Service Manuals, User Guides, Schematic Diagrams or docs for : Akai DV DV-P4785KDSM DV-P4785KDSM
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CONTENTS
1. PRECAUTIONS-------------------------------------------------------------------------------------------------------------------- 1
1-1 SAFETY PRECAUTIONS ---------------------------------------------------------------------------------------------------------- 1
1-2 SERVICING PRECAUTIONS ------------------------------------------------------------------------------------------------------ 2
1-2-1 General Serving Precautions --------------------------------------------------------------------------------------------2
1-2-2 Insulation Checking Procedure------------------------------------------------------------------------------------------3
1-3 ESD PRECAUTIONS ------------------------------------------------------------------------------------------------------------- 3
2. REFERENCE INFORMATION ------------------------------------------------------------------------------------------------4
2-1 COMPONENT DESCRIPTIONS --------------------------------------------------------------------------------------------------- 4
2-1-1 DVD SANYO HD60 PUH ------------------------------------------------------------------------------------------------4
2-1-2 DVD Processor Chip MTK1389-----------------------------------------------------------------------------------------6
2-1-3 20-Pin, 24-Bit, 192kHz D/A with Volume Control (WM8766) -----------------------------------------------------12
2-1-4 Serial EEPROM, 2K (256 x 8) (24C02) or 16 K (2048 x 8) (24C16) ---------------------------------------------13
2-1-5 8M-BIT [1Mx8/512Kx16] CMOS FLASH MEMORY ---------------------------------------------------------------14
2-1-6 512K X 16 Bit X 2 Banks Synchronous DRAM (A43L0616) -------------------------------------------------------17
3. PRODUCT SPECIFICATIONS------------------------------------------------------------------------------------------------20
4. UPGRADING SYSTEM AND CHANGING THE REGION CODE---------------------------------------------------21
5. OPERATING INSTRUCTION-------------------------------------------------------------------------------------------------22
MAINTENANCE & TROUBLESHOOTING ------------------------------------------------------------------------------------------23
6.DISASSEMBLY AND REASSEMBLY----------------------------------------------------------------------------------------25
7.TROUBLESHOOTING ----------------------------------------------------------------------------------------------------------26
8. ELECTRICAL PART LIST-----------------------------------------------------------------------------------------------------27
9. BLOCK DIAGRAM --------------------------------------------------------------------------------------------------------------38
10. CIRCUIT DIAGRAMS---------------------------------------------------------------------------------------------------------40
11. WIRING DIAGRAM------------------------------------------------------------------------------------------------------------48
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1. PRECAUTIONS
1-1 Safety Precautions
1) Before returning an instrument to the customer, always
make a safety check of the entire instrument, including, but
not limited to, the following items:
(1) Be sure that no built-in protective devices are defective
or have been defeated during servicing.
(1) Protective shields are provided to protect both the
technician and the customer. Correctly replace all
missing protective shields, including any remove for
servicing convenience.
(2) When reinstalling the chassis and/or other
assembly in the cabinet, be sure to put back in place
all protective devices, including, but not limited to,
AC Leakage Test
nonmetallic control knobs, insulating fish papers,
adjustment and compartment covers/shields, and
Any measurements not within the limits specified
isolation resistor/capacitor networks. Do not operate
herein indicate a potential shock hazard that must be
this instrument or permit it to be operated without all
eliminated before returning the instrument to the
protective devices correctly installed and functioning.
customer.
(2) Be sure that there are no cabinet opening through which
(4) Insulation Resistance Test Cold Check-(1) Unplug the
adults or children might be able to insert their fingers
power supply cord and connect a jumper wore
and contact a hazardous voltage. Such openings
between the two prongs of the plug. (2) Turn on the
include, but are not limited to, excessively wide
power switch of the instrument. (3) Measure the
cabinet ventilation slots, and an improperly fitted
resistance with an ohmmeter between the jumpered
and/or incorrectly secured cabinet back cover.
AC plug and all exposed metallic cabinet parts on the
instrument, such as screwheads, antenna, control
(3) Leakage Current Hot Check-With the instrument
shafts, handle brackets, etc. When an exposed
completely reassembled, plug the AC line cord
metallic part has a return path to the chassis, the
directly into a 120V AC outlet. (Do not use an
reading should be between 1 and 5.2 megohm. When
isolation transformer during this test.) Use a leakage
there is no return path to the chassis, the reading must
current tester or a metering system that complies with
be infinite. If the reading is not within the limits
American National Standards institute (ANSI) C101.1
specified, there is the possibility of a shock hazard,
Leakage.
and the instrument must be re-pared and rechecked
before it is returned to the customer.
