Sony CMT-M90DVD / HCD-M90 Service Manual ▷ View online
26
HCD-M90
[DVD TRAY LOCK MODE]
• This mode is used to unable to take sample disc out of tray in
the shop.
Procedure:
1. Press the
1. Press the
I/1
key to turn the power ON.
2. Press the
[FUNCTION]
key to select “DVD”.
3. While pressing the
x
key, press the
Z
DVD
key.
4. The message “LOCKED” is displayed on the liquid crystal
display and the tray is locked. (Even if pressing the
Z
DVD
key,
the message “LOCKED” is displayed on the liquid crystal
display and the tray is locked)
display and the tray is locked)
6. To release from this mode, while pressing the
x
key, press
the
Z
DVD
key again.
7. The message “UNLOCKED” is displayed on the liquid crystal
display and the tray is unlocked.
[DVD COLOR SYSTEM NTSC]
• The color system can be changed over NTSC or PAL.
Procedure:
1. Press the
Procedure:
1. Press the
I/1
key to turn the power ON.
2. Press the
[FUNCTION]
key to select “DVD”.
3. While pressing the
x
key, press the
I/1
key.
4. Press the
I/1
key to turn the power ON. The color system is
changed over.
[TUNER STEP CHANGE]
• A step of AM channels can be changed over between 9 kHz and
10 kHz.
Procedure:
1. Press the
1. Press the
I/1
key to turn the power ON.
2. Press the
[FUCTION]
key to select “TUNER” and press the
[TUNER AM]
key to turn the “AM”.
3. Press the
I/1
key to turn the set OFF.
4. While pressing
[REPEAT/FM MODE]
key, and press
the I/1
key
and the display of liquid crystal display changes to “AM 9K
Step” or “AM 10K Step”, and thus the channel step is changed
over.
Step” or “AM 10K Step”, and thus the channel step is changed
over.
27
HCD-M90
– DVD BOARD (Side A) –
RV501
Video Level
Adjustment
IC503
Note:
During diagnostic check, the characters and color bars can be seen
only with the NTSC monitor. Therefore, for diagnostic check, use
the monitor that supports both NTSC and PAL modes
only with the NTSC monitor. Therefore, for diagnostic check, use
the monitor that supports both NTSC and PAL modes
Instruments required:
1) Color monitor TV
2) Oscilloscope 1 or 2 phenomena, band width over 100 MHz,
2) Oscilloscope 1 or 2 phenomena, band width over 100 MHz,
with delay mode
3) DVD reference disc
HLX-501 (J-6090-071-A) (dual layer) (NTSC)
HLX-503 (J-6090-069-A) (single layer) (NTSC)
HLX-504 (J-6090-088-A) (single layer) (NTSC)
HLX-505 (J-6090-089-A) (dual layer) (NTSC)
HLX-506 (J-6090-077-A) (single layer) (PAL)
HLX-507 (J-6090-078-A) (dual layer) (PAL)
HLX-503 (J-6090-069-A) (single layer) (NTSC)
HLX-504 (J-6090-088-A) (single layer) (NTSC)
HLX-505 (J-6090-089-A) (dual layer) (NTSC)
HLX-506 (J-6090-077-A) (single layer) (PAL)
HLX-507 (J-6090-078-A) (dual layer) (PAL)
VIDEO LEVEL ADJUSTMENT
<Purpose>
This adjustment is made to satisfy the NTSC/PAL standard, and if
not adjusted correctly, the brightness will be too large or small.
This adjustment is made to satisfy the NTSC/PAL standard, and if
not adjusted correctly, the brightness will be too large or small.
Signal
Color bars
Test point
VIDEO OUT jack
(75
(75
Ω terminated)
Instrument
Oscilloscope
Adjusting element
RV501 (DVD board)
Specified Value
1.0
+ 0.04
Vp-p
– 0.02
Procedure:
1. Press the
1. Press the
I/1
key to turn the power on, and turn the
[FUNCTION]
key to select “DVD”.
2. Adjust the RV501 on the MB board to attain 1.0
+ 0.04
Vp-p.
– 0.02
Figure 5-1
CHECKING S VIDEO OUTPUT S-Y
<Purpose>
Check S-terminal video output. If it is incorrect, pictures will not
be displayed correctly in spite of connection to the TV with a S-
terminal cable.
Check S-terminal video output. If it is incorrect, pictures will not
be displayed correctly in spite of connection to the TV with a S-
terminal cable.
Signal
Color bars
Test point
S VIDEO OUT (S-Y) jack
(75
(75
Ω terminated)
Instrument
Oscilloscope
Specified Value
1.0
± 0.05 Vp-p
Procedure:
1. Press the
1. Press the
I/1
key to turn the power ON, and turn the
[FUNCTION]
key to select “DVD”.
2. Confirm that the S-Y level is 1.0
± 0.05 Vp-p.
Figure 5-2
CHECKING S VIDEO OUTPUT S-C
<Purpose>
This checks whether the S-C satisfies the NTSC Standard. If it is
not correct, the colors will be too dark or light.
This checks whether the S-C satisfies the NTSC Standard. If it is
not correct, the colors will be too dark or light.
Signal
Color bars
Test point
S VIDEO OUT (S-C) jack
(75
(75
Ω terminated)
Instrument
Oscilloscope
Specified Value
286
± 30 mVp-p (NTSC)
300
± 100 mVp-p (PAL)
Procedure:
1. Press the
1. Press the
I/1
key to turn the power ON, and turn the
[FUNCTION]
key to select “DVD”.
2. Confirm that the S-C burst is 286
± 30 mVp-p (NTSC) or 300
± 100 mVp-p (PAL).
