Sony CMT-M80V / HCD-M80 Service Manual ▷ View online
13
HCD-M80
SECTION 4
TEST MODE
[COLD RESET]
• The cold reset clears all data including preset data stored in the
RAM to initial conditions. Execute this mode when returning
the set to the customer.
the set to the customer.
Procedure:
1. Press the
1. Press the
?/1
key to turn the power ON.
2. Press three keys
[FUNCTION]
,
z
REC
, and
?/1
simultaneously.
3. The set is reset, and becomes standby state.
[PANEL TEST]
• This mode is used to check the liquid crystal display, LED,
destination, model, software version, and key.
Procedure:
1. Press the
1. Press the
?/1
key to turn the power ON.
2. Press three
[PLAY MODE/TUNING MODE]
,
z
REC
, and
[FUNCTION]
simultaneously.
3. Liquid crystal display and LEDs are all turned on.
4. When you want to enter the version check mode, press the
4. When you want to enter the version check mode, press the
[PLAY MODE/TUNING MODE]
keys. The destination and model
are displayed.
5. Each time
[PLAY MODE/TUNING MODE]
key is pressed, the
display changes starting from MC version, GC version, ST
version, TA version, TM version, and TC version this order,
and returns to the MC version display.
version, TA version, TM version, and TC version this order,
and returns to the MC version display.
6. When
[REPEAT/FM MODE]
key is pressed while the version
numbers are being displayed except model and destination,
year, month and day of the software creation appear. When
year, month and day of the software creation appear. When
[REPEAT/FM MODE]
key is pressed again, the display returns to
the software version display. When
[PLAY MODE/TUNING MODE]
key is pressed while year, month and day of the software creation
are being displayed, the year, month and day of creation of the
software versions are displayed in the same order of version
display.
are being displayed, the year, month and day of creation of the
software versions are displayed in the same order of version
display.
7. Press the
[CD SYNCHRO]
key, and the key check mode is activated.
8. In the key check mode, the liquid crystal display displays “K
0
J0 V
0
”. Each time a key is pressed, “K” value increases.
However, once a key is pressed, it is no longer taken into account.
9. To release this mode, press three keys in the same manner as
step 2, or disconnect the power cord.
[CD SHIP (MECHA) MODE]
• This mode moves the optical pick-up to the position durable to
vibration. Use this mode when returning the set to the customer
after repair.
after repair.
Procedure:
1. Press the
1. Press the
?/1
key to turn the power ON.
2. Press the
[FUNCTION]
key to select “CD”.
3. Press three keys
[REPEAT/FM MODE]
,
[FUNCTION]
and
[DSG]
simultaneously.
4. The message “LOCK” is displayed on the liquid crystal display
and turn the power off automatically, and becomes delivery
mode.
mode.
[SHIP MODE]
• This mode is used to execute “COLD RESET” and “CD SHIP
(MECHA)” simultaneously.
1. Press the
?/1
key to turn the power ON.
2. Press the
[FUNCTION]
key to select “CD”.
3. Press three keys
[FUNCTION]
,
[DSG]
, and
[CD SYNCHRO]
simultaneously.
4. The message “LOCK” is displayed on the liquid crystal display
and turn the power off automatically, and set is reset, then
becomes delivery mode.
becomes delivery mode.
[CD 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
?/1
key to turn the power ON.
2. Press the
[FUNCTION]
key to select “CD”.
3. While pressing the
[DSG]
key, press the
Z
CD
key.
4. The message “LOCKED” is displayed on the liquid crystal
display and the tray is locked. (Even if pressing the
Z
CD
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
[DSG]
key, press
the
Z
CD
key for 5 seconds.
7. The message “UNLOCKED” is displayed on the liquid crystal
display and the tray is unlocked.
[REPEAT 5 LIMIT OFF MODE]
Number of repeat for CD playback is 5 times when the repeat mode
is “REPEAT”. This mode enables CD to repeat playback for limitless
times.
Procedure:
1. Press the
is “REPEAT”. This mode enables CD to repeat playback for limitless
times.
