Sony CMT-V50IP Service Manual ▷ View online
CMT-V50iP
29
SECTION 3
TEST MODE
COLD RESET
It can clears all data including preset data stored in the memory to
initial conditions. Execute this mode when returning the this unit
to the customer.
It can clears all data including preset data stored in the memory to
initial conditions. Execute this mode when returning the this unit
to the customer.
Procedure:
1. Press the [
1. Press the [
?
/
1
] button to turn the power on.
2. Touch the [x] sensor and press the [
?
/
1
] button simultane-
ously for three seconds.
3. The message “RESET” is displayed on the liquid crystal dis-
play, then becomes the standby state.
TOUCH KEY SOUND
It can turn on/off the beep sound when touching the touch key.
It can turn on/off the beep sound when touching the touch key.
Procedure:
1. Press the [
1. Press the [
?
/
1
] button to turn the power on.
2. Touch the [x] sensor and press the [VOL −] button simultane-
ously for three seconds.
3. The message “BEEP OFF” is displayed on the liquid crystal
display, then becomes the beep sound off state.
4. Touch the [x] sensor and press the [VOL −] button simultane-
ously for three seconds again.
5. The message “BEEP ON” is displayed on the liquid crystal
display, then becomes the beep sound on state.
AUTO STANDBY TEST
It can confi rm the auto standby function operates normally.
The auto standby function operates in 60 seconds in this mode.
(Usually, it takes 30 minutes)
It can confi rm the auto standby function operates normally.
The auto standby function operates in 60 seconds in this mode.
(Usually, it takes 30 minutes)
Procedure:
1. Press the [
1. Press the [
?
/
1
] button to turn the power on.
2. Touch the [FUNCTION] button to turn except “FM” and
“AM”.
3. Touch the [BASS BOOST] sensor and press the [VOL +] but-
ton simultaneously for fi ve seconds.
4. It enters the auto standby test mode, and the following screen
is displayed on the liquid crystal display.
In this mode, “STEREO” continues blinking on the liquid
crystal display.
crystal display.
Signal level
(0 or 1)
Countdown timer
(60 to 0)
STEREO
SIGX
XX
Screen display
5. In the case of the following states, the countdown timer de-
creases. This unit will become standby states if the countdown
timer decreases to “0”.
timer decreases to “0”.
• Operation is not performed.
• The signal level is lower than threshold.
Releasing method:
Touch the [BASS BOOST] sensor and press the [VOL +] button
simultaneously for fi ve seconds.
Touch the [BASS BOOST] sensor and press the [VOL +] button
simultaneously for fi ve seconds.
COMMON TEST
It can confi rm the MAX/MIN of volume.
It can confi rm the MAX/MIN of volume.
Procedure:
1. Press the [
1. Press the [
?
/
1
] button to turn the power on.
2. Touch the [FUNCTION] sensor and press the [n] button si-
multaneously for fi ve seconds.
3. It enters the common test mode.
In this mode, “cPLAY” and “SLEEP” continues blinking on
the liquid crystal display.
the liquid crystal display.
4. When pressing the [VOL +]/[VOL −] button, the message is
changed with VOL MIN ↔ VOL 16 ↔ VOL MAX on the
liquid crystal display.
liquid crystal display.
Releasing method:
Press the [
Press the [
?
/
1
] button to turn the power off.
PANEL TEST
It can confi rm the liquid crystal display, LEDs, model name, desti-
nation, software version, touch sensor keys and buttons.
It can confi rm the liquid crystal display, LEDs, model name, desti-
nation, software version, touch sensor keys and buttons.
Procedure:
1. Press the [
1. Press the [
?
/
1
] button to turn the power on.
2. Touch the [u] sensor and press the [VOL +] button simulta-
neously for fi ve seconds.
3. It enters the panel test mode, and all segments on the liquid
crystal display and all LEDs light up.
4. When touching the [. TUNE –] sensor, the model name
and destination are displayed on the liquid crystal display al-
ternately.
ternately.
Destination
Display
Model Name
Destination
US and Canadian
HFX-164
NA
AEP
HFX-165
CE2
Russian
HFX-165
RU
Australian
HFX-164
AU
Latin American
HFX-165
LATIN
Brazilian
HFX-165
BR
Singapore and Thai
HFX-165
ASIA2
Korean
HFX-165
KR
Taiwan
HFX-165
TW
5. When touching the [. TUNE –] sensor again, the MC ver-
sion is displayed on the liquid crystal display.
6. Each time [. TUNE –] sensor is touched, the display
changes MCS version, MTK version, GC version, USBL ver-
sion, CD version, CDMA version, CDMB version, ST version,
TA version and TM version this order, and returns to the MC
version display.
sion, CD version, CDMA version, CDMB version, ST version,
TA version and TM version this order, and returns to the MC
version display.
7. When touching the [x] sensor while the MC version is dis-
played, year, month and day of the software creation is dis-
played. When touching the [x] sensor again, the display re-
turns to the MC version display.
played. When touching the [x] sensor again, the display re-
turns to the MC version display.
