Cd Section - Sony ZS-X1 Service Manual

Adjustment and Connecting Location:
– TUNER BOARD (Component Side) (US, CND, SP, KR, AUS) –
L4
AM VCO Voltage Adjustment
L2
FM VCO Voltage Adjustment
CT3
AM Tracking Adjustment
L3
– TUNER BOARD (Component Side) (AEP, UK, IT, EE) –
L4
LW VCO Voltage Adjustment
L2
FM VCO Voltage Adjustment
CT3
LW Tracking Adjustment
L3-2
– TUNER BOARD (Conductor Side) –
TP
(VT)
TP
(GND)
T2 FM IF Adjustment
T1 AM IF Adjustment
L1
FM Tracking Adjustment
CT1
T2 FM IF Adjustment
T1 AM IF Adjustment
L1
FM Tracking Adjustment
CT1
CT3
MW Tracking Adjustment
L3-1
TP
(ANT)
• Abbreviation
AUS : Australian model
CND : Canadian model
EE : East European model
IT : Italian model
KR : Korean model
SP : Singapore model
15

CD SECTION

Perform all CD section check in the test mode.
TRAVERSE CHECK
procedure:
1. Connect an oscilloscope to TP (TE) and TP (VC) on the CD
board.
2. Set the CD test mode. (Refer to CD TEST MODE (See page
13))
3. Press the button once. (LCD DISPLAY "F –")
u
4. Confirm that the center of the oscilloscope waveform is at 0 V.
5. Confirm that the oscilloscope waveform Vp-p value is at 0.95
± 0.4 V.
6. To check CD-RW, turn the power off. Change discs to CD-
RW (TCD-W082L) (Part No. J-2502-063-2), then set the CD
test mode again. (Refer to CD TEST MODE (See page 13))
VOLT/DIV: 0.2 V (with the 10:1 probe in use)
TIME/DIV : 1 ms
A
Vp-p=A+B
0 V
B
15
ZS-X1
Ver 1.1
FOCUS BIAS CHECK
procedure:
1. Connect the oscilloscope to TP (RF) and TP (VC) on the CD
board.
2. Set the CD test mode. (Refer to CD TEST MODE (See page
13))
3. Press the u button twice. (LCD DISPLAY "P –")
Note: If this check is performed continuously after the
TRAVERSE CHECK, press the u button once.
4. Confirm that the oscilloscope waveform is as shown in the
figure below. (eye pattern)
A good eye pattern means that the diamond shape (◊) in the
center of the waveform can be clearly distinguished.
5. To check CD-RW, turn the power off. Change discs to CD-
RW (TCD-W082L) (Part No. J-2502-063-2), then set the CD
test mode again. (Refer to CD TEST MODE (See page 13))
• RF signal reference waveform (eye pattern)
VOLT/DIV: 0.2 V (with the 10: 1 probe in use.)
TIME/DIV: 500 ns
CD:
1.0 ± 0.3 Vp-p
CD-RW:
1.0 ± 0.4 Vp-p
When observing the eye pattern, set the oscilloscope
for AC range and raise vertical sensitivity.
Connecting Location:
– CD BOARD (Conductor Side) –
TP
(TE)
TP
(RF)
TP
(VC)