Procedure:
1. Press the
?/1
key to turn the power ON.
2. Press the
[FUNCTION]
key to select “CD”.
3. Press three keys
[REPEAT/FM MODE]
,
[FUNCTION]
and
z
REC
simultaneously to enter the repeat 5 limit off mode.
[TUNER STEP CHANGE]
(EXCEPT Saudi Arabia model)
(EXCEPT Saudi Arabia model)
• A step of AM channels can be changed over between 9 kHz and
10 kHz.
Procedure:
1. Press the
1. Press the
?/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
?/1
key to turn the set OFF.
4. While pressing
[REPEAT/FM MODE]
key, and press
the ?/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.
[VCD COLOR SYSTEM MODE ]
• The color system can be changed over PAL, AUTO or NTSC.
Procedure:
1. Set to the standby state.
2. Press the
Procedure:
1. Set to the standby state.
2. Press the
l
m
and
?/1
buttons simultaneously to change
the color system to PAL, and the message “COLOR PAL” is
displayed on the liquid crystal display.
displayed on the liquid crystal display.
3. Press the
M
L
and
?/1
buttons simultaneously to change
the color system to AUTO, and the message “COLOR AUTO”
is displayed on the liquid crystal display.
is displayed on the liquid crystal display.
4. Press the
x
and
?/1
buttons simultaneously to change the color
system to NTSC, and the message “COLOR NTSC” is displayed
on the liquid crystal display.
on the liquid crystal display.
14
HCD-M80
SECTION 5
ELECTRICAL ADJUSTMENTS
– BD BOARD (Conductor Side) –
TP70
(TE)
TP68
(FE)
TP71
(RFDC)
TP73
(DVC)
TP72
(RFAC)
Note:
Clear RF signal waveform means that the shape “
◊ ” can be clearly
distinguished at the center of the waveform.
TRAVERSE LEVEL CHECK
Procedure :
1. Connect an oscilloscope to TP70 (TE) and TP73 (DVC) on the
1. Connect an oscilloscope to TP70 (TE) and TP73 (DVC) on the
BD board.
2. Turn the power ON.
3. Load a disc (LUV-P01) and playback the number nine track.
4. Press the
3. Load a disc (LUV-P01) and playback the number nine track.
4. Press the
CD
N button. (Becomes the 1 track jump mode.)
5. Confirm that the level B and A (DC voltage) on the oscillo-
scope waveform.
Connecting Location:
Note:
1.
CD Block is basically designed to operate without adjustment. Therefore,
check each item in order given.
check each item in order given.
2.
Use LUV-P01 (Part No. 4-999-032-01) unless otherwise indicated.
3.
Use an oscilloscope with more than 10M
Ω impedance.
4.
Clean the object lens by an applicator with neutral detergent when the
signal level is low than specified value with the following checks.
signal level is low than specified value with the following checks.
S-CURVE CHECK
Procedure :
1. Connect an oscilloscope to TP68 (FE) and TP73 (DVC) on the
1. Connect an oscilloscope to TP68 (FE) and TP73 (DVC) on the
BD board.
2. Turn the power ON.
3. Load a disc (LUV-P01) and actuate the focus search. (In conse-
3. Load a disc (LUV-P01) and actuate the focus search. (In conse-
quence of open and close the disc tray, actuate the focus search)
4. Confirm that the oscilloscope waveform (S-curve) is symmetri-
cal between A and B. And confirm peak to peak level within 2
±
0.5 Vp-p.
Note:
• Try to measure several times to make sure than the ratio
of A : B or B : A is more than 10 : 7.
• Take sweep time as long as possible and light up the
brightness to obtain best waveform.
RF LEVEL CHECK
Procedure :
1. Connect an oscilloscope CH1 to TP71 (RFDC), CH2 to TP72
1. Connect an oscilloscope CH1 to TP71 (RFDC), CH2 to TP72
(RFAC) and TP73 (DVC) on the BD board.
