Sony HCD-XB4K / LBT-XB4K / LBT-XB4KS Service Manual ▷ View online
– 37 –
IC103
CNU102
IC101
ICI02
RF
FOK
VC
FEO
TEO
GND
CNU101
E-F Balance (1 Track Jump) check
(Without remote commander)
(Without remote commander)
Adjustment Location:
[BD BOARD] (Conductor Side)
Center of the waveform
B
level : 500 mV
±
100 mVp-p
symmetry
A (DC voltage)
0V
A – B
2 (A + B)
×
100 = ±7 (%)
1 track jump waveform
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. (Becomes the 1 track jump
mode)
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:
BD board
TP (TEO)
TP (VC)
TP (VC)
oscilloscope
+
–
–
– 38 –
SECTION 6
DIAGRAMS
•
Circuit Board Location
TRANS board
PANEL board
POWERAMP
board
board
TC-B SW board
CD-B1 SW board
CD-B2 SW board
CD-A SW board
LED board
TC-A SW
board
board
HEADPHONE-MIC
board
board
CD MOTOR board
BD LED board
AUDIO board
BD board
LEAF SWITCH
board
board
MOTOR board
DOOR SW board
MAIN board
TABLE SENSOR board
KEY CON board
TCB board (Except Thailand)
ENCAPSULATED COMPONENT (Thailand)
ENCAPSULATED COMPONENT (Thailand)
– 39 –
•
Waveforms
— BD Section—
1
IC101
#£
pin (PLAY MODE)
Approx. 1.3 Vp-p
2
IC101
2
pin (FEI) (PLAY MODE)
5.6 V
135.5
µ
sec
7
IC103
&¢
pin (WFCK)
4.6 Vp-p
31.3
µ
sec
4.8 Vp-p
222 nsec
!£
IC2
@£
pin (VCO)
4.8 Vp-p
2.2 nsec
6
IC103
^™
pin (RFCK)
!¡
IC301
!£
pin (XT2)
— TUNER Section—
!™
IC1
@¢
pin (XOUT)
5
IC103
^º
pin (XPCK)
3
IC101
$¶
pin (TEI) (PLAY MODE)
— PANEL Section—
9
IC601
8
pin (X-OUT)
7 V
230 nsec
4
IC103
@¶
pin (MDP)
8
IC103
*ª
pin (XTAI)
— MAIN Section—
0
IC301
0
pin (X2)
5.7 V
200 nsec
2.4 V
7.8
µ
sec
2.1 V
125 nsec
Approx. 0.2 V
Approx. 0.1 V
10 V
59.8 nsec
– 40 –
TM1
ANTENNA
FM 75
Ω
AM
ANT IN
IF OUT
F OUT
VT
FE1
FM FRONT END
ST +10V
IF AMP
Q1,2
IF AMP
Q3,4
CF1
10.7MHz
CF2
10.7MHz
1
FM IN
4
27
19
15
10
REG
29 AM OSC
AM RF IN
FM
FM OSC
PD1
RV41
FM
TUNED
LEVEL
3
4
5
6
30
14 15 11
FM SD
AM / FM
VCO STOP
IF BUFF
MUTE
23
9
5
13
12
2
AM
SD
AM
SD
AM MIX
AM IF
IFT41
X43
450KHz
X41
456KHz
X42
10.7MHz
TUNED
LEVEL
AM
RV42
AMP IN L
AMP OUT L
MPX IN
OUT L
OUT R
AM / FM
8
7
ST LED
TUNED
STEREO
TUNED
LPF
RCH
IC2
FM / AM MPX
24
22
20
21
18
16
14
7
2 12 8
1 24
AM OSC
FM
VCO STOP
IF
IF REQ
X IN
X OUT
CE
DI
CL
DO
MUTE
ST-CE
COM-DIN
COM-CLK
COM-DATA
B
A
MAIN SECTION
(page 43)
(page 43)
PLL
IC1
FE2
AM FRONTEND
Q5
3
7
9
13
14
ANT IN
B+
F OUT
RF OUT
VT
X21
4.5MHz
•
R CH:Same as L CH
•
SIGNAL PATH
:FM
:AM
AM IF
DET
VCO
MAIN
SECTION
(page 44)
66
65
67
68
70
72
69
6-1.
BLOCK DIAGRAMS
– TUNER SECTION –
HCD-XB4K
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