ZS-X1
15
15
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)
Connecting Location:
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
u
button once. (LCD DISPLAY “F –”)
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: 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.
VOLT/DIV: 0.2 V (with the 10:1 probe in use)
TIME/DIV : 1 ms
0 V
A
B
Vp-p=A+B
– CD BOARD (Conductor Side) –
TP
(TE)
TP
(VC)
TP
(RF)
Adjustment and Connecting Location:
– TUNER BOARD (Component Side) (US, CND, SP, KR, AUS) –
– TUNER BOARD (Conductor Side) –
L4
AM VCO Voltage Adjustment
L2
FM VCO Voltage Adjustment
AM Tracking Adjustment
CT3
L3
FM Tracking Adjustment
T1 AM IF Adjustment
T2 FM IF Adjustment
L1
CT1
– TUNER BOARD (Component Side) (AEP, UK, IT, EE) –
L4
LW VCO Voltage Adjustment
L2
FM VCO Voltage Adjustment
LW Tracking Adjustment
CT3
L3-2
FM Tracking Adjustment
T1 AM IF Adjustment
T2 FM IF Adjustment
L1
CT1
MW Tracking Adjustment
CT3
L3-1
TP
(VT)
TP
(GND)
TP
(ANT)
• Abbreviation
AUS : Australian model
CND : Canadian model
EE
: East European model
IT
: Italian model
KR
: Korean model
SP
: Singapore model
