Sony ZS-XN30 Service Manual ▷ View online
13
ZS-XN30
SECTION 4
ELECTRICAL ADJUSTMENTS
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter
T1
450 kHz
AM VCO VOLTAGE ADJUSTMENT
Adjustment Part
Frequency Display
Reading on Digital Voltmeter
L4
530 kHz
1.0
± 0.05 V
Confirmation
1,710 kHz
5.3
± 0.7 V
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L3
620 kHz
CT3
1,400 kHz
FM IF ADJUSTMENT
Adjust for a minimum reading on level meter
T2
10.7 MHz
FM VCO VOLTAGE ADJUSTMENT
Adjustment Part
Frequency Display
Reading on Digital Voltmeter
L2
108 MHz
3.0
± 0.3 V
Confirmation
87.5 MHz
1.3
± 0.4 V
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L1
87.5 MHz
CT1
108 MHz
Adjustment and Connecting Location:
TUNER and AUDIO boards (See page 14)
TUNER and AUDIO boards (See page 14)
TUNER SECTION
0 dB=1
µ
V
[AM]
Setting:
Function: RADIO
Band: AM
Function: RADIO
Band: AM
[FM/TV/WEATHER]
Setting:
Function: RADIO
BAND button: FM
Function: RADIO
BAND button: FM
• Repeat the procedures in each adjustment several times, and the
tracking adjustments should be finally done by the trimmer ca-
pacitors.
pacitors.
• Remove FM antenna in FM adjustment.
AM RF signal
generator
30% amplitude
modulation by
400 Hz signal
Output level:
as low as possible
modulation by
400 Hz signal
Output level:
as low as possible
Put the lead-wire
antenna close to
the set.
antenna close to
the set.
+
–
–
level meter
set
8
Ω
AUDIO board
CN304 pin
CN304 pin
2
AUDIO board
CN304 pin
CN304 pin
1
FM RF signal
generator
22.5 kHz frequency
deviation by 400 Hz
signal
Output level:
as low as possible
deviation by 400 Hz
signal
Output level:
as low as possible
+
–
–
level meter
AUDIO board
CN304 pin
CN304 pin
2
AUDIO board
CN304 pin
CN304 pin
1
set
8
Ω
0.01
µ
F
TUNER board
TP (GND)
TP (GND)
TUNER board
TP (ANT)
TP (ANT)
digital voltmeter
TP (VT)
TP (GND)
100 k
Ω
TUNER board
14
ZS-XN30
L4
AM VCO Voltage Adjustment
L2
FM VCO Voltage Adjustment
FM Tracking Adjustment
T1 AM IF Adjustment
T2 FM IF Adjustment
L1
CT1
CT1
AM Tracking Adjustment
L3
CT3
– TUNER Board (Component Side) –
Adjustment and Connecting Location:
TP
(VT)
TP
(GND)
TP
(ANT)
– TUNER Board (Conductor Side) –
– AUDIO Board (Conductor Side) –
CN304
2 1
ZS-XN30
15
15
CD SECTION
Perform all CD section check in the test mode.
HOW TO THE SET INTO CD TEST MODE
1. Press the
[POWER]
button to turn the power on.
2. Press the
x
button.
3. Set test mode by momentarily shorting both of TAP (TEST)
on the CONTROL board to enter the CD test mode.
4. Press the
u
button, and press the
x
button to enter the
STOP2 mode.
Note:
When the following figure is displayed accidentally, release from
the CD test mode and redo operation.
the CD test mode and redo operation.
5. To release the CD test mode, press the
x
button, and turn the
power off.
Checking Location:
TRAVERSE CHECK
1. Connect an oscilloscope to TP (TE) and TP (VC) on the CD
board.
2. Insert the disc (PATD-012). (Part No.: 4-225-203-01)
3. In the STOP2 mode, press the
3. In the STOP2 mode, press the
u
button to enter the FO-
CUS1 mode.
4. Confirm that the center of the oscilloscope waveform is at 0 V.
5. Confirm that the oscilloscope waveform Vp-p value is at 0.35
5. Confirm that the oscilloscope waveform Vp-p value is at 0.35
to 1.1 V.
FOCUS BIAS CHECK
1. Connect the oscilloscope to TP (RF) and TP (VC) on the CD
board.
2. Insert the disc (PATD-012). (Part No.: 4-225-203-01)
3. In the STOP2 mode, press the
3. In the STOP2 mode, press the
u
button two times to enter
the ALL SERVO mode.
