Page 1
XV-D9000
1-2
1. This design of this product contains special hardware and many circuits and components specially
for safety purposes. For continued protection, no changes should be made to the original design
unless authorized in writing by the manufacturer. Replacement parts must be identical to those
used in the original circuits. Services should be performed by qualified personnel only.
2. Alterations of the design or circuitry of the product should not be made. Any design alterations of
the product should not be made. Any design alterations or additions will void the warranty
and will further relieve the manufacture of responsibility for personal injury or property damage
resulting therefrom.
3. Many electrical and mechanical parts in the products have special safety-related characteristics.
These characteristics are often not evident from visual inspection nor can the protection afforded
by them necessarily be obtained by using replacement components rated for higher voltage,
wattage, etc. Replacement parts which have these special safety characteristics are identified in
the Parts List of Service Manual. Electrical components having such features are identified by
shading on the schematics and by ( ) on the Parts List in the Service Manual. The use of a
substitute replacement which does not have the same safety characteristics as the recommended
replacement parts shown in the Parts List of Service Manual may create shock, fire, or other
hazards.
4. The leads in the products are routed and dressed with ties, clamps, tubings, barriers and the
like to be separated from live parts, high temperature parts, moving parts and/or sharp edges
for the prevention of electric shock and fire hazard. When service is required, the original lead
routing and dress should be observed, and it should be confirmed that they have been returned
to normal, after reassembling.
5. Leakage current check (Electrical shock hazard testing)
After reassembling the product, always perform an isolation check on the exposed metal parts of
the product (antenna terminals, knobs, metal cabinet, screw heads, headphone jack, control
shafts, etc.) to be sure the product is safe to operate without danger of electrical shock.
Do not use a line isolation transformer during this check.
Plug the AC line cord directly into the AC outlet. Using a "Leakage Current Tester", measure
the leakage current from each exposed metal parts of the cabinet , particularly any exposed
metal part having a return path to the chassis, to a known good earth ground. Any leakage
current must not exceed 0.5mA AC (r.m.s.)
Alternate check method
Plug the AC line cord directly into the AC outlet. Use an AC voltmeter having, 1,000 ohms
per volt or more sensitivity in the following manner. Connect a 1,500 10W resistor paralleled by
a 0.15 F AC-type capacitor between an exposed
metal part and a known good earth ground.
Measure the AC voltage across the resistor with the
AC voltmeter.
Move the resistor connection to each exposed
metal part, particularly any exposed metal part
having a return path to the chassis, and measure
the AC voltage across the resistor. Now, reverse
the plug in the AC outlet and repeat each
measurement. voltage measured Any must not
exceed 0.75 V AC (r.m.s.). This corresponds to 0.5
1. This equipment has been designed and manufactured to meet international safety standards.
2. It is the legal responsibility of the repairer to ensure that these safety standards are maintained.
3. Repairs must be made in accordance with the relevant safety standards.
4. It is essential that safety critical components are replaced by approved parts.
5. If mains voltage selector is provided, check setting for local voltage.
Good earth groundPlace this
probe on
each exposed
metal part. AC VOLTMETER
(Having 1000
ohms/volts,
or more sensitivity)
1500 10W
0.15 F AC TYPE
!
Burrs formed during molding may be left over on some parts of the chassis. Therefore,
pay attention to such burrs in the case of preforming repair of this system.
Page 2
XV-D9000
1-3
Preventing static electricity
Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged,
can destroy the laser diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs.
1.1. Grounding to prevent damage by static electricity
Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as DVD players.
Be careful to use proper grounding in the area where repairs are being performed.
1.1.1. Ground the workbench
1. Ground the workbench by laying conductive material (such as a conductive sheet) or an iron plate over
it before placing the traverse unit (optical pickup) on it.
1.1.2. Ground yourself
1. Use an anti-static wrist strap to release any static electricity built up in your body.
1.1.3. Handling the optical pickup
1. In order to maintain quality during transport and before installation, both sides of the laser diode on the
replacement optical pickup are shorted. After replacement, return the shorted parts to their original condition.
(Refer to the text.)
2. Do not use a tester to check the condition of the laser diode in the optical pickup. The tester's internal power
source can easily destroy the laser diode.
