Sony MDX-CA790X Service Manual ▷ View online
MDX-CA790X
13
3-10. CHUCKING ARM ASSY
1
Remove the chucking arm assy
in the direction of the arrow.
in the direction of the arrow.
holder assy
3-11. OPTICAL PICK-UP (KMS-242E)
6
bearing (SL)
5
feed screw assy
3
screw
(K2
(K2
×
3)
2
shaft (SL2)
1
two screws
(K2
(K2
×
3)
7
optical pick-up
(KMS-242E)
(KMS-242E)
4
screw
(B2
(B2
×
3)
MDX-CA790X
14
3-12. SL MOTOR ASSY (SLED) (M902), SP MOTOR ASSY (SPINDLE) (M901)
5
screw
(P1.7
(P1.7
×
1.8)
6
bracket (SL)
0
two screws
(P1.7
(P1.7
×
1.8)
qa
retainer (SP)
qs
SP motor assy
(spindle) (M901)
(spindle) (M901)
8
screw
(B2
(B2
×
3)
2
screw (PS2
×
4)
3
screw (PS2
×
8)
4
sensor board
1
Remove solders of motors
(M901, M902, M903).
(M901, M902, M903).
9
base (SL)
7
SL motor assy
(sled) (M902)
(sled) (M902)
15
MDX-CA790X
SECTION 4
ELECTRICAL ADJUSTMENTS
TEST MODE
This set have the test mode function.
<Set the Test Mode>
1. Turn ON the regulated power supply. (The clock is displayed)
1. Turn ON the regulated power supply. (The clock is displayed)
Note:
Press the
[OFF]
button, if the clock is not displayed.
2. Push the preset
[4]
button.
3. Push the preset
[5]
button.
4. Press the preset
[1]
button for more than two seconds.
5. Then the display indicates all lights, the test mode is set.
<Release the Test mode>
1. Push the
1. Push the
[OFF]
button.
MD SECTION
MD section adjustments are done automatically in this set.
TUNER SECTION
Tuner section adjustments are done automatically in this set.
16
MDX-CA790X
SECTION 5
DIAGRAMS
• IC Block Diagrams
– SERVO Board –
– SERVO Board –
IC1
CXA2523AR
–1
–2
+
–
IVR
BB
+
–
IVR
AA
+
–
IVR
CC
+
–
IVR
DD
+
–
IVR
+
–
EE
EE'
EFB
TESW
PTGR
48
MORFO
47
MORFI
46
RFO
45
OPN
44
OPO
43
ADDC
42
COMPP
41
COMPO
40
AGCI
39
RF AGC
38
RF
37
PEAK
36 BOTM
35 ABCD
34 FE
33 AUX
32 ADFG
31 ADAGC
30 ADIN
29 ADFM
28 SE
27 CSLED
26 TE
25 WBLADJ
24
VCC
23
3TADJ
22
EQADJ
21
VREF
20
F0CNT
19
XSTBY
18
XLAT
17
SCLK
16
SWDT
15
TEMPR
14
TEMPI
13
GND
12
APCREF
11
APC
10
PD
9
F
8
E
7
D
6
C
5
B
4
A
3
VC
VI CONV
BGR
VREF
SCRI - PARA
DECODE
+ –
–
+
AUXSW
COMMAND
+
–
IVR
GSW
+
–
FF
FBAL
FF'
TG
SEA
–
+
–
+
–1
–2
TG
TEA
WBL
3T
EQ
–
–
+
+
+
+
–
–
–
–
–
–
DET
ADIP
AGC
WBL
BPF22
BPFC
ABCDA
FEA
WBL
ATA
–
+
CVB
+
–
RFA1
–
–
–
–
1
2
–
–
–
–
–
1
2
2
GRVA
OFST
RFA2
GRV
HLPT
PTGR
–2
–1
–1
–2
BOTTOM
PEAK
RF AGC
EQ
EQ
DET
P-P
WBL
3T
WBL
TEMP
PBH
–
+
USROP
+
–
USRC
3T
BPF3T
PEAK3T
1
I
2
J
RFA3
PBSW
AUX
SW
IV
ESW
EBAL
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