Philips MCD755 User manual

Version 1.0
MCD755
3141 785 32120
DVD Micro theatre
all versions
Published by LX 0737 Service Audio Subject to modification
© 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.
Service Aids ..................................................................................1-1
Info. about lead-free soldering.......................................................1-1
Service Instruction ........................................................................1-1
CD Playability Check .............................................................2-1..2-3
Disassembly digram ...............................................................3-1..3-5
Software version check and upgrading .........................................4-1
Block diagram................................................................................5-1
Wiring diagram .............................................................................6-1
Tuner Board
circuit diagram ..........................................................................7-1
layout diagram ..........................................................................7-2
VFD Board
circuit diagram ..........................................................................8-1
layout diagram ..........................................................................8-2
CPU Board
circuit diagram. .........................................................................9-1
layout diagram ..................................................................9-2...9-3
AMP Board
circuit diagram ........................................................................10-1
layout diagram ..............................................................10-2..10-3
Exploded view diagram ............................................................... 11-1
Service partslist ..................................................................12-1..12-2
Commercial partslist
TABLE OF CONTENTS
�

1-1
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
CD PLAYABILITY CHECK
2 -1

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.
CD PLAYABILITY CHECK
2-2

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
CD PLAYABILITY CHECK
2-3

MCD755 Disassembly-DVD layer
A. Remove bottom cover B.Remove top cover and loosen screws 3×10PTH(4PCS), 3×8FT(2PCS)
A1.Loosen screws 2.5×7PWMTT(3PCS),2.6×5PWMTT(7PCS) B1. Loosen screws 3×10FA（1PCS）
C. Remove side plate and loosen screws 3×6BTH(4PCS),3×6FMTT(2PCS) C1. Loosen screws where is the back of side plank 3×4FMTT(4PCS)
Remove bezal panel and loosen screws 3×5FMTT(2PCS)
AB
B1
C
C1
Disassembly diagram
Page:62

D.Loosen screws 3×10PWA(2PCS),3×8PWMTT(2PCS)and then remove mechanism core E.Loosen screws 3×10FA(7PCS),3×6FMTT(1PC),and
removerearplate
F. Remove motor and loosen screws where is the front of side plate 3×6FT(2PCS), 3×10BT（2PCS）G.Loosen screws 3×6PM(6PCS), remove CPU
cardanddecode card
D
E
F
G
Disassembly diagram
Page:63

H.Loosenscrews2×6PWT(2PCS),removeslideplate
J.Loosen screws J1 2.6×8PT(7PCS)
J2 2.6×5PT(4PCS)
J3 2.6×6PT(2PCS), and remove top cover
I. Loosen screws2.6×8PT(8PCS), and remove VFD board
H
I
J2
J1
J3
Disassembly diagram
Page:64

MCD755 Disassembly-AMP layer
A.Looen screws2.6×5PWMTT(8PCS), remove plastic bottom cover B. Loosen screws 3×10PTH(6PCS) 3×6BTH(4PCS), remove side plank and top cover
C.Loosenscrews3×6FMTT(5PCS),removebezalplank
D.Loosen screws 3×12FA(4PCS), 3×10FT(1PC), 3×5FMTT(4PCS), remove rear plank
AB
C
D
Disassembly diagram
Page:65

E. Loosen screws 3×5BM(3PCS), remove connection card F.Loosenscrews3×5BM(4PCS),removeAMPboard
G. Loosen screws 3×5BM(4PCS), remove power board
E
F
G
Disassembly diagram
Page:66

H. Loosen screws 2.6×8PT(6PCS), 2.6×5PT(2PCS), remove bezal panel
I. Loosen screws and remove top cover
H
I2
I1
I1. 2.6×8PT (7PCS)
I2. 2.6×5PT（4PCS）
I3. 2.6×6PT （2PCS）
I3
Disassembly diagram
Page:67

