Sony HCD-XB8 / LBT-XB8AV / MDS-B5 Service Manual ▷ View online
— 17 —
E-F Balance (1 Track Jump) check
oscilloscope
BD board
TP (TEO)
TP (VC)
TP (VC)
Procedure:
1. Connect oscilloscope to test point TP (TEO) on BD board.
2. Turned Power switch on.
3. Put disc (YEDS-18) in to play the number five track.
4. Press the “
1. Connect oscilloscope to test point TP (TEO) on BD board.
2. Turned Power switch on.
3. Put disc (YEDS-18) in to play the number five track.
4. Press the “
P (Pause)” button.
5. Check the level B of the oscilloscope's waveform and the A (DC
voltage) of the center of the Traverse waveform.
Confirm the following:
Confirm the following:
• x 100 = less then ± 7 (%)
• A + B = 500 ± 100 mVp-p
A – B
2 (A + B)
1 track jump waveform
0V
Center of the waveform
B
A (DC voitage)
Symmetry
level : 500 mV ± 100 mVp-p
Adjustment Location:
[BD BOARD] (Conductor Side)
TP (RF)
TP
(FOK)
(FOK)
TP
(VC)
IC101
TP
(TEO)
(TEO)
TP
(FEO)
(FEO)
TP
(GND)
(GND)
IC103
IC102
CN101
IC102
SECTION 6
DIAGRAMS
6-1. CIRCUIT BOARDS LOCATION
PANEL board
TRANS board
SURROUND board
MAIN board
POWER board
CD-B1 SW board
CD-B2 SW board
TC-B SW board
DOOR SW board
CD-LED board
TC-A SW board
HP/MIC board
LEAF SWITCH board
BD board
LED board
CD MOTOR board
TABLE SENSOR board
— 18 —
CD-A SW board
TCB board (AEP, UK, East European, CIS)
FM/AM TUNER PACK
(ENCAPSLATED COMPONENT)
(EXCEPT AEP, UK, East European,
CIS)
(ENCAPSLATED COMPONENT)
(EXCEPT AEP, UK, East European,
CIS)
AUDIO board
(including
(including
p
A)
p
A
MOTOR board
Note:
pA is including in AUDIO board.
— 19 —
— 20 —
HCD-XB8
TM1
AM
ANTENNA
FM 75
Ω
COAXIAL
ANT IN
ST +10V
Q5
VT
FE1
FM FRONT END
IF OUT
CF1
10.7MHz
IF AMP
Q1, 2
CF2
10.7MHz
IF AMP
Q3, 4
CF3
10.7MHz
1 FM IN
REG
FM/AM MPX
IC41
17
10
09
PLL
IC21
11
FM
TUNED
LEVEL
15 11
30
14
RV42
2 12
14
7
8
13
X42
450kHz
D41
FM SD
AM/FM
VCO STOP
IF BUFF
MUTE
AM
SD
AM
TUNED
LEVEL
12
RV41
2
AM IF
IFT1
5
9
23
AM IF
DET
VCO
STEREO
TUNED
8
7
X43
456kHz
X41
10.7MHz
MUTE
STEREO
TUNED
24
22
AM/FM
MPX IN
20
21
OUT L
OUT R
LPF
RCH
18 AMP IN L
AMP
OUT
L
16
ST L
4
5
5
3
ST-CE
COM-DIN
COM-CLK
COM-DATA
A
MAIN
SECTION
CE
DI
CL
DO
1 24
X21
4.5MHz
AM MIX
AM
SD
6
4
5
2
15
17
16
14
12
13
29
26 25 24 23
22
21 20
9
LW SW
Q9
27
FE2
MW/LW FRONTEND
Q11
MW
SW
MW
SW
Q12
MW
SW
MW
SW
Q14
LW SW
Q13
MW
SW
MW
SW
AM OSC
AM RF IN
• R CH: Same as L ch
• SIGNAL PATH
: FM
: MW
• SIGNAL PATH
: FM
: MW
RDS DATA
RDS INT
(Page 27)
6
FM
VT1
MW
MW
AM OSC
FM
VCO STOP
FM/AM IF
IF REQ
XIN
XOUT
3
4
13
14
2
16
IC1751
RDS DECODER
IC1752
X1751
4.332MHz
5
7
6-2. BLOCK DIAGRAMS
— TUNER SECTION — (AEP, UK model)
— 21 —
— 22 —
HCD-XB8
22 MPX IN
20
OUT L
LPF
18
AMP
IN
L
AMP
OUT
L
16
4
5
5
3
6
ST-CE
COM-DIN
COM-CLK
COM-CLK
COM-CLK
A
MAIN
SECTION
CE
DI
CL
CL
DO
• R CH: Same as L ch
• SIGNAL PATH
: FM
: MW
• SIGNAL PATH
: FM
: MW
D42
D43
13
LW/SW
SUB CARRIER
PEAK
L1701
CT1701
TP1701
2
3
20
RV1701
SUB CARRIER
LEVEL
7
6
9
10
POLAR
DECODER
IC1701
IN
POUT
L OUT
R OUT
SUB IN
MON
VCO
ST IND
VCO
STOP
18
17
R CH
3
5
POLAR/PILOT
SWITCH
IC1702
4
9 11
C0
C1
C. COM
C
A
A. COM 14
R CH
SWITCH
Q1701
SWITCH
Q1702
SWITCH
Q1703
D1704
D1703
D1701
D1702
ST-L
STEREO
TUNED
MUTE
TP1702
RV1702
VCO
(Page 27)
TM1
AM
ANTENNA
FM 75
Ω
COAXIAL
ANT IN
ST +10V
Q5
VT
FE1
FM FRONT END
IF OUT
CF1
10.7MHz
IF AMP
Q1-4
CF3
10.7MHz
1 FM IN
REG
FM/AM MPX
IC41
17
10
09
PLL
IC21
11
FM
TUNED
LEVEL
15 11
30
14
RV42
2 12
14
7
8
13
X42
450kHz
D41
FM SD
AM/FM
VCO STOP
IF BUFF
MUTE
AM
SD
AM
TUNED
LEVEL
12
RV41
2
AM IF
IFT1
5
9
23
AM IF
DET
VCO
STEREO
TUNED
8
7
X43
456kHz
X41
10.7MHz
24
AM/FM
1 24
X21
4.5MHz
AM MIX
AM
SD
6
4
5
2
15
17
16
14
12
13
29
26 25 24 23
22
21 20
9
LW SW
Q9
27
FE2
MW/LW FRONTEND
Q11
MW
SW
MW
SW
Q12
MW
SW
MW
SW
Q14
LW SW
Q13
MW
SW
MW
SW
AM OSC
AM RF IN
FM
VT1
MW
MW
AM OSC
FM
VCO STOP
FM/AM IF
IF REQ
XIN
XOUT
3
— TUNER SECTION — (East European, CIS model)
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