8. In the state of step 3, when touching the [TUNE + >] sen-
sor, “K 0” is displayed on the liquid crystal display.
9. Each time a sensor is touched and a button is pressed, “K”
value increases. However, once a sensor is touched and a but-
ton is pressed, it is no longer taken into account.
ton is pressed, it is no longer taken into account.
When touching the all sensors and pressing the all buttons, dis-
play becomes “K12”.
play becomes “K12”.
Releasing method:
Touch the [u] sensor and press the [VOL +] button simultane-
ously for fi ve seconds.
Touch the [u] sensor and press the [VOL +] button simultane-
ously for fi ve seconds.
Ver. 1.2
CMT-V50iP
30
DISC SLOT LOCK MODE
It can be unable to take sample disc out of disc slot in the shop.
It can be unable to take sample disc out of disc slot in the shop.
Procedure:
1. Press the [
1. Press the [
?
/
1
] button to turn the power on.
2. Touch the [FUNCTION] sensor to turn the CD function.
3. Insert a disc in the unit.
4. Touch the [x] sensor and press the [Z] button simultaneously
3. Insert a disc in the unit.
4. Touch the [x] sensor and press the [Z] button simultaneously
for fi ve seconds.
5. The message “LOCKED” is displayed on the liquid crystal
display and the disc slot is locked.
(Even if pressing the [
Z
] button, the message “LOCKED”
is displayed on the liquid crystal display and the disc slot is
locked)
locked)
Releasing method:
1. Touch the [x] sensor and press the [Z] button simultaneously
1. Touch the [x] sensor and press the [Z] button simultaneously
for fi ve seconds.
2. The message “UNLOCKED” is displayed on the liquid crystal
display and the disc slot is unlocked.
DISC FORCE EJECT
It can eject a disc from unit forcedly.
It can eject a disc from unit forcedly.
Procedure:
1. Press the [
1. Press the [
?
/
1
] button to turn the power on.
2. Press the [Z] button for fi ve seconds.
AM STEP CHANGE (Except AEP and Russian models)
It can change AM step interval into 9 kHz or 10 kHz.
It can change AM step interval into 9 kHz or 10 kHz.
Procedure:
1. Press the [
1. Press the [
?/1
] button to turn the power on.
2. Touch the [FUNCTION] sensor to turn the AM function.
3. Press the [
3. Press the [
?/1
] button to turn the power off.
4. Press two buttons of the [VOL +] and [
?/1
] simultaneously.
5. The message “STEP 9k” → “AM 531” or “STEP 10k” →
“AM 530” is displayed on the liquid crystal display, and AM
step interval changed.
step interval changed.
Ver. 1.2
CMT-V50iP
CMT-V50iP
31
31
SECTION 4
ELECTRICAL CHECKS
TUNER SECTION 0 dB = 1 V
FM TUNE LEVEL CHECK
signal
generator
unit
Procedure:
1. Press the [
1. Press the [
?
/
1
] button to turn the power on.
2. Input the following signal from signal generator to FM antenna
input directly.
Carrier frequency : A = 87.5 MHz, B = 98 MHz, C = 108 MHz
Deviation
Deviation
: 75 kHz
Modulation
: 1 kHz
ANT input
: 35 dBu (EMF)
Note: Use 75 ohm coaxial cable to connect signal generator and the unit.
You cannot use video cable for checking.
Use signal generator whose output impedance is 75 ohm.
3. Set to FM tuner function and tune A, B and C signals.
4. Confi rm “TUNED” is lit on the display for A, B and C signals.
4. Confi rm “TUNED” is lit on the display for A, B and C signals.
When the selected station signal is received in good condition,
“TUNED” is displayed.
“TUNED” is displayed.
CD SECTION
Note:
1. CD block is basically constructed to operate without adjustment.
2. Use YEDS-18 disc (Part No. 3-702-101-01) unless otherwise indicat-
1. CD block is basically constructed to operate without adjustment.
2. Use YEDS-18 disc (Part No. 3-702-101-01) unless otherwise indicat-
ed.
3. Use an oscilloscope with more than 10 M
impedance.
4. Clean the object lens by an applicator with neutral detergent when the
signal level is low than specifi ed value with the following check.
RF SIGNAL CHECK
+
–
–
MAIN board
JL617 (RF)
JL612 (VC)
oscilloscope
(DC range)
Procedure:
1. Connect the oscilloscope to JL617 (RF) and JL612 (VC) on
1. Connect the oscilloscope to JL617 (RF) and JL612 (VC) on
the MAIN board.
2. Press the [
?
/
1
] button to turn the power on.
3. Touch the [FUNCTION] sensor to turn the CD function.
4. Insert the disc (YEDS-18) in the unit and touch the [
4. Insert the disc (YEDS-18) in the unit and touch the [
u
] sen-
sor to playback.
5. Confi rm that oscilloscope waveform is as shown in the fi gure
below. (eye pattern)
A good eye pattern means that the diamond shape (
) in the
center of the waveform can be clearly distinguished.
