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Model
CMT-HX50BTR CMT-HX70BTR CMT-HX80R CMT-HX90BTR HCD-HX50BTR HCD-HX70BTR HCD-HX80R HCD-HX90BTR
Pages
82
Size
7.35 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
cmt-hx50btr-cmt-hx70btr-cmt-hx80r-cmt-hx90btr-hcd-.pdf
Date

Sony CMT-HX50BTR / CMT-HX70BTR / CMT-HX80R / CMT-HX90BTR / HCD-HX50BTR / HCD-HX70BTR / HCD-HX80R / HCD-HX90BTR Service Manual ▷ View online

HCD-HX50BTR/HX70BTR/HX80R/HX90BTR
13
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.
Procedure:
1.  Press three buttons of [
x
/CANCEL], [DSGX] and [
?
/
1
] si-
multaneously.
2.  The system is reset and becomes standby states.
COMMON  TEST  MODE
This mode is used to check operations of amplifi er.
Procedure:
1.  Press the [
?
/
1
] button to turn the power on.
2.  Press three buttons of [
x
/CANCEL], [ENTER] and  [
Z
] si-
multaneously.
3.  When the COMMON test mode is activated, “AUDIO IN” 
is displayed on the fl uorescent indicator tube and “c PLAY 
SLEEP” blink on the fl uorescent indicator tube.
4.  Each time [EQ] button on the remote commander is pressed, 
the display changes starting “TONE MAX”, “TONE MIN” 
and “TONE FLAT” this order.  
5.  Turn the [VOLUME] knob counterclockwise, “VOLUME 
MIN”  is displayed on the fl uorescent indicator tube. Turn the 
[VOLUME] knob clockwise, “VOLUME MAX”  is displayed 
on the fl uorescent indicator tube.
6.  To release this mode, press the [
?
/
1
] button.
PANEL  TEST  MODE
This mode is used to check the fl uorescent indicator tube, LED, 
model, destination, software version and key.
Procedure:
1.  Press the [
?
/
1
] button to turn the power on.
2.  Press three buttons of [
x
/CANCEL], [DSGX] and  [
Z
] simul-
taneously.
3.  All segments on the fl uorescent indicator tube, [STANDBY] 
LED and [BLUETOOTH OPR] LED (HX50BTR/HX70BTR/
HX90BTR only) light up. 
4.  Press the [DSGX] button, the model and destination are dis-
played on the fl uorescent indicator tube.
5.  Press the [DSGX] button again, MC version is displayed on 
the fl uorescent indicator tube.
6.  Each time [DSGX] button is pressed, the display changes 
starting from MC version, GC version, USBL version , USBM 
version, BT version (HX50BTR/HX70BTR/HX90BTR only), 
CLA version, CD version, CDD version, CDMA version, 
CDMB version, BDA version, BDB version, ST version, TA 
version and TM version this order, and returns to the MC ver-
sion display. 
7.  When [SEARCH] button is pressed while the MC version is 
displayed, year, month and day of the software creation is dis-
played. When [SEARCH] button is pressed again, the display 
returns to the MC version display. 
8.  Press the [ENTER] button, the key test mode is activated and 
“K 0 V0” is displayed on the fl uorescent indicator tube.
9.  Each time a button is pressed, “K” value increases. However, 
once a button is pressed, it is no longer taken into account.
 
All keys are pressed, display becomes “K17” (HX80R) or 
“K18” (HX50BTR/HX70BTR/HX90BTR).
10. “V” value increases 2, 4, 6 ... if turn the [VOLUME] knob 
clockwise, or it decreases 8, 6, 4 ... if turn the knob counter-
clockwise 
11.  To release this mode, press three buttons in the same manner as 
step 2, or disconnect the power cord.
TUNER STEP CHANGE
(HX50BTR: Canadian, Chilean, Peruvian, Mexican, Bra-
zilian, Singapore, Argentina and Korean models)
A step of AM tuning interval can be changed over between 9 kHz 
or 10 kHz.
Procedure:
1.  Press the [
?
/
1
] button to turn the power on.
2.  Press the [TUNER/BAND] button to select “AM”.
3.  Press the [
?
/
1
] button again to turn the power off.
4.  Press two buttons of [TUNER/BAND] and [
?
/
1
] simultane-
ously.
5.  The message “AM 9kHz Step” or “AM 10kHz Step” is dis-
played on the fl uorescent indicator tube and thus the tuning 
interval is changed over.
CD  SHIP  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.
Procedure:
1.  Press the [
?
/
1
] button to turn the power on.
2.  Press the [FUNCTION] button to select “CD”.
3.  Press two buttons of [SEARCH] and [
?
