 7782 DI GI TA L AM P
TUNER PA CK IC TEA 5757H
PHILIPS TUNER SYSTEM
SCART OUT
IC TS 5V 330
VI DEO SW
AUDIO SE LE CTION SW
EM 78P447SAM Y
+12V OU T
TI P41C
+5V IN
IC 74HC374
I/O PIN EXPA ND
IC IRC4558
VOL TA GE CO MP ARATOR
SW PO WER B OAR D
AC IN
BRIDGE
IC TO P247
REGUL AT OR
+23V
TR ANSFORMER
IC EL817C
+ST5 V
Diode
Diode
UF1002C T
HER104
+5V
Diode
SB360
+ST 5V MU TE

4-2A
WIRING DIAGRAM
4-2A

4 - 1B
4 - 1B
BLOCK DIAGRAM (ONLY FOR /12/05/58)