4. Confirm that the oscilloscope waveform is as shown in the
figure below. (eye pattern)
A good eye pattern means that the diamond shape (
A good eye pattern means that the diamond shape (
◊) in the
center of the waveform can be clearly distinguished.
•
RF signal reference waveform (eye pattern)
VOLT/DIV: 0.2 V (with the 10: 1 probe in use.)
TIME/DIV: 200 ns
TIME/DIV: 200 ns
0.6 to 1.2 Vp-p
When observing the eye pattern, set the oscilloscope
for AC range and raise vertical sensitivity.
for AC range and raise vertical sensitivity.
VOLT/DIV: 0.2 V (with the 10:1 probe in use)
TIME/DIV : 1 ms
TIME/DIV : 1 ms
0 V
Vp-p
88
LCD display:
82
LCD display:
81
LCD display:
– CONTROL Board (Conductor Side) –
TAP
(TEST)
F-
LCD display:
P-
LCD display:
– CD Board (Conductor Side) –
TP
(VC)
TP
(TE)
TP
(RF)
IC702
Checking Location:
ZS-XN30
16
16
C
D
E
F
LD
VC
VCC
10
B
11
A
12
13
14
9
16
15
CD +3.3V
GND
PD
VR
FOCUS
COIL
TRACKING
COIL
RF AMP, FOCUS/TRACKING
ERROR AMP
IC701
OPTICAL PICK-UP
BLOCK
(KSS-213R)
VC
27
A
6
B
7
C
8
D
9
E
10
F
11
LD
1
PD
2
COIL/MOTOR DRIVE
IC704
F+
13
F–
12
T+
2
T–
1
SL+
16
SL–
17
M701
(SLED)
M702
(SPINDLE)
SP+
26
SP–
27
F+
F-
T+
T-
9
10
5
4
20
SFDR
19
SRDR
TFDR
TRDR
FFDR
FRDR
24
SPIN
15
MUTE
MDP
103
SRDR
99
SFDR
100
TRDR
97
TFDR
98
FRDR
95
FFDR
96
CD DSP
IC702
RFAC
84
29
RFDCI
28
RFDC
16
FE
17
FEI
12
SW
RFDC
88
FE
92
TE
90
SE
91
109
PCMDI
21
DATA
R-CH
20
CLOK
23
XLAT
27
SCOR
28
XRST
DATAO
18
CLKO
20
XLATO
16
24
XSOE
XSOEO
17
SCORI
14
22
SENS
SENSIN
19
65
FOK
FOKI
13
69
GFS/MNT2/
XROF
GFSI
15
SYSTEM CONTROLLER
IC801 (1/2)
15
RF AC
18
TE
MP3 DECODER
IC703
PCMDO
15
111
BCKI
BCKO
13
107
LRCKI
LRCKO
14
108
PCMD
PCMDI
4
110
BCK
BCKI
2
51
AOUT1
56
AOUT2
106
LRCK
LRCKI
1
18
XRDE
XRDE
12
47
XTAI
48
XTAO
XTAL
30
EXTAL
29
40
SDOUT
SDIN
38
SDCLKI
42
SDXLATI
33
NRSTI
37
RDENO
41
SDIN
SDOUT
85
SDCLKO
XWAKEO
83
84
SDXLATO
90
RDENI
86
34
88
NRSTO
87
LDONO
9
XWAKEI
PWM RF
5
PWM TE
6
PWM FE
8
RW/ROM
4
X701
16.9344MHz
S701
(LIMIT)
X702
22.58MHz
XRSTO
12
AUTOMATIC
POWER CONTROL
Q701, 702
M
M
CD-L
A
• SIGNAL PATH
: CD PLAY
• R-ch is omitted due to same as L-ch.
101
SSTP
37 CD DOOR
S801
CD LID
OPEN/CLOSE
DETECT
D0
D3
D3
A0
A10
XRAS
5
D-RAM
IC705
2 XWE
9 XCAS
1 XRAS
9 XCAS
1 XRAS
A0
A10
2
3
3
22
23
23
.
.
.
XWE
4
XCAS 21
D0
D3
D3
17
15
13
15
13
.
11
.
116
113
113
.
117
8
11
14
14
.
19
7
.
4
3
6
5
3
6
5
.
.
.
SECTION 5
DIAGRAMS
5-1.
BLOCK DIAGRAM – CD SERVO Section –
(Page 18)
Click on the first or last page to see other ZS-XN30 service manuals if exist.