VOLT/DIV: 200 mV
TIME/DIV: 500 ns
level: 1.05 ± 0.45 Vp-p
Connection Location:
– MAIN Board (Side A) –
JL612
(VC)
JL617
(RF)
CMT-V50iP
CMT-V50iP
32
32
SECTION 5
DIAGRAMS
5-1. BLOCK DIAGRAM - CD/USB Section -
2
3
REG5
+9V
PREVCC
39 REGVAR
FOCUS/TRACKING COIL DRIVE,
SPINDLE/SLED/LOADING MOTOR DRIVE,
REGULATOR
IC801
13 I2C_SDA
12 I2C_SCL
12 I2C_SCL
4 RESET
EEPROM
IC506
SYSTEM CONTROLLER
IC103 (1/3)
: CD PLAY
: AUDIO IN
: iPod/iPhone/iPad
SIGNAL PATH
: USB
OPTICAL PICK-UP BLOCK
(CMS-S76RFS3G)
MS-486 BOARD
RF AMP, SERVO/AUDIO PROCESSOR
IC501
VOA/A
RF
VC
ACLK
ASDATA0
ASDATA0, ABCK,
ALRCK, ACLK
ADIN
ABCK
ALRCK
123 RFIP
124 RFIN/OPOUT
124 RFIN/OPOUT
1 RF_C
VOB/B
128 RF_B
VOC/C
127 RF_A
VOD/D
2 RF_D
VOE/E+G
4 RF_F
VOF/F+H
3 RF_E
10 V20
LD (780)
14 LDO1
PD
13 MDI1
AUTOMATIC POWER
CONTROL (FOR CD)
Q606
CD ON
SWITCH
Q604 (1/2)
LD (650)
15 LDO2
MSW
VR (780)
38
+5V
PREVARVCC
125 IOPMON/OPINP
30
OPOUT
11 V14/VREFO
26
VCI
REG02
REG01
DVD ON
SWITCH
SWITCH
Q604 (2/2)
VR (650)
28 OPIN+
29 OPIN–
29 OPIN–
126 SPFG/OPINN
27
VSPDL
17 DMO
21
IN4
12 VO4+
13 VO4–
13 VO4–
VCC
SP+
SP–
SP–
18 FMO
22
IN3
10 VO3+
11 VO3–
11 VO3–
SL+
SL–
SL–
21 TRO
23
IN2
9 VO2–
8 VO2+
8 VO2+
TRK+
TRK–
TRK–
22 FOO
24
IN1
45 MUTE123
33
MUTE123
47
SDA
48
SCL
43
USB/IPOD SEL
50
IPOD CHARGER
73
IPOD DETECT
2 SO
5 SI
5 SI
SERIAL FLASH
IC502
31
SF_DO
24
USB_DM
25
USB_DP
106
ADIN
IPAD VBUS
118
ASDATA0
113
ABCK
117
ALRCK
112
ACLK
32
SF_DI
6 SCK
33
SF_CK
1 _CS
4 D+
5 D–
USB DATA SELECTOR
IC304
30
SF_CS#
RD0 – RD15
17 CAS
DQ0 – DQ15
RA0 – RA11
A0 – A11
18 RAS
SD-RAM
IC504
82
CAS#
83
RAS#
15 LDQM
61
DQM0
39 UDQM
70
DQM1
20 BA0
21 BA1
21 BA1
85
BA0
86
BA1
38 CLK
72
RCLK
16 WE
80
RWE#
19 MUTE4
34
MUTE4
23 TSD_M
35
TSDM
7 VO1–
6 VO1+
6 VO1+
FCS+
92 CDM FWD
19
FWD
93 CDM RVS
90 CDM UNLOAD END SW
89 CDM LOAD END SW
91 CDM LOAD SW
20
RVS
14 VO5+
15 VO5–
15 VO5–
FCS–
LOAD+
LOAD–
LOAD–
LOAD_SW
LOAD_END_SW
UNLOAD_END_SW
5V
20 MSW
AUTOMATIC POWER
CONTROL (FOR DVD)
Q605
40
1
IFSDI
MTK DOUT
35
100
IFSDO
MTK DIN
34
2
IFSCK
MTK CLK
42
6
IFCS#
MTK CS
41
4
IFBSY
MTK BUSY
43
7
MFISW
MTK IP
SEL
38
3
PRST#
MTK RESET
8
XTALO
7
XTALI
X501
27MHz
Q603
4
6
USB D+
USB D–
30
DGND
CN1501
iPod/iPhone/iPad
CONNECTOR
3
2
D+
D–
CN1101
14
1D+
11
2D+
12
1D–
10
2D–
3
S
7
OE
3 B1
6 B2
USB DATA SWITCH
IC309
2
A1
5
A2
1
OE1
7
OE2
3 B1
6 B2
iPod/iPhone/iPad
CHARGER SWITCH
IC308
2
A1
5
A2
1
OE1
7
OE2
Q303
(US, CND, AUS)
(EXCEPT US, CND, AUS)
Abbreviation
: Australian model
AUS
: Canadian model
CND
(EXCEPT US, CND, AUS)
>001B
>002B
(Page 33)
(Page 33)
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