Figure 5-3
Adjustment Location :
SECTION 5
ELECTRICAL ADJUSTMENTS
1.0
+ 0.04
Vp-p
– 0.02
1.0
±
0.05 Vp-p
286
±
50 mVp-p
(NTSC)
or
300
or
300
±
100 mVp-p
(PAL)
DVD SECTION
28
HCD-M90
Note:
Confirm each contents of this section first of all. If the results are
not satisfied, do the adjustment.
not satisfied, do the adjustment.
1. The adjustments should be performed with the rated power supply
voltage unless otherwise noted.
2. The adjustments should be performed in the order given in this service
manual.
3. The adjustments should be performed for both L-CH and R-CH.
REC BIAS ADJUSTMENT
Procedure:
1. Mode: REC
1. Mode: REC
FUNCTION: MD
2. Mode: Playback
3. Confirm playback the signal recorded in step 1 become speci-
fied values as follows.
If these values are out of specification values, adjust the RV101
(L-CH) and RV201 (R-CH) on the TC board to repeat steps
1and 2.
If these values are out of specification values, adjust the RV101
(L-CH) and RV201 (R-CH) on the TC board to repeat steps
1and 2.
Specified values: Playback output of 315 Hz to playback
output of 10 kHz:
± 0.5 dB
Adjustment Location: TC board
attenuator
set
MAIN board
AUDIO IN (MD/VIDEO) jack (SJ302)
L-CH, R-CH
AUDIO IN (MD/VIDEO) jack (SJ302)
L-CH, R-CH
1) 315 Hz
2) 10 kHz
2) 10 kHz
50 mV (– 23.8 dB)
600
Ω
blank tape
CN-123
CN-123
AF OSC
+
–
–
set
recorded
portion
portion
MAIN board
SPEAKER terminals (SJ301)
L-CH, R-CH
SPEAKER terminals (SJ301)
L-CH, R-CH
level meter
0 dB=0.775 V
DECK SECTION
RV101 (L)
RV201 (R)
REC Bias
Adjustment
Adjustment
– TC BOARD (Component Side) –
HCD-M90
29
29
SECTION 6
DIAGRAMS
6-1.
BLOCK DIAGRAM – DVD SERVO Section –
•
Refer to servicing notes (page 6) for discrimination of TYPE A/B.
SPINDLE MOTOR
DRIVE
2
64
63
63
61
62
62
55
54
54
56
57
57
59
14
13
12
11
7
8
9
10
15
16
17
18
19
26
21
22
DVD/CD
DETECTOR
DVD/CD
LASER
DIODE
MODULE
AUTOMATIC POWER
CONTROL (FOR CD)
Q002
25
AUTOMATIC POWER
CONTROL (FOR DVD)
Q001
DVD/CD RF AMP,
FOCUS/TRACKING ERROR AMP
IC001 (SUFFIX-11) IC001 (SUFFIX-22)
42
37
36
35
34
27
28
32
31
30
7
10
29
20
22
13
40
48
1
3
4
FOCUS
COIL
TRACKING
COIL
FOCUS/TRACKING COIL DRIVE,
SPINDLE/SLED/LOADING MOTOR DRIVE
IC401 (SUFFIX-21) IC401 (SUFFIX-22)
2-AXIS
DEVICE
42
41
40
36
35
45
46
47
48
38
44
27
39
33
37
136
135
137
173
174
175
180
185
144
172
197
+
–
46
47
TRACKING COIL
DRIVE
FOCUS COIL
DRIVE
19
5
45
21
198
199
7
159
161
204
205
202
203
139
140
167
SLED MOTOR
DRIVE
24
TSD-M
POWER SAVE
168
OPTICAL PICK-UP
BLOCK
(KHM-240AAA) (TYPE A)
(KHM-270AAA) (TYPE B)
(KHM-270AAA) (TYPE B)
(SPINDLE)
M
M
(SLED)
M
M
SERVO DIGITAL
SIGNAL PROCESSOR
156
24
22
RF
A
B
C
C
D
E
F
G
H
VC
DVD LD
CD LD
PD
SW
INLIM
FCS–
FCS+
TRK–
TRK+
SPM–
SPM+
SLA–
SLA+
SLB–
SLB+
RF IN
A
B
C
D
A2
B2
C2
D2
E
F
G
H
VC
CDLD
DVDPD
CDPD
DVDLD
LDSELO
ATOP
ATON
FNP
FNN
AIP
AIN
AIN
DIP
DIN
DIN
SIGO
FE
TE
TZIN
PI
PII
SRD
SWD
SCLK
SDEN
DFT
MON
LDON
VCI
MIRR
TZC
196
INLIMIT
SENSOR
166
ADC1
ADC0
ADC2
GIO6/SDI
GIO7/SDO
GIO8/SCK
GIO13
DFCTI
ADC7
GIO5/PGIN
MIRR
PWM0
PWM1
MDSO
MDPO
PDM2
PDM3
PDM0
PDM1
ADC3
ADC4
GIO1/INT3
GIO2/INT4
TZC
GIO0/INT2
XDSPRST
HCS
HINT
A
RF+
C
XRST
B
XLDON
XSDPIT, XSDPCS,
XDRVMUTE
XSDPIT
XLDON
XSDPCS
XDRVMUTE
• SIGNAL PATH
: DVD PLAY
: CD PLAY
D+3.3V
(Page 30)
(Page 30)
(Page 31)
142 ADC5
143 ADC6
LOADING MOTOR
DRIVE
25
24
16
15
17
M901
(LOADING)
M
M
176 GIO9/FGREF
177 GIO10/FGIN
200 PWM2
39
IC302 (1/2) (SUFFIX-21)
IC302 (1/2) (SUFFIX-22)
Ver 1.3
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