4 - 1 4 - 1
SOFTWARE VERSION CHECK AND UPGRADING

SET BLOCK DIAGRAM
5 - 1 5 - 1
TDA8922
TDA8920
TDA8922
PT2322
9228
24C02
PT2323
TUNER
BLOCK
IC:TEA5760
AUX2 AUX2 IN
AUX1 AUX1 IN
RED
R OUT
VIDEO
V-OUT
S-VIDEO S-V OUT
COAXIAL
OPTICAL
GREEN
GR OUT
BLUE
B OUT
MEPG2
BLOCK
MECHANISM
DVD
STBY&MUTE
CONTROL
VFD
PT16311
REM
1
GND
2
Vcc
3
REM-SENSOR
CPU5V
CPU5V
CPU5V
+Vs -Vs
DVD 12V
AC
SWITCH POWER
STANDBY
+12V
+Vs
-Vs
CPU5V
DVD 12V
DVD ON/OFF
TUNER POWER
TUNER IN
AUX2 IN
AUX1 IN
DVD MR
DVD ML
D-FL D-FR SL SR CEN SW
SW
CEN
SL
SR
FL
FR
FL
FR
SW
CEN
SL
SR
CPU
SDA
SCL
FR
FL
SL
SR
CEN
SW
KEY
CONTROL
FR
SR
CEN
SW
SL
FL
STANDBY
MUTE
SUR-MUTE
MUTE
SUR-MUTE
GND

6 - 1 6 - 1
SET WIRING DIAGRAM

VCC
A6
RFIN1
B6
FREQIN
C1
RFIN2
C6
RFGND
C5
LOOPSW
A2
CPOUT
A1
LO1
A3
LO2
A4
VccVCO
A5
SWPORT
B1
BUSEN
C2
VREFDIG
E3
CLOCK
E2
DATA E1
DGND D3
VDD D1
DGND D2
INTX B2
TMUTE D6
VAFR E6 VAFL E5
MPXOUT E4
AGND B5
TIFcentre D5
IC1
TEA5760UK
C8
47pF
C7
27pF
C6
100pF
L1
120nH
C10
103
C13
104
C16
103
R15
10K
R18
100K
C11
103
L7
39nH
SW1
BUS_ENABLE
R19
10R
C17
103
C15
103
SCL
SDA
INTX
C12
104
R22
330
C18
47uF
+5V
3.0V
3.0V
MPX
C5 224
C4 224
Q2
9014
Q3
9014
R4
4.7K
R5
4.7K
R3
1M
R1
47
R13
1K
R14
1K
C1
22uF
C2
224
C3
224
R2
1M
+5V
LOUT
ROUT
DZ1
3.6V
R6
4.7K
C19
47uF/6.3V
ROUT
LOUT
SGND
+5V
SCL
SDA
SGND
1
2
3
4
5
6
7
8
CN1
8P
L5 600R
L4 600R
RFIN
R8
68k
CLOCK
X1
32.768K
R12
1M
C20
12pF C21
39pF
C14
10pF
C9
104
R11
10M
R16
10K
CLOCK
3.0V
L8
10uH
Q1
8050
1A
1
GND
2
2A
32Y 4
VCC 5
1Y 6
IC2 74HC2G04
C22
22uF
C23
100pF
C24
22uF
C25
223
CIRCUIT DIAGRAM - TUNER BOARD
7 - 1 7 - 1

