Read Sony CFD-S40CP Service Manual online
15
CFD-S40CP
CONTROL BOARD (Condustor side)
R616
S604
R606
R611
TEST B
TEST A
VOLUME
MEGA BASS
SOUND
R636
R631
R603
R632
R633
R605
R604
S603
-
S606
S605
S611
+
TEST mode : momentanly short
Focus Bias Check
1. Connect the oscilloscope between TP4003 (RF DC) and GND
1. Connect the oscilloscope between TP4003 (RF DC) and GND
on CD board.
2. Insert the disc (YEDS-18). (Part No. : 3-702-101-01) (CD)
3. Press the u button two times (LPC ON).
4. Confirm that the oscilloscope waveform is as shown in the fig-
3. Press the u button two times (LPC ON).
4. Confirm that the oscilloscope waveform is as shown in the fig-
ure below. (eye pattern)
A good eye pattern means that the diamond shape (
A good eye pattern means that the diamond shape (
◊) in the cen-
ter of the waveform can be clearly distinguished.
5. Press the u button.(LPC OFF)
6. Perform confirmation in step 4 again.
7. Insert the disc (TCD-W082L)(Part No:J-2502-063-2)(CD-RW)
8. Perform confirmation in step 3 to step 6.
6. Perform confirmation in step 4 again.
7. Insert the disc (TCD-W082L)(Part No:J-2502-063-2)(CD-RW)
8. Perform confirmation in step 3 to step 6.
•
RF Signal Reference Waveform (eye pattern)
RF level
(CD)
0.8 – 1.2 Vp-p (LPC ON)
0.9 – 1.5 Vp-p (LPC OFF)
(CD-RW)
1.0 – 1.4 Vp-p (LPC ON)
0.7 – 1.3 Vp-p (LPC OFF)
(CD)
0.8 – 1.2 Vp-p (LPC ON)
0.9 – 1.5 Vp-p (LPC OFF)
(CD-RW)
1.0 – 1.4 Vp-p (LPC ON)
0.7 – 1.3 Vp-p (LPC OFF)
VOLT/DIV : 200mV
TIME/DIV : 500 nS
TIME/DIV : 500 nS
CD SECTION
Perform all CD section check and all adjustments in the test mode.
How to put the set into CD test mode
1. Press the POWER button turn the set ON.
2. Press the FUNCTION button to select CD.
3. Set Tset mode by momentarily shorting both side of TEST A.
4. Press the x button two times. The set is into CD test mode
How to put the set into CD test mode
1. Press the POWER button turn the set ON.
2. Press the FUNCTION button to select CD.
3. Set Tset mode by momentarily shorting both side of TEST A.
4. Press the x button two times. The set is into CD test mode
(
88 is displayed)
5. Turn the power off to release test mode.
2
8
C1092
Q1010
C
C1084
RV1002
R1071
R1078
R1076
R1072
R1079
R107
R1067
R1070
4
Q1007
R1019
IC1007
R1004
oscilloscope
(AC range)
TP 4002(FE)
IC 1007 10pin
CD BOARD (SIDE A)
When observing the eye pattern, set the oscilloscope for AC range
and raise certical sensitivity
and raise certical sensitivity
2
4
2
C1065
R1037
R1033
C1049
TP4002(FE)
R1060
R1059
R1061
R1047
C1056
C1058
TP4003(RF DC)
C1068
IC1006
L1007
R1038
R1048
C1050
FB1
FB
FB
FL100
TP4003
(RF DC)
(RF DC)
CD BOARD
(SIDE A)
oscilloscope
(AC range)
(GND)
Focus Erorr Adjustment
1. Connect the oscilloscope between TP4002(FE) and IC1007 10
1. Connect the oscilloscope between TP4002(FE) and IC1007 10
pin on CD board.
2. Set to no disc and CD stop status.
3. Adjust RV1001 so that the center of the waveform meets the
3. Adjust RV1001 so that the center of the waveform meets the
specifications.
A
A: –100mV to +100mV
0V
Center of the waveform.
Specifications :
Adjustment Location : See page 16
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