DOWNLOAD Sony SCD-XB780 Service Manual ↓ Size: 6.17 MB | Pages: 84 in PDF or view online for FREE

Name: Sony SCD-XB780
Brand: Sony
SKU: 387
Rating: 4 (1 reviews)

Model: SCD-XB780
Pages: 84
Size: 6.17 MB
Type: PDF
Document: Service Manual
Brand: Sony
Device: Audio
File: scd-xb780.pdf
Date: 2018-11-20

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SCD-XB780
41
41
IC904
IC901
IC902
R924
R923
R925
D922
R922
R921
D921
C926
C916
C917
R926
C923
C922
C921
C907
C906
R954
D917
D919
D920
D918
C978
C975
C976
C903
C974
C977
D913
D915
D916
D914
C905
D909
D911
D912
D910
C910
R957
C993
C991
C971
D905
D906
D902
D903
D904
R952
R951
R956
C929
D907
C904
C914
C930
R914
IC906
C924
C927
R915
C902
C901
D923
C911
C912
R963
R911
R912
D901
IC903
C919
C915
C945
R913
CN904
CN905
IC905
S991
CNP995
CN993
C997
T901
CN994
C996
C995
CN991
CN992
T902
L901
CNP902
R927
CNP901
EB901
L904
L905
L906
L907
CNP906
Q921
L908
BA033T
M5F7807L
M5F7907L
100
100
47k
UDZS-TE-17
-9.1B
3.3k
3.3k
UDZ-TE-17
-33B
10
50V
10
50V
0.1
63V
47k
0.1
63V
0.033
100V
0.033
100V
220
63V
330
63V
33
EC10DS2
TE12L
EC10DS2
TE12L
EC10DS2
TE12L
EC10DS2
TE12L
0.1
63V
0.1
63V
0.047
2200p
50V
0.1
63V
0.1
63V
EC10DS2
TE12L
EC10DS2
TE12L
EC10DS2
TE12L
EC10DS2
TE12L
10000
25V
EC10QS04
-TE12L5
EC10QS04
-TE12L5
EC10QS04
-TE12L5
EC10QS04
-TE12L5
0.1
63V
33
0.001
0.001
0.01
100V
1SS352-TPH3
1SS352-TPH3
EC10QS04
-TE12L5
EC10QS04
-TE12L5
EC10QS04
-TE12L5
2.2k
2.2k
2.2k
100
25V
UDZ-TE-17
-2.7B
10000
16V
6800
6.3V
2200p
10k
BA05T
6800
10V
2200p
10k
2200
25V
3300
25V
EC10QS04
-TE12L5
470
63V
470
63V
330
1/2W
680
680
EC10QS04
-TE12L5
M5F7805L
470
63V
4700
16V
2200p
10k
10P
5P
BA12T
2P
3P
10000p
250V
8P
10000p
250V
10000p
250V
2P
2P
9P
3P
8P
2SB1241-Q-TV2
F1
F2
M+12V
F1
F2
AGND
-33V
A+UR
A-UR
D+5V
D-GND
M-GND
A+5V
A-GND
A+3.3V
A-GND
D+3.3V
D-GND
A+7V
A-7V
DAC+5V
DACGND
+3.3V
GND
(CHASSIS)
HP GND
POWER MUTE
(AC IN)
POWER
LINE FILTER
TRANSFORMER
POWER
∗
NOT REPLACEABLE:
BUILT IN TRANSFORMER
TRANSFORMER
POWER
+5V REGULATOR
+7V REGULATOR
-7V REGULATOR
O
I
G
O
I
G
O
I
G
O
I
G
O
I
G
+5V REGULATOR
+3.3V REGULATOR
+12V REGULATOR
O
I
G
REGULATOR
-33V
∗
∗
∗
L906, 907
2.5A (AEP, UK)
2A (Korean)
5-22. SCHEMATIC  DIAGRAM  – POWER/POWER SW/PT Boards –
The components identified by mark 
0
 or dotted
line with mark 
0
 are critical for safety.
Replace only with part number specified.
(Page 39)
(Page 34)
(Page 35)
(Page 35)
Ver 1.1

