Casio Qt 7300 Service Manual

Ñ 49 Ñ
        Symptoms Probable Causes
Ð Improper connection of the network cable
nCheck the RJ-45 connector installed on the NET port of the multi-I/O
expansion card.
Network function is not Ð Loose connection between the multi-I/O (NET) expansion card and the
working CPU card.
nPull out the multi-I/O expansion card from the CPU card then re-install
it back. If symptoms persist, replace the multi-I/O expansion card.
Ð Defective CPU card
nReplace the CPU card of the System.
Ð Loose connection between...

Ñ 50 Ñ
8. DATA SHEET
8-1. Power Supply (100W)
The power supply used in the QT-7300 is a 100W open frame power supply.
The specifications and features of this special power supply are listed in the following sections.
Specifications
¥ High efficiency 100W output
¥ Universal input 90 to 264 VAC
¥ Overvoltage protection
¥ Small size 3 X 5 X 1.0Ó footprint
¥ Continuous short circuit protection
¥ Conductive EMI meets FCC & CISPR class B
Output Specifications
¥ Voltage Accuracy:
+5.1VDC output±2%
+12.25VDC...

Ñ 51 Ñ
9. CIRCUIT DIAGRAM
MODEL : QT-7300 (EX-963)
CONTENTS
  1. MOTHER BOARD SBC8360  (SBC8360-370)1/23 ................................................................. 52
  2. MOTHER BOARD SBC8360  (443BX-A)2/23 ......................................................................... 53
  3. MOTHER BOARD SBC8360  (443BX-B)3/23 ......................................................................... 54
  4. MOTHER BOARD SBC8360  (DIMM0)4/23...

Ñ 52 Ñ
9. PENTIUM MOTHER BOARD
RSV 6 NMI 6 INTR
R3910P8R 330
VCMOS
2.7K
10P8R 330RESERVED
PGA370-C
SLCTRL VCCCORE VID3  17,18
VID0  17,18
L31
4.7UH
C373
 47U/10VVCCDET
VCC3
2_5V
R371
150 1%
R372
150 1% C429
10U CLKREF
C428
0.1U R222
330RTCTRLR2 X2 S35Z32 Y35
X34
W5
V36
V32
T34
T2
S5
R36
R32
P34
P2
N5
M32
K34
K32
K2
J5
H36
H32
F4
F34
F30
F26
F22
F2
F14
E9
E5
E17
E13
D6
D36
D32
D28
D24
D20 C3 B6
B34
B30
B26
B22
B18
B14 B10 AM8
AM4
AM32
AM28
AM24
AM20
AM16
AM12
AK34 AB36
VCC_CORE
VCC_CORE
VCC_CORE
VCC_CORE...

Ñ 53 Ñ
MD[0.  63]  3,4
U36-A
MECC2  4
MECC3  4
MECC6  4
MECC7  4
MAA[0..13]  4
VCC3
MAB12
MAB9
MAB11R395
1K
R173
R164
R192
75 1%
GTLREF1
GTLREF2
DCLKREF  16 DCLKO  16 BXHCLK  16 VCC3 GTLREF1
GTLREF2CSB0-  4
CSB1-  4 MAB9
MAB11
MAB12MAA0
MAA1
MAA2
MAA3
MAA4
MAA5
MAA6
MAA7
MAA8
MAA9
MAA10
MAA11
MAA12
MAA13 AA23
AA26
AA25
Y22
AF17
AB16
AE17
AC17
AF18
AE19
AF19
AC18
AC19
AE20
AD20
AF21
AC21
AF25 MECC2
NECC3
NECC6
NECC7
MAA0
MAA1
MAA2
MAA3
MAA4
MAA5
MAA6
MAA7
MAA8
MAA9
MAA10
MAA11
MAA12
MAA13
MAB0
MAB1
MAB2...

Ñ 54 Ñ
MD[0..63]  2,4
U36-B
MECC0  4
MECC1  4
MECC4  4
MECC5  4
CBE0-  5,12,15,22
CBE1-  5,12,15,22
CBE2-  5,12,15,22
CBE3-  5,12,15,22
FRAME-  5,12,14,15,22
DEVSEL-  5,12,14,15,22
   IRDY-  5,12,14,15,22
   TRDY-  5,12,14,15,22
   STOP-  5,12,14,15,22
           PAR  5,12,15,22
PLOCK-  12,14,15
   SERR-  5,14,15,22
PREQ0-  5,14,15
PREQ1-  5,14,15
PREQ2-  5,14
PREQ3-  5,12,14
PREQ4-  14,22
PGNT0-  14,15
PGNT1-  14,15
PGNT2-  14
PGNT3-  12,14
PGNT4-  14,22
-GBE0  19
-GBE1  19
-GBE2  19
-GBE3  19
GFRAME-...