1.2. Handling the traverse unit (optical pickup)
1. Do not subject the traverse unit (optical pickup) to strong shocks, as it is a sensitive, complex unit.
2. Cut off the shorted part of the flexible cable using nippers, etc. after replacing the optical pickup. For specific
details, refer to the replacement procedure in the text. Remove the anti-static pin when replacing the traverse
unit. Be careful not to take too long a time when attaching it to the connector.
3. Handle the flexible cable carefully as it may break when subjected to strong force.
4. It is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it
Conductive material
(conductive sheet) or iron plate (caption)
Anti-static wrist strap
Page 43
XV-D9000
1-44
58
59
60~63
64
65~68
69
70~73
74
75~78
79
80~83
84
85~88
89
90~93
94
95~98
99
100~103
104
105
106
107
108~110
111
112
113
114
115
116
117
118~121
122
123~126
127
128
129
130
131
132
133,134
135~138
139
140~143
144
145~148
149PPLLPDN
VDD
VOUT0~3
VSS
VOUT4~7
VDD
VOUT8~11
VSS
VOUT12~15
VDD
VOUT16~19
VSS
VOUT20~23
VDD
VOUT24~27
VSS
VOUT28~31
VDD
VOUT32~35
VSS
XPLLRST
PLLTST
VDD
SDIV2~0
SVCORNG
AVSS
SLF
AVCC
SDCKREF
SDPLLPDN
VSS
SDD00~03
VDD
SDD04~07
VSS
SDWE
SDCAS
SDRAS
VDD
VDDP
SDA11,10
SDA0~3
VSS
SDD015~012
VDD
SDD011~08
VSS
Pin No.Symbol
I/OFunction Pin Function (2/3)
SVP-PE PLL,power down
Power supply terminal
Video data signal output
Connect to ground
Video data signal output
Power supply terminal
Video data signal output
Connect to ground
Video data signal output
Power supply terminal
Video data signal output
Connect to ground
Video data signal output
Power supply terminal
Video data signal output
Connect to ground
Video data signal output
Power supply terminal
Video data signal output
Connect to ground
PLL Reset signal input L : active
Factory test signal
Power supply terminal
SDRAM PLL multiplying factor
VCO Range selection for SDRAM PLL
Connect to ground
Analog VCO control voltage input and charge pump output
Power supply terminal
Reference clock for SDRAM PLL
SDRAM PLL, power down
Connect to ground
SDRAM Data input/output
Power supply terminal
SDRAM Data input/output
Connect to ground
SDRAM Write enable
SDRAM Column address strobe
SDRAM row address strobe
Power supply terminal
Power supply for RF0/RF1 & DIR/DOR write circuit
SDRAM Address data output
SDRAM Address data output
Connect to ground
SDRAM Data input/output
Power supply terminal
SDRAM Data input/output
Connect to ground I
-
O
-
O
-
O
-
O
-
O
-
O
-
O
-
O
-
O
-
I
I
-
I
I
-
I/O
-
I
I
-
I/O
-
I/O
-
O
O
O
-
-
O
O
-
I/O
-
I/O
-
MN8271AT
Page 46
XV-D9000
1-47 A
L
L
H
HY
L
L
L
H B
L
H
L
H
1
2
3
4
5
6
714
13
12
11
10
9
8VCC
4B
4A
4Y
3B
3A
3Y
(TOP VIEW) 1A
1B
1Y
2A
2B
2Y
GND
TC74HC08AP(IC915) / TC74HCT08AP(IC916):2-input and gate
TC74VHC08FT-X(IC722) / TC74VHCT08AFT-X(IC721):2-input and gate
1.Pin layout 2.Truth table
16
15
14
13
12
11
10
9 1
2
3
4
5
6
7
8 1G
B
1C3
1C2
1C1
1C0
1Y
GNDVcc
2G
A
2C3
2C2
2C1
2C0
2Y
SELECT
INPUTS
X:Don't Care B
X
L
L
L
L
H
H
H
HA
X
L
L
H
H
L
L
H
HC0
X
L
H
X
X
X
X
X
XC2
X
X
X
X
X
L
H
X
X
G
H
L
L
L
L
L
L
L
LY
L
L
H
L
H
L
H
L
H C3
X
X
X
X
X
X
X
L
H C1
X
X
X
L
H
X
X
X
X DATA INPUTSOUTPUT
STORE
(TOP VIEW)
TC74ACT153F-X(IC183):Dual 4-channel multiplexer
1.Pin layout
2.Truth table