LAYOUT DIAGRAM - TUNER BOARD
7 - 2 7 - 2

8 - 18 - 1
CIRCUIT DIAGRAM - VFD BOARD
SW1
1
SW2
2
SW3
3
SW4
4
DOUT
5
DIN
6
IC
7
CLK
8
STB
9
KEY1
10
KEY2
11
KEY3
12
KEY4
13
Vdd 14
S1/KS1 15
S2/KS2 16
S3/KS3 17
S4/KS4 18
S5/KS5 19
S6/KS6 20
S7/KS7 21
S8/KS8 22
S9/KS9 23
S10/KS10 24
S11/KS11 25
S12/KS12 26
S13 27 S14 28 S15 29 S16 30
S17/G12 31 S18/G11 32
Vdd 33
VEE 34
S19/G10 35
S20/G9 36
G8 37 G7 38 G6 39
G5
40
G4
41
G3
42
G2
43
G1
44
Vdd
45
LED5
46
LED4(BBE)
47
LED3(POWER)
48
LED2(FANCT)
49
LED1(7507RST)
50
Vss
51
OSC
52
IC601
uPD16311
R602 47K
R605
33K
R606 33K R607 33K R608 33K
K4
K3
K2
K1
D602 4148
D601 4148
STB1 CLK DATA
S1
S2
S3
S4
S5
S6
S7
S8
S9
S1 S2 S3 S4 S5 S6 S7
KS2
-24V
+5VS
S1
S2
C602
104P
R603
2.2/0.5
C604 104P
C603
104P
SW601
TACT(STBY)
VF1
1
VF1
2
S1
3
S2
4
S3
5
S4
6
S5
7
S6
8
S7
9
S8
10
G1
11
G2
12
G3
13
G4
14
G5
15
G6
16
NC
17
NC
18
NC
19
NC
20
G7
21
G8
22
G9
23
G10
24
G11
25
G12
26
S9
27
S10
28
S11
29
S12
30
S13
31
S14
32
S15
33
S16
34
VF2
35
VF2
36
VFD701
S10
S11
S12
S13 S14 S15 S16 G12 G11 G10 G1 G2 G3 G4 G5 G6 G7 G8 G9
G2 G3 G4 G5 G6 G7 G8 G9 S12 S11 G11 G10 S8 G1 S10 S9 G12
1
2
3
4
5
CN602
2.0/6P
STB1
DATA
CLK
V-GND
+5VS
1
2
3
CN601
2.0/3P
-28V
VF2-1
VF1-1
D603 4148
S3 KS3
R604
2.2/0.5
C605
104P
KS3
C601
47uF
C607
334P
C608
334P
C609
334P
C610
334P
R601 4K7 R609 10K R610 10K
K1
K2
K3
K4
KS2
+5VS
SW608
TACT(CH-)
SW606
TACT(CH+)
SW604
TACT(PRE)
SW602
TACT(NEXT)
SW607
TACT(PLAY/PRESET)
SW605
TACT(STOP/BAND)
SW603
TACT(OPEN/CLOSE)
KS2
K1
K2
K3
K4
KS3
S13 S14 S15 S16
R613
1K LED601
USB2
All parts comply with suppliey environment
note：
protect material licf regulate by green envionment management
tolerance RES±10％
CAP±20％，
special parts nated beside parts