2. Turn the power ON.
3. Load a disc (LUV-P01) and playback the number nine track.
4. Confirm that oscilloscope waveform is clear and check if RF
3. Load a disc (LUV-P01) and playback the number nine track.
4. Confirm that oscilloscope waveform is clear and check if RF
signal level is correct or not.
level=1.2
±
0.55Vp-p
symmetry
A (DC voltage)
center of
waveform
waveform
B
DVC
1 track jump waveform
TP70 (TE)
TP73 (DVC)
BD board
+
–
–
oscilloscope
RF signal waveform
VOLT/DIV : 200mV
TIME/DIV : 500ns
TIME/DIV : 500ns
level : 0.75
±
0.1Vp-p (RFDC)
1.05
±
0.3Vp-p (RFAC)
+
–
–
oscilloscope
TP71 (RFDC)
TP72 (RFAC)
BD board
TP73 (DVC)
symmetry
S-curve waveform
within 2
±
0.5Vp-p
A
B
+
–
–
oscilloscope
BD board
TP68 (FE)
TP73 (DVC)
CD SECTION
HCD-M80
15
15
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.
voltage unless otherwise noted.
2.
The adjustments should be performed in the order given in this service
manual.
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) –
– VMP BOARD (Component Side) –
TP308
(V-OUT)
TP70
(54 MHz)
TP182
(4.2336 MHz)
TP415
(L-OUT)
TP413
(R-OUT)
RV501
Video
Level
Adjustment
VIDEO SECTION
VIDEO LEVEL ADJUSTMENT
(AUDIO LEVEL/VIDEO CLOCK/AUDIO SERVO
CLOCK CHECK)
(AUDIO LEVEL/VIDEO CLOCK/AUDIO SERVO
CLOCK CHECK)
Procedure :
1. Connect an oscilloscope to TP308 (V-OUT) on the VMP board.
2. Connect a level meter to TP415 (L-OUT) and TP413 (R-OUT)
1. Connect an oscilloscope to TP308 (V-OUT) on the VMP board.
2. Connect a level meter to TP415 (L-OUT) and TP413 (R-OUT)
on the VMP board.
3. Connect a frequency counter to TP70 (54 MHz) and TP182
(4.2336 MHz) on the VMP board.
3. Turn the power ON.
4. Set a test disc (HLV-402 (Part No. 8-909-870-00))
5. Press three buttons
4. Set a test disc (HLV-402 (Part No. 8-909-870-00))
5. Press three buttons
[FUNCTION]
,
[DSG]
and
[DIRECTION]
simultaneously.
6. The message “MPEG AV TEST” is displayed on the liquid
crystal display. Color bar signal outputs and sine-wave (1 kHz
0dB) appears.
0dB) appears.
7. Adjust the RV501 on the VMP board for 0.714
± 0.05 Vp-p.
Note:
TP308 (V-OUT) on the VMP board must be teminated by 75
Ω.
8. Confirm that the value of level meter is 2.5
± 2.0 dBs. (If audio
output disappear, press the
[PLAY MODE/TUNING MODE]
button, and the message “CD SERVICE” is displayed on the
liquid crystal display)
liquid crystal display)
9. Confirm that the value of frequency counter is 54 MHz
± 400
Hz.
10. Confirm that the value of frequency counter is 4,2336 MHz.
11. Press the
11. Press the
[REPEAT/FM MODE]
button to change the traverse
ON/OFF, and the message “TRAVERSE ON” or “TRAVERSE
OFF” is displayed on the liquid crystal display.
OFF” is displayed on the liquid crystal display.
12. Press the
l
m
button to turn the optical pick-up inside
position, and the message “SLED IN” is displayed on the liq-
uid crystal display.
uid crystal display.
13. Press the
M
L
button to turn the optical pick-up outside
position, and the message “SLED OUT” is displayed on the
liquid crystal display.
liquid crystal display.
14. Change disc to a MP3 test disc (MP3 1kHz 0dB sine-wave is
recorded)
15. Confirm that the value of level meter is 2.4
± 2.0 dBs.
