Sony MEX-R5 Service Manual ▷ View online
MEX-R5
17
3-12. BASE BOARD
3-13. DISPLAY SECTION
1
2
flexible flat (6 core) cable
(CN903)
3
flexible flat (12 core) cable
(CN902)
4
BASE board
2
two screws
(B P-TITE M2)
1
Raise the preset assy up in the arrowed direction.
Note for assembly
After installing to the front panel assy,
make sure the spring is not off from the dowel.
After installing to the front panel assy,
make sure the spring is not off from the dowel.
Note for assembly
After installing to the front panel assy,
make sure the spring is not off
from the dowel.
After installing to the front panel assy,
make sure the spring is not off
from the dowel.
4
display section
front panel assy
3
MEX-R5
18
3-14. BRACKET (DISPLAY)
3-15. SPRING (S)
1
spring (M)
2
spring (M)
3
bracket (display)
4
spring (S)
spring (S)
spring (S)
dowel
dowel
5
spring (S)
2
Take off the spring from
the dowel on preset assy side.
the dowel on preset assy side.
3
Take off the spring from
the dowel on preset assy side.
the dowel on preset assy side.
preset assy
Make sure the spring is not off from the dowel.
Make sure the spring
is not off from the dowel.
is not off from the dowel.
preset assy
display (SV) assy
display (SV) assy
Put preset assy back
in the arrowed direction.
in the arrowed direction.
display (SV) assy
Note for assembly
1
Raise the preset assy
up in the arrowed direction.
MEX-R5
19
19
MEX-R5
SECTION 4
ELECTRICAL ADJUSTMENTS
SERVO SECTION
If any of the following parts was replaced, perform the “IOP Check”
and “E, F Signal Offset Adjustment” as mentioned below.
and “E, F Signal Offset Adjustment” as mentioned below.
•
Optical pick-up block (chassis (OP-DVD) complete
assy or chassis (OP-DVD) sub assy)
assy or chassis (OP-DVD) sub assy)
•
Mounted SERVO board
•
SERVO board: IC4
R29, R30, R40, R41, R43, R44
R53, R54, R57, R58, R65, R69
RV1, RV2
R53, R54, R57, R58, R65, R69
RV1, RV2
Precaution
Use the following tools and measuring devices.
•
Extension jig (Part No.: J-2502-094-1) between the SERVO
board and the MAIN board
board and the MAIN board
•
DVD test disc TDV-540C (Part No.: J-2501-235-A)
•
CD test disc PATD-012 (Part No.: 4-225-203-01)
•
Digital voltmeter
•
Oscilloscope
•
Accessory remote commander
RM-X702 (E, Chinese model)
RM-X703 (AEP, UK, Russian models)
RM-X704 (US, Canadian models)
RM-X702 (E, Chinese model)
RM-X703 (AEP, UK, Russian models)
RM-X704 (US, Canadian models)
IOP CHECK
Connection:
Procedure:
1. Check the IOP value of DVD and CD by label on the optical
pick-up.
2. Connect a digital voltmeter to TP (IOPDVD) and TP (A5V)
on the SERVO board.
3. Playback the DVD test disc (TDV-540C), and make a note of
the value of digital voltmeter.
4. Divide the measured voltage value by 16.5, and convert it into
current value.
5. Check that the calculated value is within
±
6 mA to the IOP
value given on the label.
6. Connect a digital voltmeter to TP (IOPCD) and TP (A5V) on
the SERVO board.
7. Playback the CD test disc (PATD-012), and make a note of
the value of digital voltmeter.
8. Divide the measured voltage value by 16.5, and convert it into
current value.
9. Check that the calculated value is within
±
6 mA to the IOP
value given on the label.
E, F SIGNAL OFFSET ADJUSTMENTS
Connection:
Procedure:
1. Connect an oscilloscope to TP (E) and TP (AGND) on the
SERVO board.
2. In the standby status, press the [4] key of the remote
commander.
3. Press the [5] key of the remote commander.
4. Press the [7] key of the remote commander for more than two
4. Press the [7] key of the remote commander for more than two
seconds.
5. When the test mode is selected, a peep sound is generated and
the LCD display becomes 6-digit hexadecimal number
indication.
indication.
(*1)
6. Playback the CD test disc (PATD-012).
7. Press the
7. Press the
P
key of the remote commander.
8. Adjust the RV2 on the SERVO board so that waveform level
of oscilloscope becomes between 2.75 and 2.80 V as follows.
9. Connect an oscilloscope to TP (F) and TP (AGND) on the
SERVO board.
10. Adjust the RV1 on the SERVO board so that waveform level
of oscilloscope becomes between 2.75 and 2.80 V as follows.
11. Press the [RESET] button on the MAIN board, release the test
mode.
*1)
In the TEST mode, if any abnormality occurred in the operation, for
instance, by pressing a wrong key, press the [RESET] button on the
MAIN board to reset the operation once, and then retry the operation.
instance, by pressing a wrong key, press the [RESET] button on the
MAIN board to reset the operation once, and then retry the operation.