Ñ 55 Ñ
2  MAA[0..13] 2,3  MD[0..63]
2,3  MECC[0..7]MAA0
MAA1
MAA2
MAA3
MAA4
MAA5
MAA6
MAA7
MAA8
MAA9
MAA10
MAA11
MAA12
MAA1333
117
34
118
35
119
36
120
37
121
38
122
39
123
126
132
115
111
27
48
28
29
46
47
112
113
130
131
128
63
42
125
79
163
30
114
45
129
147
83
82
165
166
167
6
18
26
40
41
49
59
73
84
90
102
110
124
133
143
157
168
12
23
32
54
68
85
107
127
148
162
1
43A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10(AP)
A11(BA0)
A12(BA1)
A11/A13
A12/DU
A13/DU
RAS#
CAS#
WE#
WE#
DQMB0
DQMB1
DQMB2
DQMB3
DQMB4
DQMB5...

Ñ 56 Ñ
5VSB
SB5V
AT XR241
51K
R250
2.2K VCC3
VCC3 VCC3 VCC3
VCC3 VCC3
VCC3 INTEL_PIIX4E-B CKRUN-
IDSEL 3,12,15,22  CBE0-
3,12,15,22  CBE1-
3,12,15,22  CBE2-
3,12,15,22  CBE3-
12,14,15,22  DEVSEL-
3,12,14,15,22  FRAME-
3,12,14,15,22  IRDY-     
3,12,14,15,22  TRDY-     
3,12,15,22  PAR           
3,14,15,22  SERR-    
3,12,14,15,22  STOP-    
3,15,19,21,22  PCIRST-
3,14,15  PREQ0-
3,14,15  PREQ1-
3.14  PREQ2-
3,12,14  PREQ3-
14,15,19,22  PIRQA-
12,14,15  PIRQB-
14,15  PIRQC-
14,15  PIRQD-
21  PGCS0-
18...

Ñ 57 Ñ
U37-B 14,15  SD[8..15]LA[17.. 23]  14,15
7  PDD[0..15]
LA23
LA22
LA21
LA20
LA19
LA18
LA17
SD15
SD14
SD13
SD12
SD11
SD10
SD9
SD8
W16
T16
Y17
V17
Y18
W18
Y19
W19
Y15
T14
W14
U13
V13
Y13
T12 SD8
SD9
SD10
SD11
SD12
SD13
SD14
SD15
LA17
LA18
LA19
LA20
LA21
LA22
LA23 VCCSUS
VCCSUS
VCCP
VCCP
VCCP
VCCP
VCC
VCC
 
VSS
VSS
VSS
VSS
VSS
NC
NC N16
R16
P15
F14
E16
E12
R15
F15
E13
J12
K12
L12
M12
N18
M16
PDD0
PDD1
PDD2
PDD3
PDD4
PDD5
PDD6
PDD7
PDD8
PDD9
PDD10
PDD11
PDD12
PDD13
PDD14
PDD15
SDD15
SDD14
SDD13
SDD12...

Ñ 58 Ñ
5,8,10,14,15,18,21  SD[0..7] PDD8  6 R127
IDE1
33 R126
PDD-8
PDD-9
PDD-10
PDD-11
PDD-12
PDD-13
PDD-14
PDD-15 PDD-7
PDD-6
PDD-5
PDD-4
PDD-3
PDD-2
PDD-1
PDD-02
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44 1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
41
43 CN5 BRSTDRV-
BRSTDRV- 5  BRSTDRV-
PDD7
PDD6
PDD5
PDD4
PDD3
PDD2
PDD1
PDD0 6  PDD7
6  PDD6
6  PDD5
6  PDD4
6  PDD3
6  PDD2
6  PDD1
6  PDD0
6  PDREQ
6  PDIOW-
6  PDIOR-
6  PIORDY
6  PDDACK-
6,14,15  IRQ14
6  PDA1
6  PDA0
6...