Current for Appliances and underwriters Laboratories
(UL) 1270 (40.7). With the instrument's AC switch
first in the ON position and then in the OFF position,
measure from a known earth ground (metal water pipe,
conduit, etc.) to all exposed metal parts of the
instrument (antennas, handle brackets, metal cabinets,
screwheads, metallic overlays, control shafts, etc.),
especially and exposed metal parts that offer an
electrical return path to the chassis.
Any current measured must not exceed 0.5mA.
Reverse the instrument power cord plug in the outlet
Insulation Resistance Test
and repeat the test.
1 - Cosmic Digital Technology Limited -
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2) Read and comply with all caution and safety related 5) Components, parts, and/or wiring that appear to have
notes non or inside the cabinet, or on the chassis. overheated or that are otherwise damaged should be
replaced with components, parts and/or wiring that
3) Design Alteration Warning-Do not alter of add to the meet original specifications. Additionally determine
mechanical or electrical design of this instrument. the cause of overheating and/or damage and, if
Design alterations and additions, including but not necessary, take corrective action to remove and
limited to, circuit modifications and the addition of potential safety hazard.
items such as auxiliary audio output connections,
might alter the safety characteristics of this instrument 6) Product Safety Notice-Some electrical and mechanical
and create a hazard to the user. Any design alterations parts have special safety-related characteristics which
or additions will make you, the service, responsible are often not evident from visual inspection, nor can
for personal injury or property damage resulting there the protection they give necessarily be obtained by
from. replacing them with components rated for higher
voltage, wattage, etc. Parts that have special safety
4) Observe original lead dress. Take extra care to assure characteristics are identified by shading, an ( ) or a
correct lead dress in the following areas: ( ) on schematics and parts lists. Use of a substitute
(1) near sharp edges, (2) near thermally hot parts (be replacement that does not have the same safety
sure that leads and components do not touch characteristics as the recommended replacement part
thermally hot parts), (3) the AC supply, (4) high might created shock, fire and/or other hazards.
voltage, and (5) antenna wiring. Always inspect in all Product safety is under review continuously and new
areas for pinched, out-of-place, or frayed wiring. Do instructions are issued whenever appropriate.
not change spacing between a component and the
printed-circuit board, Check the AC power cord for
damage.
1-2 Servicing Precautions
CAUTION: Before servicing Instruments covered by this of its electrical assemblies unless all solid-state
service manual and its supplements, read and follow the device heat sinks are correctly installed.
Safety Precautions section of this manual. d. Always connect a test instrument's ground lead to
the instrument chassis ground before connecting the
Note: If unforeseen circument create conflict between the test instrument positive lead. Always remove the test
following servicing precautions and any of the safety instrument ground lead last.
precautions, always follow the safety precautions. Note: Refer to the Safety Precautions section ground
Remember; Safety First lead last.
(2) The service precautions are indicated or printed on the
1-2-1 General Serving Precautions cabinet, chassis or components. When servicing,
(1) a. Always unplug the instrument's AC power cord from follow the printed or indicated service precautions
the AC power source before (1) removing or and service materials.
reinstalling any component, circuit board, module or (3) The components used in the unit have a specified flame
any other instrument assembly. (2) disconnecting resistance and dielectric strength.
any instrument electrical plug or other electrical When replacing components, use components which
connection. (3) connecting a test substitute in have the same ratings, by ( ) or by ( ) in the
parallel with an electrolytic capacitor in the circuit diagram are important for safety or for the
instrument. characteristics of the unit. Always replace them with
b. Do not defeat any plug/socket B+ voltage interlocks the exact replacement components.
with which instruments covered by this service (4) An insulation tube or tape is sometimes used and some
manual might be equipped. components are raised above the printed wiring board
c. Do not apply AC power to this instrument and/or any for safety. The internal wiring is sometimes clamped
2 - Cosmic Digital Technology Limited -
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to prevent contact with heating components. Install 1-2-2 Insulation Checking Procedure
such elements as they were. Disconnect the attachment plug from the AC outlet and
(5) After servicing, always check that the removed screws, turn the power ON. Connect the insulation resistance meter
components, and wiring have been installed correctly (500V) to the blades of the attachment plug. The insulation
and that the portion around the serviced part has not resistance between each blade of the attachment plug and
been damaged and so on. Further, check the insulation accessible conductive parts (see note) should be more than
between the blades of the attachment plus and 1 Megohm.
accessible conductive parts.