SCD-XB780
42
42
•
 Waveforms
– RF Board –
1
IC001 
el
 (TE) (SACD Play mode)
2.5 Vp-p
29.5 ns
Approx.
1.4 Vp-p
Approx.
1.3 Vp-p
5.4 Vp-p
1.4 
µ
s
Approx.
1.3 Vp-p
Approx.
100 mVp-p
1.8 Vp-p
7.6 
µ
s
3.4 Vp-p
136 
µ
s
Approx.
1.4 Vp-p
Approx.
500 mVp-p
Approx.
300 mVp-p
Approx.
500 mVp-p
Approx.
300 mVp-p
3
IC001 
tj
 (RFAC) (SACD Play mode)
qs
IC509 
wg
 (MDP) (CD Play mode)
2
IC001 
r;
 (FE) (SACD Play mode)
3
IC001 
tj
 (RFAC) (CD Play mode)
qd
IC509 
el
 (FE), IC901 
yj
 (FE)
(SACD Play mode)
2
IC001 
r;
 (FE) (CD Play mode)
Approx.
1.5 Vp-p
– MAIN Board –
qa
IC509 
0
 (WFCK), IC701 
<zbz
 (WFCK)
qd
IC509 
el
 (FE), IC901 
yj
 (FE)
(CD Play mode)
Approx.
300 mVp-p
3 Vp-p
29.5 ns
3.4 Vp-p
472 ns
Approx.
1.2 Vp-p
Approx.
300 mVp-p
Approx.
100 mVp-p
qf
IC509 
ra
 (TE), IC901 
yg
 (TE)
(SACD Play mode)
qj
IC509 
yj
 (BCK), IC701 
<zb,
 (BCLK)
(CD Play mode)
qf
IC509 
ra
 (TE), IC901 
yg
 (TE)
(CD Play mode)
w;
IC701 
<zzm
 (RFIN) (CD Play mode)
qg
IC509 
t;
 (RFAC) (SACD Play mode)
qk
IC509 
ua
 (XTAI), IC811 
8
wa
IC701 
<znm
 (XTAL), 
<zn.
 (XTA2)
qg
IC509 
t;
 (RFAC) (CD Play mode)
2.6 Vp-p
29.5 ns
w;
IC701 
<zzm
 (RFIN) (SACD Play mode)
ws
IC701 
<zm/
 (XTA1), IC811 
q;
qh
IC509 
yg
 (LRCK), IC701 
<znc
 (LRCK)
(CD Play mode)
3.4 Vp-p
22.7 
µ
s
ql
IC509 
i;
 (EXCK), IC701 
<zvm
 (EXCK)
1
IC001 
el
 (TE) (CD Play mode)

43
SCD-XB780
2.5 Vp-p
29.5 ns
wd
IC801 
qa
 (MCKI), IC811 
qs
3.7 Vp-p
354 ns
1.4 Vp-p
50 ns
3.7 Vp-p
177 ns
wf
IC801 
tl
 (BCKAI), IC904 
4
 (FS128)
wj
IC901 
ra
 (EXTAL)
wg
IC801 
ya
 (PHREFI), IC904 
3
 (FS64)
wh
IC811 
1
, IC904 
5
 (YO)
2.9 Vp-p
88.6 ns
3.4 Vp-p
472 ns
2.9 Vp-p
88.6 ns
3.4 Vp-p
88.6 ns
2.5 Vp-p
88.6 ns
es
IC304 
4
, IC301 
ed
 (PSCK), 
ef
 (DSCK)
ed
IC304 
6
ef
IC301 
t;
 (PBCK) (CD Play mode)
– AUDIO Board –
ea
IC304 
1

44
SCD-XB780
3.8 Vp-p
452 ns
1.6 Vp-p
540 ns
rs
IC801 
ta
 (OSCI)
eg
 IC301 
ta
 (PLRCK) (CD Play mode)
3.4 Vp-p
22.7 
µ
s
– DISPLAY Board –
ra
IC801 
t;
 (OSCO)

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