ZS-H10CP/H20CP
15
15
ZS-H10CP/H20CP
Adjustment and Connecting Location:
L4
AM Frequency Coverage Adjustment
L2
FM Frequency Coverage Adjustment
AM Tracking Adjustment
CT3
L3
FM Tracking Adjustment
T1 AM IF Adjustment
T2 FM IF Adjustment
L1
CT1
– TU Board (Component Side) –
TP
(VT)
TP
(GND)
TP
(ANT)
– TU Board (Conductor Side) –
Checking Location:
+
–
CD board
TP (RFACO)
TP (VC)
oscilloscope
(DC range)
Procedure :
1. Connect oscilloscope to TP (RFACO) and TP (VC) on the CD
board.
2. Press the
[POWER]
button to turn the power on.
3. Set the disc (PATD-012) and press the
u
button to playback.
4. Confirm that 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.
VOLT/DIV: 200 mV
TIME/DIV: 500 ns
level:
0.8 to 1.4 Vp-p
CD SECTION
Note:
1.
CD Block is basically constructed to operate without adjustment.
2.
Use PATD-012 disc (Part No. 4-225-203-01) unless otherwise
indicated.
3.
Use an oscilloscope with more than 10 M
Ω
impedance.
4.
Clean the object lens by an applicator with neutral detergent when the
signal level is low than specified value with the following checks.
5.
Check the focus bias check when optical pick-up block is replaced.
FOCUS BIAS CHECK
TP
(VC)
TP
(RFACO)
IC201
– CD Board (Conductor Side) –