Note: Accessible conductive parts include metal panels,
input terminals, earphone jacks, etc.
1-3 ESD Precautions
Electrostatically Sensitive Devices (ESD) solder removal devices not classified as "anti-static"
can generate electrical charges sufficient to damage
Some semiconductor (solid static electricity) devices can ESD devices.
be damaged easily by static electricity.
Such compo9nents commonly are called Electrostatically (5) Do not use freon-propelled chemicals. These can
Sensitive Devices (ESD). Examples of typical ESD devices generate electrical charges sufficient to damage ESD
are integrated circuits and some field-effect transistors and devices.
semiconductor chip components. The following techniques (6) Do not remove a replacement ESD device from its
of component damage caused by static electricity. protective package until immediately before you are
ready to install it. (Most replacement ES devices are
(1) immediately before handling any semiconductor packaged with leads electrically shorted together by
components or semiconductor-equipped assembly, conductive foam, aluminum foil or comparable
drain off any electrostatic charge on your body by conductive materials).
touching a known earth ground. Alternatively, obtain
and wear a commercially available discharging wrist (7) Immediately before removing the protective materials
strap device, which should be removed for potential from the leads of a replacement ES device touch the
shock reasons prior to applying power to the unit protective material to the chassis or circuit assembly
under test. into which the device will be installed.
(2) after removing an electrical assembly equipped with CAUTION: Be sure no power is applied to the chassis or
ESD devices, place the assembly on a conductive circuit, and observe all other safety precautions.
surface such as aluminum foil, to prevent electrostatic
charge buildup or exposure of the assembly. (8) Minimize bodily motions when handling unpackaged
replacement ESD devices. (Otherwise harmless
(3) Use only a grounded-tip soldering iron to solder or motion such as the brushing together of your clothes
unsolder ESD device. fabric or the lifting of your foot from a carpeted floor
can generate static electricity sufficient to damage an
(4) Use only an anti-static solder removal devices. Some ESD device).
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2. Reference Information
2-1 Component Descriptions
2-1-1 DVD SANYO HD60 PUH
Connector Pin Definition
I/F Signals I/O Pin #
F- 1
F + 2
T + 3
T- 4
C 5
D 6
CD/DVD 7
RF 8
A 9
B 10
F 11
GND-PD 12
VC 13
VCC 14
E 15
NC 16
VR-CD 17
VR-DVD 18
LD-CD 19
MD 20
HFM 21
NC 22
LD-DVD 23
GND-LD 24
4
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4. Block Diagram
Disc
MT1369 MT1369
(RF AMP) (Decode/Servo) AuDdio D/A
Disc motor unit Laser Driver ATAPI WM8720
Laser
Equalizer Buffer Manager
pickup
Error Gen Demodulator SDRAM
Error Correction 1*16MHzX2
PLI
Focus & Tracking
Video D/A
Loading
CS4955
Spindle Focus Track Sied Loading
Motor Coil Coil Motor Motor 1/F
Conn
(frant pannel)
BA5954FP
4ch motor Drive
BA6208
Spindle Motor Drive
Fiash 80c52
Memory System Controller
Spindle motor single for CLV
8Mbit
5
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2-1-2 DVD Processor Chip MTK1389
