HT-BE1, SA-WBE1, SS-BE1 - Sony Audio Service Manual (repair manual). Page 11

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11
11
HT-BE1/SA-WBE1/SS-BE1
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in 
 and 
1
/
4
 
W or less unless otherwise
specified.
2
: nonflammable resistor.
C
: panel designation.
Note:
The components identi-
fied by mark 
0
 or dotted
line with mark 
0
 are criti-
cal for safety.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque 
0
 sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro
spécifié.
A
: B+ Line.
• Voltage is dc with respect to ground under no-signal
(detuned) condition.
• Voltages are taken with a VOM (Input impedance 10 M
).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Signal path.
F
: LINE
c
: DIGITAL AUDIO (OPTICAL)
J
: DIGITAL AUDIO (COAXIAL)
• Abbreviation
CND : Canadian model.
SP
: Singapore model.
MY
: Malaysia model.
MX
: Mexican model.
• (
) : Page of Service Manual.
((
)) : Page of Supplement-1.
Note on Printed Wiring Boards:
• X
: parts extracted from the component side.
: Pattern from the side which enables seeing.
• Abbreviation
CND : Canadian model.
SP
: Singapore model.
MY
: Malaysia model.
MX
: Mexican model.
• (
) : Page of Service Manual.
((
)) : Page of Supplement-1.
55
BTACT
O
Not used. (open)
56
BST
I
Boot stop signal input from system controller.
57
MOD1
I
Operation mode signal input (Fixed at H : 256fs)
58
MOD0
I
Operation mode signal input (Fixed at L : single chip mode)
59
EXLOCK
I
Lock signal input
60
VDDI
I
Power supply pin (+2.4 V)
61
VSS
Ground
62 to 66
A17 to A13
O
External memory address output (SRAM) (Not used. (open))
67
GP10
O
Connected to LRCKO
68
GP9
O
Decode signal output for system controller.
69
GP8
I
Audio signal input from DIR.
70
VDDI
I
Power supply pin (+2.4 V)
71
VSS
Ground
72 to 75
D15/GP7 to D12/GP4
I/O
External memory data input/output (general port) (Not used. (open))
76
VDDE
I
Power supply pin (+3.3 V)
77 to 80
D11/GP3 to D8/GP0
I/O
External memory data input/output (general port) (Not used. (open))
81
VSS
Ground
82
A9
O
External memory address output (SRAM) (Not used. (open))
83 to 85
A12 to A10
O
External memory address output (SRAM) (Not used. (open))
86
TDO
O
Not used. (open)
87
TMS
I
Not used. (open)
88
XTRST
I
Not used. (open)
89
TCK
I
Not used. (open)
90
TDI
I
Not used. (open)
91
VSS
Ground
92 to 97
A8 to A3
O
External memory address output (SRAM) (Not used. (open))
98, 99
D7, D6
I/O
External memory data input/output (SRAM) (Not used. (open))
100
VDDI
I
Power supply pin (+2.4 V)
101
VSS
Ground
102 to 105
D5 to D2
I/O
External memory data input/output (SRAM) (Not used. (open))
106
VDDE
I
Power supply pin (+3.3 V)
107, 108
D1, D0
I/O
External memory data input/output (SRAM) (Not used. (open))
109, 110
A2, A1
O
External memory address output (SRAM) (Not used. (open))
111
VSS
Ground
112
 A0
O
External memory address output (SRAM) (Not used. (open))
113
PM
I
PLL initialization input from system controller.
114, 115
SDI3, SDI4
I
Not used. (open)
116
SYNC
I
Sync/async selection input (Fixed at H : async)
117 to 119
VSS
Ground
120
VDDI
I
Power supply pin (+2.4 V)
Pin No.
Pin Name
I/O
Pin Description
• Waveforms
1
IC501 
wk
 (XT0)
1V/div   50nsec/div
12.0MHz
2
IC803 
wa
 (XOUT)
1V/div   50nsec/div
12.288MHz
3
IC801 
ek
 (X2)
1V/div   20nsec/div
4
IC802 
qs
 (MCLK2)
1V/div   50nsec/div
16.0MHz
13.5MHz
5
IC802 
qf
 (SCKOUT)
1V/div   50nsec/div
13.5MHz
3.0Vp-p
3.5Vp-p
2.6Vp-p
3.1Vp-p
4.0Vp-p
Ver. 1.3
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