Sony Cd Player Cdpxe370 Manual

11
CDP-XE270/XE370
Ver 1.1  2001.07
Note:
1. CD Block is basically designed to operate without adjustment. There-
fore, check each item in order given.
2. Use PATD-012 disc (4-225-203-01) unless otherwise indicated.
3. Use an oscilloscope with more than 10MΩ 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.
S Curve Check
Connection:
Procedure:
1. Connect an oscilloscope to test point TP (FE1) and TP...

12
CDP-XE270/XE370Ver 1.1 2001.07
E-F Balance Check
Connection:
Procedure:
1. Connect an oscilloscpe to test point TP (TE1) and TP (VC) on
the BD board.
2. Turn the power on.
3. Put the disc (PATD-012) in to playback the number two track.
4. Press the 
[TIME] button.  (The tracking servo and the sledding
servo are turned OFF)
5. Check the level B of the oscilliscopes waveform and the A
(DC voltage) of the center of the Traverse waveform.
Confirm the following :
A/B x 100 = less than ± 22%
Traverse...

13 13
CDP-XE270/XE370
SECTION  6
DIAGRAMS
6-1. NOTE  FOR  PRINTED  WIRING  BOARDS  AND  SCHEMATIC  DIAGRAMS
Note on Printed Wiring Board:
•X: parts extracted from the component side.
•Y: parts extracted from the conductor side.
•
: Pattern from the side which enables seeing.
(The other layers patterns are not indicated.)
Caution:
Pattern face side: Parts on the pattern face side seen from
(Conductor Side) the pattern face are indicated.
Parts face side: Parts  on the parts face side seen from
(Component...

14 14
CDP-XE270/XE370
6-2. PRINTED  WIRING  BOARD  – BD Board –• See page 13 for Circuit Boards Location.
TP (DGND)
C111
R138 C140C158
C112
C182R151R152
R140C154
R174
C138
C132 C151
C191C153
C192C134
C102
C101
R101 C171R142
R192C133
C199C103
C110 C172 R110
R136
C131 R184C150
R112
Q132 R111
C194R146 C152
R149
FB191C181
Q131 R134
R137 X191R103
R143 C193
R102 C130
C137
   
 
E EM101
(SPINDLE)
M102
(SLED) S101
(LIMIT)...

15 15
CDP-XE270/XE370
6-3. SCHEMATIC  DIAGRAM  – BD Board –• See page 20 for Waveforms.• See page 20 for IC Block Diagrams.
The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specified.Les composants identifiés par une marque 0 sont
critiques pour la sécurité. Ne les remplacer que
par une pièce portant le numéro spécifié. (Page 17)
TP
(RFDC)
Ver 1.1  2001.07 

16 16
CDP-XE270/XE370
6-4. PRINTED  WIRING  BOARDS  – LOADING/MAIN/POWER SW Boards –• See page 13 for Circuit Boards Location.
•Semiconductor
Location
Ref. No. Location
D601 D-7
D602 D-7
D603 C-7
D604 D-7
D605 D-7
D612 D-7
D613 C-7
D614 D-6
D615 D-6
D616 D-6
D631 E-3
D641 E-4
D643 E-3
D681 D-6
D682 D-5
D691 D-6
D692 D-5
IC601 E-6
IC602 F-6
IC603 D-6
IC631 E-2
IC651 B-9
IC801 B-8
Q642 E-4
Q681 C-6
Q682 B-9
Q691 C-6
Q692 C-9
1 5 CN151
S151
LOAD
OUT
M151
(LOADING)
M
S152
LOAD
IN
1-645-721-11(21)
LOADING...

17 17
CDP-XE270/XE370
6-5. SCHEMATIC  DIAGRAM  – LOADING/MAIN/POWER SW Boards –• See page 20 for IC Block Diagram.
The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specified.Les composants identifiés par une marque 0 sont
critiques pour la sécurité. Ne les remplacer que
par une pièce portant le numéro spécifié. (Page 15)
(Page 19) 

18 18
CDP-XE270/XE370
                  JW511
IC561
R522
R521
C532 R523 R524
JW
505
C561 R525C502
R511JW514
X501Q541
R532 R531 R501C501
JW
504
R528JW510
JW
502
JW
507R
551 R552
JW
506
CN501
JW
509 JW
501
JW
503
R527C531
JW515R561 R541
JW513JW512
JW
508
R526
R533R562
JW
516
NO502
                           
NO301
R502
R503
R504S501S502
S503
S504 
   
    
    TP
(ADJ)
(GND)
TP
(AFADJ)DISPLAY BOARD
l AMS L
PUSH ENTERJ681
BMAIN BOARD
CN621
xS524
XS523
M
S527
mS526m
S522
A OPEN/CLOSES521
IC501E12 432 34 35...

19 19
CDP-XE270/XE370
6-7. SCHEMATIC  DIAGRAM  – DISPLAY/KEY Boards –• See page 20 for Waveform.
(Page 17) 

20 20
CDP-XE270/XE370
1IC101 ta (RFAC) (CD Play Mode)6IC101 w; (SCOR) (CD Play Mode)
1IC501 es (XTAL)
2IC101 rd (RFDC) (CD Play Mode)7
IC101 yj (XTAO) (CD Play Mode)
3IC101 el (FE) (CD Play Mode)
4IC101 ra (TE) (CD Play Mode)
•Waveforms
– BD Board –
5IC101 wh (MDP) (CD Play Mode)
1.3 Vp-p
5.2 Vp-p
13.4 ms
5.5 Vp-p
250 ns
1.4 Vp-p5.9 Vp-p
59 ns
approx.
200 mVp-p
approx.
400 mVp-p
2.7 V
7.5 
µs
– DISPLAY Board –•IC Block Diagrams
– BD Board –
IC101 CXD2587Q
TE RFDC
CE IGEN 
AVSS0 
ADIO  AVDD0 CLTVFILO...