Features
Super Integration DVD player single chip
z High performance analog RF amplifier
z Servo controller and data channel processing
z MPEG-1/MPEG-2/JPEG video
z Dolby AC-3/DTS/DVD-Audio
z Unified memory architecture
z Versatile video scaling & quality enhancement
z OSD & Sub-picture
z 2-D graphic engine
High Performance Analog RF Amplifier
z Programmable fc
z Dual automatic laser power control
z Defect and blank detection
z RF level signal generato
- Audio
z Dolby Digital (AC -3)/EX decoding
z DTS/DTS -ES decoding
z MLP decoding for DVD-Audio
z MPEG-1 layer 1/layer 2 audio decoding
z MPEG-2 layer1/layer2 2-channel audio
z High Definition Compatible Digital (HDCD)
z Windows Media Audio (WMA)
z Advanced Audio Coding (AAC)
z Dolby ProLogic II
z Concurrent multi-channel and downmix out
z IEC 60958/61937 output
-TV Encod er
z Six 108MHz/12bit DACs
z Support NTSC, PAL-BDGHINM, PAL-60
z Support 525p, 625p progressive TV format
z Automatically turn off unconnected channels
z Support PC monitor (VGA)
z Support Macrovision 7.1 L1, Macrovision 525P
z and 625P
6
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11
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55
54
53
52
51
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48
47
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20
19
18
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16
15
14
13
12
10
9
8
7
6
5
4
3
2
1
SB
SA
SD
SC
MB
MA
TPI
MD
MC
TNI
V20
TEO
FEO
TRO
FOO
FMO
IOA7
IOA6
IOA5
IOA4
IOA3
IOA2
DMO
MDI2
MDI1
LDO1
LDO2
DVSS
USBP
DVDB
DVDA
IOA19
IOA18
DVDD
DVDC
USBM
SGND
AGND
SVDD3
VREFO
CDFOP
CDFON
OP_INP
HIGHA0
OP_INN
DVDD18
TEZISLV
V2REFO
OP_OUT
APLLVSS
DVDRFIP
DVDRFIN
APLLCAP
USB_VSS
65 256
CSO/RFOP
USB_VDD3
APLLVDD3 AVDD3
FG/V_ADIN8
TDI/V_ADIN4
66 255
RFLVL/RFON
TCK/V_ADIN6
TDO/V_ADIN7
TMS/V_ADIN5
TROPENPWM
67 IOWR IREF 254
68 A16 RFGC 253
69 HIGHA7 OSN 252
PWMOUT1/V_ADIN9
70 HIGHA6 OSP 251
71 HIGHA5 CEQN 250
72 HIGHA4 CEQP 249
73 HIGHA3 RFGND 248
* Pinout Diagram
74 DVDD3 CRTPLP 247
75 HIGHA2 HRFZC 246
76 HIGHA1 RFRPAC 245
IOA20 RFRPDC
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77 244
78 IOCS RFVDD3 243
79 IOA1 S_VREFN 242
80 IOOE S_VREFP 241
81 DVDD3 ADCVSS 240
82 AD0 S_VCM 239
83 AD1 ADCVDD3 238
84 AD2 LPFOP 237
85 AD3 LPFIN 236
86 DVSS LPFIP 235
87 AD4 LPFON 234
88 AD5 PLLVDD3 233
89 AD6 IDACEXLP 232
90 IOA21/V_ADIN0 PLLVSS 231
91 ALE JITFN 230
92 AD7 JITFO 229
93 A17 XTALI 228
94 IOA0 XTALO 227
95 DVSS RFVDD18 226
96 UWR RFGND18 225
97 URD SPDIF 224
98 DVDD18 MC_DATA 223
99 UP1_2 DVSS 222
100 UP1_3 ASDATA4 221
101 UP1_4 DVDD18 220
102 UP1_5 ASDATA3 219
103 UP1_6 ASDATA2 218
104 UP1_7 ASDATA1 217
MT1389
105 UP3_0 ASDATA0 216
106 UP3_1 DVSS 215
107 UP3_4 ACLK 214
108 UP3_5 ABCK 213
109 DVDD3 ALRCK 212
110 ICE DVDD3 211
111 PRST SPBCK/ASDATA5 210
112 IR SPLRCK 209
113 INT0 SPDATA 208
114 DQM0 SPMCLK 207
115 DQS0 HSYNC/V_ADIN2 206
116 RD7 YUV7/ASDATA5 205
117 DVSS VSYNC/V_ADIN1 204
118 RD6 DVDD3 203
119 RD5 YUV6/R 202
120 DVSS YUV5/B 201
121 RD4 DACVSSA 200
122 RD3 YUV4/G 199
123 DVDD18 DACVDDA 198
124 RD2 YUV3/CVBS 197
125 RD1 DACVSSB 196
126 RD0 YUV2/C 195
127 RD15 DACVDDB 194
128 DVDD3 YUV1/Y 193
RD14 DACVSSC
RVREF/V_ADIN3
YUV0/CIN
RD31/ASDATA5
DACVDDC
RD11
DVDD3
DVDD3
DVDD3
DVDD3
DVDD18
DVDD18
RA11
RD9
RD8
RD13
DR12
RD10
RD30