/
1
] simultaneously.
4.  After the “STANDBY” display blinks, “LOCK” is displayed 
on the fl uorescent indicator tube, the ship mode is set.
CD  SHIP  MODE  &  MEMORY  CLEAR
This mode is used to perform CD ship mode and cold reset simul-
taneously.
Procedure:
1.  Press the [
?
/
1
] button to turn the power on.
2.  Press three buttons of [SEARCH], [DSGX] and [
?
/
1
] simulta-
neously.
3.  After the “STANDBY” display blinks, “LOCK” is displayed 
on the fl uorescent indicator tube the ship mode is set and the 
system is reset.
ANTITHEFT  LOCK  MODE
This mode is used to unable to take sample disc out of disc tray in 
the shop.
Procedure:
1.  Press the [
?
/
1
] button to turn the power on.
2.  Press the [
Z
] button to open the disc tray and set the CD disc.
3.  Press the [
Z
] button to close the disc tray.
4.  Press two buttons of [
x
/CANCEL] and [
Z
] for 5 seconds.
5.  The message “LOCKED” is displayed on the fl uorescent indi-
cator tube and the disc tray is locked. (Even if pressing the [
Z
button, the message “LOCKED” is displayed on the fl uores-
cent indicator tube and the disc tray is locked)
6.  To release from this mode, press two buttons of [
x
/CANCEL] 
and [
Z
] for 5 seconds.
7.  The message “UNLOCKED” is displayed on the fl uorescent 
indicator tube and the disc tray is unlocked.
CD  POWER  MANAGE
This mode is used to changed over CD power on/off for decreasing 
of reception noise in the tuner mode.
Procedure:
1.  Press the [
?
/
1
] button to turn the power on.
2.  Press the [FUNCTION] button to select “CD”.
3.  Press the [
?
/
1
] button again to turn the power off.
4.  Press two buttons of [
x
/CANCEL] and [
?
/
1
] simultaneously.
5.  The message “CD POWER ON” or “CD POWER OFF” is dis-
played on the fl uorescent indicator tube, and CD power on/off 
is changed over in the tuner mode.
Ver. 1.1
HCD-HX50BTR/HX70BTR/HX80R/HX90BTR
14
CD  SERVICE  MODE
This mode can run the CD sled motor freely. Use this mode, for 
instance, when cleaning the optical pick-up.
Procedure:
1.  Press the [
?
/
1
] button to turn the power on.
2.  Press the [FUNCTION] button to select “CD”.
3.  Press three buttons of [SEARCH], [  +] and [
Z
] simultane-
ously, the message “SERVICE MODE” is displayed on the 
fl uorescent indicator tube.
4.  Press the [  –] button to move the optical pick-up to inside 
track and the message “SLED IN” is displayed on the fl uores-
cent indicator tube, or press the [  +] button to outside track 
and the message “SLED OUT” is displayed on the fl uorescent 
indicator tube.
5.  Press the [DSGX] button, “LD ON” or “LD OFF” is displayed  
on the fl uorescent indicator tube. Each time [DSGX] button is 
pressed, laser diode on/off is changed over.
6.  To release this mode, press the [
?
/
1
] button.
BT  TEST  MODE
(XH50BTR/HX70BTR/HX90BTR)
This mode is used to check the fi rmware version and address of 
bluetooth module.
Procedure:
1.  Press the [
?
/
1
] button to turn the power on.
2.  Press the [FUNCTION] button to select “BLUETOOTH”.
3.  Press three buttons of [SEARCH], [FUNCTION] and [BLU-
TOOTH OPR] simultaneously, the message “BT Test” is dis-
played on the fl uorescent indicator tube. Then, the display is 
automatically changed to the fi rmware version of bluetooth 
module.
4.  Press the [DISPLAY] button on the remote commaner, address 
of bluetooth module is displayed on the fl uorescent indicator 
tube.
5.  To release this mode, press the [
?
/
1
] button.
HCD-HX50BTR/HX70BTR/HX80R/HX90BTR
HCD-HX50BTR/HX70BTR/HX80R/HX90BTR
15
15
SECTION  5
ELECTRICAL  CHECKS
FM  TUNE  LEVEL  CHECK
signal
generator
set
Procedure:
1.  Turn on the set.
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  
:75  kHz
Modulation 
: 1 kHz
ANT input 
: 35 dBu (EMF)
Note:  Use 75 ohm coaxial cable to connect signal generator and the set. 
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 sig-
nals.
When the selected station signal is received in good condition, 
“TUNED” is displayed.
Note:
1.  CD Block is basically constructed to operate without adjust-
ment.