+
–
–
level meter
VMP board
TP415 (L-OUT)
TP413 (R-OUT)
VMP board
TP70 (54 MHz)
TP182 (4.2336 MHz)
+
–
–
frequency counter
VMP board
TP308 (V-OUT)
+
–
–
oscilloscope
0.714
±
0.05 Vp-p
HCD-M80
16
16
SECTION 6
DIAGRAMS
6-1.
BLOCK DIAGRAM – CD SERVO Section –
60
SYSRST
VO1–
VO1+
6
7
8
9
16
18
11
10
12
2
1
173
137 138
140 141
142 143
27
26
31
32
34
35
1
2
5
10
DETECTOR
A
B
C
D
RF
SUMMING
AMP
FOCUS
ERROR AMP
TRACKING
ERROR AMP
RFAC
FE
RF AMP,
FOCUS/TRACKING ERROR AMP
IC103
TE
E
F
F I-V AMP
E I-V AMP
AUTOMATIC
POWER
CONTROL
Q101
APC LD
AMP
LD
LD
PD
LASER DIODE
RFAC
164 FE
160 RFDC
162 TE
163 SE
DIGITAL SIGNAL PROCESSOR,
DIGITAL SERVO PROCESSOR
IC505 (1/2)
MDP
133
SFDR
IN3+
IN4
IN3–
VO3+
VO3–
IN2–
IN2+
IN1–
IN1+
SRDR
TFDR
TRDR
FFDR
FRDR
SSTP
135
VO4+
VO4–
M101
(SPINDLE)
MOTOR
DRIVE
MOTOR
DRIVE
VO2–
VO2+
M
M
M102
(SLED)
FOCUS/TRACKING COIL DRIVE,
SPINDLE/SLED MOTOR DRIVE
IC102
2-AXIS
DEVICE
(TRACKING)
(FOCUS)
OPTICAL PICK-UP
BLOCK
(A-MAX. 3)
SW
PD
55
56
47
52
168
170 171
169
FILTER
FILO
PCO
CLTV
FILI
EQ
IN
IN
3
4
EQ
AC
SUM
17
FEI
RF DC
AMP
28
RFDCO
29
RFDCI
COIL
DRIVE
COIL
DRIVE
D/A1
D/A3
D/A4
D/A2
LOAD-OUT 67
LOAD-IN 68
6
5
IN2
IN1
MOTOR
DRIVE
10
1
OUT2
OUT1
LOADING MOTOR
DRIVER
IC607
D/A
CONVERTER
IC506
M901
(LOADING)
M
SYSTEM CONTROLLER
IC601 (1/4)
• SIGNAL PATH
: CD PLAY
• R-ch is omitted due to same as L-ch.
RFAC
VCA
(LIMIT)
When the optical
pick-up is inner
position
pick-up is inner
position
ON :
150
149
XTAO
XTAI
X501
33.8688MHz
RFC
26
FREQUENCY
SELECT SWITCH
Q102
93
91
88
124
PCMD
BCK
LRCK
C2PO
C2PO
111
102
109
113
DATA
CLOK
XLAT
SENS
96
126
98
114
SCOR
SQSO
L SQCK
L SCLK
131
121
105
GFS
L FOK
L CDXRST
189
XTSL
6
5
3
AO5
AO4
AO3
2
13
9
AO2
AO1
AO6
D/A4
D/A2
D/A1
D/A3
HUE
SHARPNESS
STBY
8
RST
4
CLK
DATA
LD
11
12
CLK
10
LD
DI
DATA
BCK
LRCK
C2PO
B
(Page 17)
DATA, BCK,
LRCK, C2PO
CONT
DATA
CLOK
XLAT
SENS
SCOR
SQSO
SQCK
SCLK
GFS
FOK
XRST
C
(Page 17)
A
(Page 17)
DATA, CLK, LD
D
(Page 17)
SYSRST
E
(Page 17)
SHARPNESS, HUE
F
(Page 17)
DATA, CLOK, XLAT, SENS,
SCOR, SQSO, SQCK,
SCLK, GFS, FOK, XRST
15
23
70
69
CLOSE
OPEN
S1
DISC TRAY
OPEN/CLOSE
DETECT
CLOSE
OPEN
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