RD29
RD28
RD27
RD26
RD25
RD24
RD23
RD22
RD21
RD20
RD19
RD18
RD17
RD16
RCS
RCLKB
RWE
RCLK
VREF
CAS
RAS
CKE
RA0
RA1
RA2
RA3
RA9
RA8
RA7
RA6
RA5
RA4
RA10
FS
DVSS
DQS1
DVSS
DVSS
DVSS
DVSS
DVSS
DQM1
DQM3
DQM2
BA0
BA1
129
130
131
132
133
134
135
136
137
138
139
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141
142
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192
7
PIN DESCRIPTON
PIN Symbol Type Description
1 AGND Ground Ground
2 DVDA Analog input AC coupled DVD RF signal input A
3 DVDB Analog input t AC coupled DVD RF signal input B
4 DVDC Analog input AC coupled DVD RF signal input C
5 DVDD Analog input AC coupled DVD RF signal input D
6 DVDRFIP Analog input Positive input of RF differential signal
7 DVDRFIN Analog input Negative input of RF differential signal
8 MA Analog input DC coupled DVD-RAM main-beam RF signal input A
9 MB Analog input DC coupled DVD-RAM main-beam RF signal input B
10 MC Analog input DC coupled DVD-RAM main-beam RF signal input C
11 MD Analog input DC coupled DVD-RAM main-beam RF signal input D
12 SA Analog input DC coupled DVD-RAM sub-beam RF signal input A
13 SB Analog input DC coupled DVD-RAM sub-beam RF signal input B
14 SC Analog input DC coupled DVD-RAM sub-beam RF signal input C
15 SD Analog input DC coupled DVD-RAM sub-beam RF signal input D
16 CDFON Analog input The general PWM output
17 CDFOP Analog input 2.5V power
18 TN1 Analog input 3 beam satellite PD signal negative input
19 TPI Analog input 3 beam satellite PD signal positive input
20 MDI1 Analog input Laser power monitor input
21 MDI2 Analog input Laser power monitor input
22 LDO2 Analog output Laser driver output
23 LDO1 Analog output Laser driver output
24 SVDD3 power 3.3v power
25 CSO/RFOP Analog output RF positive output
26 RFLVL/RFON Analog output RF negative output
27 SGND Ground Ground
28 V2REFO power 2.8v power
29 V20 power 2.0v power
30 VREFO power 1.4v power
31 FEO Analog output Focusing error output
32 TEO Analog output Tracking error output
33 TEZISLV Inout
34 OP_OUT Inout
35 OP_INN Inout
36 OP_INP Inout
37 DMO Analog output Disk motor control output.PWM output
38 FMO Analog output Feed motor control. PWM output
Tray open output,controlled by microcontroller.
39 TROPENPWM Analog output This is PWM output for TRWMEN27hRW2 =1 or is digital output for
TRWMEN27Hrw2=0
40 PWMOUT1/V Analog output The general PWM output
41 TRO Analog output Tracking servo output.PDM output of tracking servo compensator
42 FOO Analog output Focus servo output. PDM output of focus servo compensator
43 USB_VSS ground ground
44 USBP
45 USBM
46 USB_VDD3 power 3.3v power
47 FG/V_ADIN8 Analog input ADC input
48 TD/V_ADIN4 Analog input ADC input
49 TMS/V_ADIN5 Analog input ADC input
50 TCK/V_ADIN6 Analog input ADC input
51 TDO/V_ADIN7 Analog input ADC input
52 DVDD18 power 1.8v power
53 IOA2 Inout, pull up Microcontroller address 0/GPIO2
54 IOA3 Inout, pull up Microcontroller address 0/GPIO3
8
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PIN Symbol Type Description
55 IOA4 Inout, pull up Microcontroller address 0/GPIO4
56 IOA5 Inout,pull up Microcontroller address 0/GPIO5
57 IOA6 Inout, pull up Microcontroller address 0/GPIO6
58 IOA7 Inout, pull up Microcontroller address 0/GPIO7
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