Cd Section - Sony ZS-D10 Service Manual

Adjustment and Connecting Location:
– TUNER BOARD (Component Side) (US, CND) –
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
CND: Canadian model
EE : East European model
IT : Italian model
17

CD SECTION

Perform all CD section check in the test mode.
HOW TO THE SET INTO CD TEST MODE
Procedure:
[POWER] [OPERATE]
1. Press the or button to turn the power
on.
2. Press the x button to set the function "CD".
3. Set the CD test mode by momentarily shorting JC801 and GND
on the MAIN board.
4. Press the button to enter the CD test mode.
x
(The message "80" is displayed on the liquid crystal display)
[POWER]
5. To release the CD test mode, press the
[OPERATE]
button to turn the power off.
Shorting Location:
JC801
IC801
TRAVERSE CHECK
Procedure:
1. Connect an oscilloscope to TP (TE) and TP (VREF) on the
CD board.
2. Set the CD test mode.
3. Insert the test disc (YEDS-18). (Part No. 3-702-101-01) (CD)
4. Press the NX button.
5. Confirm that the center of the oscilloscope waveform is at 0 V.
6. Confirm that the oscilloscope waveform Vp-p value is at 1.0 ±
0.5 V.
7. Change the test disc (TCD-W082L). (Part No. J-2502-063-2)
(CD-RW)
8. Perform confirmation in the same manner as step 4 to 6.
VOLT/DIV: 0.2 V (with the 10:1 probe in use)
TIME/DIV : 1 ms
A
0 V Vp-p=A+B
B
17
FOCUS BIAS CHECK
Procedure:
1. Connect the oscilloscope to TP (RF) and TP (VREF) on the
CD board.
2. Set the CD test mode.
3. Insert the test disc (YEDS-18). (Part No. 3-702-101-01) (CD)
4. Press the NX button three times. (LPC ON)
5. 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.
6. Press the button. (LPC OFF)
NX
7. Perform confirmation in the same manner as step 5.
8. Change the test disc (TCD-W082L). (Part No. J-2502-063-2)
or
(CD-RW)
9. Perform confirmation in the same manner as step 4 and 5.
• RF signal reference waveform (eye pattern)
VOLT/DIV: 0.2 V (with the 10: 1 probe in use.)
TIME/DIV: 500 ns
CD:
1.1 ± 0.2 Vp-p (LPC ON)
1.2 ± 0.4 Vp-p (LPC OFF)
CD-RW:
1.1 ± 0.2 Vp-p (LPC ON)
When observing the eye pattern, set the oscilloscope
for AC range and raise vertical sensitivity.
Connecting Location:
– CD BOARD (Conductor Side) –
TP
(RF)
IC702
TP
(TE)
IC701
TP
(VREF)
ZS-D10