MEASURING METHOD AND WAVEFORMS
1. TEST POINT
Connect the GND (-) probe of the oscilloscope to the specified reference voltage points to check the
waveforms.
NOTE
Measuring Disc : CD/TCD-784
(It is recommended to use extension wires between the probe and test points.)
• When watching the HF waveform, use the extending wire as short as possible.
• If the HF waveform is unclear due to noise or the eye pattern is indistinguishable, replace the traverse
ASSY after measuring the lop.
• For points
q
take measurements at the points shown in the diagram below.
1.1. CD PCB Aside test point
1.2. CD PCB Bside test point
BARCODE LABEL
MI
RP
FCT2
FCT1
ICT
CUP12950Z MP
Pb
TC94A92FG
1.LD_CHK
3.OPEN
2.CLOSE
4.M_STBY
11.BUCK
5.SBSY 6.DREQ 7.DECRST 8.INSW 9.CLSW 10.OPSW
12.CCE 13.BUS0 14.GND 15.BUS1 16.BUS2 17.BUS3 18.SRAMSTB 19.SPDIF
LOAD+
LOAD-
OPSW
MGND
CLSW
FROM PICK_UP
SLED+
LMSW
MGND
SPINDLE-
SLED-
1.GND
2.+3.3V
4.+12V
5.GND_DR
V
3.GND
JW80
CWE5202080A
R830
R842
R824
R801
R818
R832
R828
R827
R826
L803
R804
D806
D805
CN82
R825
R829
L801
R831
R881
R883
R884
L800
RFO
R805
R844
AGND
RFEQO
DGND
VC
R843
R852
WF81
CN80
R845
R833
Q800
R863
R834
R835
R836
R814
X800
R812
R864
R806
R807
R811
R810
R813
R808
R809
L802
D800
D802
D801
D803
R823
JK80
C884
C886
C885
C883
C894
C893
C890
CN81
R847
R848
R849
R815
R816
R817
R819
R820
R821
R822
IC84
TEI
FEI
C891
C892
C805
C806
C807
C808
C816
C817
C818
C819
C822
C823
C824
C825
C826
C827
C800
C802
C803
C804
C809
C810
C81
1
C812
C813
C814
C815
C828
C829
C830
C831
C832
C839
C840
C841
C842
C843
C844
C845
C846
C847
C848
C849
C850
C851
C852
C869
C870
C871
C872
C873
C874
C875
C876
C877
C878
C896
C897
C898
C899
C900
C901
C853
C854
C855
C856
C857
C858
C859
C860
C861
C862
C865
C867
C820
C821
IC83
C880
C888
C895
C887
WF80
R865
R866
R867
R868
R869
R870
R871
R872
R862
C833
C889
C881
C836
C863
C864
R850
R851
R887
R892
IC81
C838
C902
C801
C834
C835
C837
C879
C882
R894
R888
R890
R891
R893
R889
R895
R885
R886
C866
C868
R882
C903
C904
C905
IC80
5
1
16
15
2
1
1
6
5
1
80
20
21
40
41
60
61
1
19
2
18
10
11
14
15
28
I
C
O
RFEQO
GND
2.+3.3V
3.GND
4.+12V
5.GND_DR
V
1.LD_CHK
2.CLOSE
3.OPEN
4.M_STBY
5.SBSY
6.DREQ
7.DECRST
8.INSW
9.CLSW
10.OPSW
11.BUCK
12.CCE
13.BUS0
14.GND
15.BUS1
16.BUS2
17.BUS3
18.SRAMSTB
19.SPDIF
RFEQO
2. WAVEFORMS
1. DISC PLAY RF WAVEFORM (EYE-PATTERN)
3. Measurement of Board Test Points
When measuring the board test points the measurements can be performed easily by turning over the
MAIN board with the back panel attached with screws, as shown in the figure below.
Disassembling Procedure (See "DISASSEMBLY" for details on the disassembly
procedure)
1. Remove all of the screws from the MAIN PCB, SMPS PCB, CD Mecha, CD Foot, NET PCB, USB PCB and
chassis (CD Mecha, and CD Foot are for the RCDN10 only).
2. Remove the SMPS PCB, CD Mecha and CD Foot (CD Mecha and CD Foot are for the RCD-N10 only).
3. Remove the molded parts from the back panel.
4. Raise the MAIN board, then slide the entire back panel to the rear to remove everything from the back
panel .
1.1 CD(TCD784) PLAY
q
RFEQO
Before Servicing
This Unit
Electrical
Mechanical
Repair Information
Updating
55