Adjustments Location:
SERVO board
TP (IOPDVD), TP (IOPCD)
TP (A5V)
+
–
–
digital voltmeter
DVD IOP value
CD IOP value
Optical Pick-up Label:
KHS-340B
*******
$$$###
SERVO board
TP (E), TP (F)
TP (AGND)
+
–
–
oscilloscope
(DC range)
0 V
level: 2.75 to 2.80 Vp-p
E Signal Waveform:
level: 2.75 to 2.80 Vp-p
F Signal Waveform:
0 V
TP (E)
TP (IOPCD)
TP (IOPDVD)
TP (AGND)
TP (A5V)
TP (F)
RV1
F Signal Offset Adjustment
RV2
E Signal Offset Adjustment
– SERVO Board (Side B) –
Ver. 1.3
MEX-R5
20
20
MEX-R5
SECTION 5
DIAGRAMS
5-1. BLOCK DIAGRAM – SERVO Section –
AUTOMATIC POWER
CONTROL (FOR DVD)
Q1
DIFFERENCIAL
AMP
IC303
RV2
A +5V
COMPARATOR
IC4 (1/2)
DVD
ANALOG FRONT-END
IC1
DVD PROCESSOR
IC6
SD-RAM
IC7
FLASH MEMORY
IC10
OPTICAL PICK-UP BLOCK
KHS-340B
RFP
TRN
57
DQ0 – DQ15
MD0 – MD15
DATA
2
TRP
58
RFIP
2
MBA0
77
BA0
20
AMUTE
AMUTE
RESET
142
RTS 195
CTS 196
TXD 197
RXD
RTS
CTS
TXD
RXD
198
OUTL 7
RFAC 11
IN1 42
IN2 43
PA0 129
SPDIFOUT0 203
DOWNMIX 202
SCK
16
DACCLK 206
LRCK
3
LRCLK 205
BCK
1
DOCLK 207
MD
13
MD 143
MC
14
MC 144
ML
15
ML 145
VCOM 10
OUTR
R-CH
8
ZEROR 11
RF AC
14
PE 38
PI
32
FE 39
FE
29
TE 36
TE
30
TEIN 33
TZC
13
SIGM 35
AMPMNT
33
SDATA 30
SDT
7
SCLK 29
SCK
8
SDEN 31
SEN
6
DFT 26
DEFCT
10
MIRR 25
MIRR
9
XRST 28
RF_RST
214
RFN
RFIN
1
A
MA
54
B
MB
53
C
MC
52
D
MD
51
LD DVD
E
LDDVD
44
PDDVD
43
• SIGNAL PATH
: DVD/CD (AUDIO)
: DVD/CD (VIDEO)
: OPTICAL OUTPUT
• R-ch is omitted due to same as L-ch.
VIN
4
VSAG 30
A +5V
COMPARATOR
IC4 (2/2)
DVD ON SWITCH
Q4
F
AUTOMATIC POWER
CONTROL (FOR CD)
Q5
LD CD
DIGITAL
OUTPUT
OUTPUT
D/A CONVERTER
IC302
CN601
1
PD
LDCD
41
PDCD
40
VC
VC
GAIN SW
VREF
46
FCS+
VO1+
35
GAINSW
210
LIMIT SWITCH
LMT_SW
47
MODE SW
CD/DVD
215
RESET SIGNAL
GENERATOR
IC3
VR DVD
CD ON SWITCH
Q3
COMPARATOR
IC11
COIL/MOTOR DRIVE
IC2
Q2
VR CD
FCS–
VO1–
34
TRK+
VO2–
31
TRK–
VO2+
32
IN3 44
IN4 45
INSP 46
FG 47
STBY 24
SLED MOTOR A+
VO3+
29
SLED MOTOR A–
VO3–
28
SLED MOTOR B+
VO4+
26
SLED MOTOR B–
VO4–
25
SPWM1
3
STA
40
STB
38
TSCON
41
SE
31
FSCON
39
FG
D +1.5V
5
COIL U
U1
10
U2
11
COIL V
V1
6
V2
7
COIL W
W1
2
W2
3
HALL U+ (H1+)
HU+
14
HALL U– (H1–)
HU–
15
HALL V+ (H2+)
HV+
16
HALL V– (H2–)
HV–
17
HALL W+ (H3+)
HW+
18
HALL W– (H3–)
HW–
19
HALL_BAIS–
HB
13
MBA1
75
BA1
21
MCLK
85
CLK
38
DCS
81
CS
19
RAS
83
RAS
18
CAS
84
CAS
17
DWE
86
WE
16
DQMU
87
DQMH
39
DQML
88
DQML
15
MUTE1
3
MUTE2
MUTE1
MUTE2
15
WS
180
WE
11
SPWM2
4
FRONT
VIDEO OUT
CN301 (1/3)
15
CYIN
VIDEO SELECT,
75 OHM DRIVER
IC701
12
CYOUT 25
2, 4, 5, 7, 8, 10, 11, 13, 42,
44, 45, 47, 48, 50, 51, 53
A0 – A11
22 – 26,
29 – 35
89 – 92, 95 – 98,
101 – 108
MA0 – MA11
63 – 68,
71 – 74, 76, 78
HADR10 – HADR31
148 – 158, 170,
172 – 179, 181, 182
DQ7 – DQ0
167 – 164,
162 – 159
HDATA0 – HDATA7
44, 42, 40, 38,
35, 33, 31, 29
A0 – A16,
DQ15_A-1
1 – 10,
16 – 25, 48, 45
RS
168
OE
28
WP
169
WP_ACC
14
RESET
125
RST
12
DVD-L
B
VIDEO
G
Z_MUTE
C
MUTE1,
MUTE2
A
D
F
E
X1
36.864MHz
56
55
XI
XO
E SIGNAL
RV1
F SIGNAL
(Page 21)
(Page 21)
(Page 21)
(Page 21)
(Page 22)
(Page 21)
(Page 21)
Click on the first or last page to see other MEX-R5 service manuals if exist.