8 - 2 8 - 2
LAYOUT DIAGRAM - VFD BOARD

A5V
X1
4.19MHz
C64
30P
C65
30P
X2
32.768KHz
C66
15P
C67
15P
C81 47uF/16V
C82
104P
R87
22K
D6
4148
C79
10uF/16V
SCL SDA
MUTE STANDBY
TUN-ON
D3
IN60
A0 1
A1 2
A2 3
GND 4
SDA
5
SCL
6
TEST
7
Vdd
8
IC4
24C01
C71
104P
1 2 3 4 5 6
CN7
1 2 3 4
CN9
D5
IN60
REMOTE
R55
68K
R56
4.7K
DS-STB1
DS-DAT
DS-CLK
REMOTE
ROT-A
ROT-B
R46
10K
R45
10K
R42 10K
R43 10K
C47
103P
C48
103P
DS-STB1 DS-DAT DS-CLK
REMOTE
1 2 3 4 5
CN5
7P/2.0
A5V
MUTE STANDBY ROT-B ROT-A
A5V
SUR-MUTE
L1 1 L2 2 L3 3 L4 4
FL-IN 5
FR-IN 6
CEN-IN 7
SW-IN 8
SL-IN 9
SR-IN 10 MIXO 11
VCC 12
REF 13
GND 14
SDA
15
SCL
16
SR-OUT
17
SL-OUT
18
SW-OUT
19
CEN-OUT
20
FR-OUT
21
FL-OUT
22
LPF-O
23
LPF-I
24
R4
25
R3
26
R2
27
R1
28
IC1
PT2323
R11
270
R10
270
R9
270
R8
270
R7
270
R6
270
C16
683J
C13
223J
R12
24K
R26
24K
C14
4.7uF/50V
C15
4.7uF/50V
C28
4.7uF/50V
C27
4.7uF/50V
C4 4.7uF/50V
C12 4.7uF/50V C10 4.7uF/50V C9 4.7uF/50V C8 4.7uF/50V C7 4.7uF/50V C6 4.7uF/50V C5 4.7uF/50V
C1
10uF/25V
C3
100uF/16V
C2
104P
R2
100
R5
20K
R4
20K
C23
4.7uF/50V
C22
4.7uF/50V
C21
4.7uF/50V
C20
4.7uF/50V
C19
4.7uF/50V
C18
4.7uF/50V
1 2 3 4 5 6 7 8 9
CN1
9P/2.0
D-MUTE AGND FL FR AGND SR SL SW CEN
TUN-L AGND TUN-R TUN-Vcc
Q1
9015
R19
10K
R18
1K
Q2
9014
R1
47K
R17
4.7
C25
100uF/16V
C24
104P
R21
10K
R24
10K
R20
33K
R22
33K
1 2 3 4 5
CN2
TUN-ON
D4
4148
D1
4148
MUTE
AUX1-L
AUX1-R
SCL
SDA
CPU5V
CPU5V
SUR-MUTE
1 2 3
CN11
3P/2.0
DGND DVD IR DVD STB DVD CLK DVD DATA
PLL CE PLL DATA PLL CLK
DGND
L1
10UH
C87
220uF/16V
C89
104P
R64
10K
R27
6.8K
R29
6.8K
R28
100K
R30
100K
DVD ON
-28V VF2 VF1
1
2
3
CN13
4P/2.0
R90
H1A 125V
DVD-SW
R71 100 R74 100
C83 300
C84 300
C86 300
C92 300
C52 223(M)
C53 223(M)
C54 10uF/16V
C55 473(M)
C56 223(M)
RCMID2_FR
1
RCMID1_RF
2
CTRE_FR
3
IN_FR
4
IN_SR
5
IN_SUB
6
VREF
7
GND
8
IN_CT
9
IN_SL
10
IN_FL
11
CTRE_FL
12
RCMID1_FL
13
RCMID3_FL
14 RCBAS1_FL 15
RCBAS2_FL 16
OUT_FL 17
OUT_SL 18
OUT_CT 19
VCC 20
OUT_SUB 21
OUT_SR 22
OUT_FR 23
SCL 24
SDA 25
GND 26
RCBAS2_FR 27
RCBAS1_FR 28
IC2
PT2322 C59 104M
C58 104M
C43 103M
C42 103M
C31 103M
C32 103M
R32
3.3K R53
6.2K
R50 6.2K
R31
3.3K
R51 20K
R52 20K
C33 222M
C37
10uF/16V
C41 222M
C60
100uF/16V
C61
104P
R54
47
C57 223(M)
C51 104
C50 104
R68 4.7k R69 100
C69 300
SDA SCL
C40
4.7uF/50V
C34 4.7uF/50V
C38
4.7uF/50V
C36 4.7uF/50V
C39
4.7uF/50V
C35 4.7uF/50V
QUAL
1
RDDA
2
VREF
3
MPX
4
OSEL
5
GND
6
ARI
7
FILOUT
8FSEL 9
TM 10
EXRES 11
Vs 12
OSCIN 13
OSCOUT 14
T57 15
RDCL 16
IC5
PT2579
C78
2.2uF/50V
C100
10uF/16V
C101
104
X3
4.33MHz
C103
47P
C102
82P
C80
561