2.  Use YEDS-18 disc (3-702-101-01) unless otherwise indicat-
ed.
3.  Use an oscilloscope with more than 10 M
Ω impedance.
4.  Clean the object lens by an applicator with neutral detergent 
when the signal level is low than specifi ed value with the fol-
lowing checks.
5.  Check the focus bias check when optical pick-up block is re-
placed.
FOCUS  BIAS  CHECK
+
CD board
TP121 (RFI)
TP124 (VC)
oscilloscope
(DC range)
Procedure:
1.  Connect oscilloscope to TP121 (RFI) and TP124 (VC) on the 
CD board.
2.  Press the [
?
/
1
] button to turn the power on.
3.  Set disc (YEDS-18) on the disc tray and press the [CD 
u
button to playback.
4. 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:
1.2 ± 0.3 Vp-p
Checking Location:
TUNER  SECTION
CD  SECTION
TP124
(VC)
– CD Board (Conductor Side) –
TP121
(RFI)
IC101
HCD-HX50BTR/HX70BTR/HX80R/HX90BTR
HCD-HX50BTR/HX70BTR/HX80R/HX90BTR
16
16
SECTION  6
DIAGRAMS
6-1.  BLOCK  DIAGRAM  - CD SERVO Section -
SYSTEM CONTROLLER
IC301 (1/5)
CD-MP3 PROCESSOR
IC101
MUTE
2-AXIS
DEVICE
(TRACKING)
(FOCUS)
95
89
A
AVDD
+3.3V
DETECTOR
FNi1 (A)
RFo
97 FPi1 (B)
88
2
AGCi
3
RFRP
RFZi
7
6
TEi
TEZi
83
RFEQo
81 RFi
82 RFRPi
30
LO
27
RO
65
AIN (PI4)
66
BCKi (PI5)
BCK
A-IN
BUS1
BUS0
BUS2
BUS3
BUCK
67
LRCKi (PI6)
LRCK
51
PIO3
GATE
49
PIO1
ST-REQ
38
BUS0
R-CH
94 FNi2 (C)
96 FPi2 (D)
100 TNi (E)
98 TPi (F)
91 LDo
92
MDi
2 VO1+
1 VO1–
13 DMO
AUTOMATIC
POWER CONTROL
Q301
LD
PD
LASER DIODE
OPTICAL PICK-UP
BLOCK
(KSM-213DCP)
B
C
D
E
F
12 FMO
10 TRo
9 FOo
20 IO0 (/HSO)
I-V AMP
M401
(SPINDLE)
M402
(SLED)
12 VO2–
11 VO2+
18 VO3+
17 VO3–
26 VO4+
27
7
IN4’ 24
IN3’ 20
IN2’ 9
IN1 3
BIAS 23
84 VRo
VO4–
M
M
FOCUS/TRACKING COIL DRIVE,
SLED/SPINDLE MOTOR DRIVE
IC401
S201
(LIMIT)
DVDD
+3.3V
24
XO
23
XI
X102
16.9344MHz
95 CD DRIVER MUTE
LOADING
MOTOR DRIVE
IC701
CDM LOAD IN 53
CDM LOAD OUT
CDM OPEN SW
CDM CLOSE SW
54
51
52
M
A
CD-L
B
DATA, CLOCK,
A-IN, BCK, LRCK,
GATE, ST-REQ 
C
BUS0 – BUS3,
BUCK, CCE, REQ
: CD PLAY
SIGNAL PATH
R-ch is omitted due to same as L-ch.
: USB
VCC
A
B
C
D
E
F
LD
PD
SP+
VC
SP–
SL+
SL–
T+
T–
F+
F–
1
2
3 CD BUS0
13
39
BUS1
4
3
2 CD BUS1
5
40
BUS2 (SO)
8
9
1 CD BUS2
23 CD CLK
6
41
BUS3 (SI)
11
10
100 CD BUS3
12
BUS SWITCH
IC754
1
2
13
4
3
5
8
9
6
11
10
12
BUS SWITCH
IC753
DATA SELECTOR
IC751
A/B
Q352
42
BUCK (CLK)
4
2
3
CCE
21 CD CCE
43
XCCE
54
SBSY
48
PIO0
7
7 MP3 IREQ
25 DEC BUS SEL
19 SBSY
37
XRST
94 CD XRST
5
REQ
6
12
14
13
9
10
11
1
S001
DISC TRAY
OPEN/CLOSE DETECT
OPEN
CLOSE
M001
(LOADING)
47
AOUT2 (PO5)
63
BCK (PO8)
CLOCK
DATA
(Page 18)
(Page 17)
(Page 17)
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