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MB-91 (SYSTEM CONTROL) SCHEMATIC DIAGRAM • See page 4-15 for printed wiring board.
Q Q
– Ref. No.: MB-91 board; 1,000 series –
3 7 6 3 1 5 1 5 0
1
2
3
4
MB-91 BOARD (6/12)
A
NO MARK:DVD/CD PLAY
D:DVD PLAY
C:CD PLAY
*:IMPOSSIBLE TO MEASURE THE
VOLTAGE AT THE MARKED POINTS.
ADOE
WCK
WRFD
MB-91 BOARD (5/12)
B
ARPWT
ARREQ
ARPCS
WOB-OFF
XDVD-R
WOBBLE
MB-91 BOARD (3/12)
CKPI
CEMCDB
CEMCDA
C
MB-91 BOARD (4/12)
SDSPCS
HD8
HD8
HD9
HD9
HD10
HD10
HD11
HD11
HD12
HD12
D
HD13
HD13
HD14
HD14
HD15
HD15
MB-91 BOARD (8/12)
HA0
HA0
HD8
2.3
HA1
HA1
HD9
2.5
HA2
HA2
HD10
2.3
HA3
HA3
HD11
1.9
E
HA4
HA4
HD12
2.1
HA5
HA5
HD13
1.7
HA16
HA16
HD14
1.7
HA17
HA17
HD15
2.5
HA18
HA18
3.3
3.3
F
HA0
0
HA1
2.3
HA2
1.9
HA3
1.4
HA4
1.7
HA5
1.4
XWAIT
HA16
1.4
HA17
1.4
H2GAINT
HA18
1.3
G
MB-91 BOARD (7/12)
R201
22
3.3
XRST
C201
0.01u
1.6
CPUCK
T E
L
1 3 9 4 2 2 9 6 5 1 3
H
FL201
B+
D+3.3V
MB-91 BOARD (8/12)
GND
I
CS5X
RD
MB-91 BOARD (7/12)
WRL
WRH
WRHL
J
MB-91 BOARD (8/12)
XUB
XLB
05
• Waveforms
MB-91 BOARD (5/12)
2 IC303 qj (DVD play)
500 mV/DIV 50 ns/DIV
1 IC303 9
DVD : 3.2 Vp-p (36.7 MHz)
CD : 3.2 Vp-p (8.6 MHz)
6 IC303 <z/,>
7 IC303 oa
w w w
.
3.2 Vp-p (2.82 MHz)
3.2 Vp-p (4.23 MHz)
5
6
7
8
C202
C204
0.01u
0.01u
B+
0
3
0
0
0
3
3.3
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
2
3
4
5
6
GND
GND
1.7
D8
INV271
7
D9
INV272
3.3
D10
AVCS
1.6
D11
CKINT
3.3
D12
AFPCS
D*/C0
D13
AVREQ
0
D14
SMUTE
3.3
D15
SARST
3.3
GND
SAREQ
IC201
3.3
XWAIT
MSRDY
H2GA
3.3
XINT
MSLAT
IC201
3.3
A0
CXD9598R
DFLAT
0
A1
DFMODE
3.3
A2
DFRST
D3.3/C0
A3
49CTL
D0/C3.3
A4
45CTL
A5
DACRST
A16
SA/DVD
3.3
A17
I2SO
0.1
A18
I2SCK
0
XRST
DSEL
3.4
AMC
OSDINT
1
8
1.6
CPUCK
27MCK
GND
9
GND
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
3.3
0
0
0
3.3
B+
B+
C203
C205
0.01u
0.01u
3 IC303 ql (CD play)
500 mV/DIV 200 ns/DIV
1.4 Vp-p
1.4 Vp-p
x
a o
y
i
4-29
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8
9
10
11
12
13
FBIINT
MB-91 BOARD (9/12)
33MH2
MB-91 BOARD (8/12)
MB-91 BOARD (5/12)
SDCK
ADCK
XWRFD
MB-91 BOARD (12/12)
XWCK
HSYNCO
MB-91 BOARD (1/12,9/12)
VS30
FIDOUT
27MFBI
MB-91 BOARD (9/12)
27MAVD
AVCS
MB-91 BOARD (1/12)
R205
AVREG
16M NAND FLASH
R206
IC202
AFPCS
MB-91 BOARD (11/12)
VSS
CLE
0
CLE
ALE
0
CKINTO
ALE
R202
XWE
3.3
0
XWE
XWP
3.3
XWP
SMUTE
N.C.
SARST
N.C.
SAREQ
N.C.
MB-91 BOARD (12/12)
MSRD
N.C.
MSLT
N.C.
XDFLAT
R203
100k
DFMODE
DFRST
N.C.
49CTL
N.C.
45CTL
N.C.
JL201
N.C.
JL202
R208
N.C.
100
HD8
2.3
I2SO
I/O0
HD9
2.5
I2SCK
MB-91 BOARD (11/12)
I/O1
R209
HD10
2.3
DSEL
I/O2
HD11
1.9
OSDINT
I/O3
MB-91 BOARD (10/12)
Q
Q
27MH2
VSS
3
7
6
3
B+
HSYNC
MB-91 BOARD (10/12)
FLDO
VENCRST
MB-91 BOARD (11/12)
VIDEOOFF
MB-91 BOARD (8/12,11/12)
4 IC303 <zxz>, <zxc>
5 IC303 <z/.>
3.4 Vp-p (33.8 MHz)
3.2 Vp-p (44.1 kHz)
u 1 6 3
.
http://www.xiaoyu163.com
2
4
9
9
8
14
15
• Waveforms
MB-91 BOARD (6/12)
1 IC201 ol
3.9 Vp-p (24.8 MHz)
2 IC201 yd
IC202
KM29W16000AT-T
B+
3.3
VCC
3.3
XCE
XCE
3.3
XRE
XRE
3.3
RB
R/B
0
TEST
GND
N.C.
R210
10k
N.C.
N.C.
N.C.
3.3 Vp-p (33.8 MHz)
N.C.
3 IC201 y;, ya
N.C.
N.C.
N.C.
N.C.
N.C.
2.5
HD15
I/O7
1.7
HD14
I/O6
1.7
HD13
I/O5
2.1
HD12
I/O4
3.3
VCCQ
1
5
1
5
0
8
9
2
4
C206
0.01u
3.2 Vp-p (4.23 MHz)
B+
4 IC201 tk
DVD : 3.2 Vp-p (36.7 MHz)
CD : 3.2 Vp-p (8.6 MHz)
5 IC201 tf
m
3.2 Vp-p (H)
c o
4-30
DVP-S9000ES
2
9
9
6 IC201 td
3.1 Vp-p (V)
7 IC201 rl
3.7 Vp-p (27 MHz)
8 IC201 wj
9
8
2
9
9
3.8 Vp-p (27 MHz)
9 IC201 wd
3.2 Vp-p (H)
SYSTEM CONTROL
MB-91 (6/12)
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