R88 2K2
R99
4.7K
R86 10K
C77
330P
MPX
MPX
A5V
R76
10K
R77
10K
ST/MO
OPEN-SW CLOSE-SW
M-CLOSE
M-OPEN
DVD-SW
ST/MO
CPU5V
R61
4.7K
CPU5V
R65
10K
R66
10K
CPU5V
R98
2.2K
R97
2.2K
R93
1K
R94
1K
Q7
8050
Q8
8050
1 2 3 4 5
CN12
5P/2.0
Q6
8550
Q5
8550
OPEN-SW CLOSE-SW
M1+ M1-
DGND
R95
2.2k
R96
2.2k
C97
470p
C110
470p
+5V
M-CLOSE M-OPEN
R59 100
R75
100
R85 100
R84 100
C72
300
C73
300
C74
300
R78
10K
R83 100
R82 100
R89 100
C75
300 C76
300
C99
300
R39 100
R38 100
R41 100
C44
221
C45
221
C46
221
DS-STB1 DS-DAT DS-CLK
R60 100 R62 100
C63 300
C62 300
R79
1K
R80 1K
R81 1K
L4
10UH
+R5V
ST/MO
R3
4.7K
ECO VCC
A5V1
C11
104p
C17 104p
L5
2.2k L6
2.2K
R13 100
ECO POWER
R15 100
C29
300
1
2
3
45
6
7
8
IC8
AC6811
CPU5V
R23
1K
R16
1K
R14
10K
M-DOWN
36 M-UP
35 LED
34
DVD-STB 17
DVD-CLK 16
MUTE 30
PLL-DA 21
SUR-MUTE 29
RDS-SDA 19
EOC-POWER 27
SDA 26
SCL 25
TUN-ON 24
PLL-CE 23
PLL-CL 22
TEST
9
Vss
6
XT-OUT
7
XT-IN
8
M-CLOSE 32
DVD-DI 15
DVD-DO 14
DVD-ON 13
RESET 12
X-OUT
11 X-IN 10
RDS-Q 20
RDS-SCL 18
M-OPEN 33
Vdd
5CLOSE-SW 4DVD-TMS 3
OPEN-SW
1
ROT-A
41
KEY
2
ROT-B
42
REMTOE
40 DS-CLK
39 DS-DAT
38 DS-STB1
37
STANDBY 31
ST/TUNED 28
M+
43
M-
44
IC3
2SC9228
OUT GND IN
IC9
7805
C93
100uf/16v
+5V R25
H1A 125V
C49
104
R33 4.7K R34 2.2K R36 2.2K R37 2.2K R40 2.2K
ECO POWER
R108 10k R109 10k R120 10k
CPU5V
-28V FL-IN SR-IN +12V ECO POWER ECO VCC
DGND
ECO GND CEN-IN SW-IN SL-IN FR-IN
MUTE-
DVDGND
DVD-vcc
LED VF1 VF2 KEY FERQ-H
R110
1K
R111
1K
1
2
CN14
2P/2.5
DM+
DM-
R113
1K
R114
1K
R112
2.2k
R116
2.2k
C105
470p
C104 470p
Q13
8050
Q12
8050
Q11
8550
Q10
8550
M-DOWN M-UP
M-DOWN
M-UP
LED
FERQ-H
1 2
CN15
2P/2.0
R118
10K
D7
4148
R117
10K
C108
100UF/16V
LED
+12V
Q14
8050
R115
4.7K
1 3 2
J200
RCA-2P
+5V
DVD-vcc
KEY
STANDBY- SUR-MUTE- ROT-B- ROT-A-
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34
CN6
34P12
1 2 3
CN401
3P/2.0
1 2 3
JACK401
OPTICL
+12V
M-DOWN
M-UP
REMOTE KEY LED
Q3
BC817
Q4
BC817
R127
1M
R126
1K
R128
1M
R125
1K
C122
1UF/50V
C123
1UF/50V
C112
100p
C113
100p
R12110K
R131
220
C109
100UF/16V C111
104P
R129
2.2K
R130
2.2K
V+
1
OUT1
2
IN1
3
INT
4
GND 10
OUT2 9
IN1 8 SW 7
VREF
5SENCE 6
IC10
D2761
C120
100UF/16V
C118
224(M)
C117
223(M)
C116
224(M)
C114
224(M)
C115
1UF/50V
R124
2.2K*
C119
1UF/50V
C121 104P
R123 10K
R122220
+12V
DZ1
3.3V
osci
1
osco
2
int
3
vss
4sda 5
scl 6
clk 7
vdd 8
IC088
8563
C090
104
C089
15P
CLK OUT
SCL
SDA
X008
32.768KHz
CPU5V 1
2
3
4
5
6
7
CN088
7P/2.0
TUN-R
AGND
TUN-L
CPU5V
SCL
SDA
CLK OUT
9 - 1
CIRCUIT DIAGARM - CPU BOARD
9 - 1

LAYOUT DIAGARM - CPU BOARD
9 - 2 9 - 2