Kenwood DV-6050 User manual

MULTIPLE DVD/VCD/CD PLAYER
DV-6050
SERVICE MANUAL
© 2002-10 PRINTED IN KOREA
B51-5831-00 (K/K) 1382
In compliance with Federal Regulations, following are repro-
duction of labels on, or inside the product relating to laser
product safety.
KENWOOD Corp. certifies this equipment conforms to DHHS
Regulations No.21 CFR 1040. 10, Chapter 1, subchapter J.
DANGER : Laser radiation when open and interlock defeated.
AVOID DIRECT EXPOSURE TO BEAM.
Caution : No connection of ground line if disassemble
the unit. Please connect the ground line on
rear panel, PCBs, Chassis and some others.
73
0
POWER
STANDBY
ON OFF
4¢
DISC SKIP
SEQUENCE MODE
DISC 1 DISC 2 DISC 3 DISC 4 DISC 5
Cabinet panel
(A60-2323-08)
Crystal Window
(B10-3936-08)
Con DIN socket
(E68-0018-08)
Top cover
(A01-3854-08)
Button
(K29-8238-08)
Button
(K27-2502-08)
Knob(POWER)
(K27-2503-08)
Con phono socket
(E63-1311-08)x2
Clamp AC cord
(J42-0350-08)
Wire-MCRDM
(E30-7250-08)
Slide switch
(S62-0115-08)
Con DIN socket
(E63-1192-08)
Con phono socket
(E63-1244-08)
70%

Batteries(R03/AA) ...(2)
Please confirm that the following accessories are present.
Audio video cord (Red, White, Yellow) ...(1)
(E30-2990-08)
Remote control unit ...(1)
(A70-1631-08)
Coaxial cable ...(1)
(E30-7235-08)
DV-6050
2
CONTENTS / ACCESSORIES
CONTENTS / ACCESSORIES .................................. 2
DISASSEMBLY FOR REPAIR....................................3
CIRCUIT DESCRIPTION ............................................4
ADJUSTMENT ..........................................................19
INTERCONNECTION DIAGRAM .............................20
PC BOARD .............................................................. 21
SCHEMATIC DIAGRAM .......................................... 28
EXPLODED VIEW ....................................................43
PARTS LIST..............................................................44
SPECIFICATIONS ......................................Back cover
Contents
Accessories
The marking of products using lasers
(For countries other than U.S.A., U.S.-
Military and Canada)
The marking this product has been classified as Class
1. It means that there is no danger of hazardous
radiation outside the product.
Location: Back panel
CLASS 1
LASER PRODUCT Inside this laser product, a laser diode classified as
Class 2 laser radiation is contained as alerted by the
internal caution label shown above. Do not stare into
beam.
Location: DVD laser pick-up unit cover inside this
product
CAUTION
VISIBLE LASER RADIATION
WHEN OPEN. DO NOT

DV-6050
3
DISASSEMBLY FOR REPAIR
1x9
1. How to open the tray if it does not come out.
1. Remove the plastic plate.
2. Turn the gear fully CCW using a flat driver and so on in
the drawing through the hole on the loading chassis bot-
tom.
3. Pull out the tray frontward by hand when it comes just
out.
Disassembling and Assembling the DVD mechanism, DVD B'D and OUT B'D FTMS for Video Sig-
nal Adjustment
1. To release the rear panel, remove screws (1x9)and optical cap.
x2
4
2
POWER
SWITCH
LEVER
3
3
4
4N314 N315 N312
4
3
2. Remove screws (2x2) and OUT B'D FTMS.
3. Remove connectors (3X3), power switch lever and screws (4x4).
Fig. 1
Fig. 2

DV-6050
4
DISASSEMBLY FOR REPAIR
x4
5
BOTTOM VIEW
CN1
CN74
CN15
CN53
CN33
CN55 CN2
4. Pull out the DVD mechanism horizontally.
5. Up-side-down the DVD mechanism.
6. Remove screws (5x4) and DVD B'D.
7. Unplug the connectors ( CN15,CN53,CN55,CN74) and
disconnect 3 flexible cables (CN1,CN2,CN33).
8. For the assembly procedure, follow the item 5 to 3 in
reverse.
9. Set up the DVD B'D on the top as figure 5.
Fig. 3
Fig. 4
10. Connect a jig (E35-2113-05) to CN33 instead of an origi-
nal flexible cable (E35-1990-05).
CN33 Parts No. Remark
(Flexible cable)
Original E35-1990-05 22cm
ó
JIG E35-2113-05 35cm
*
* (This is a jig for video signal adjustment, after adjusted
it put back to an original flexible cable.)
11. Plug in the connectors (CN15,CN53) and connect 2 flexi-
ble cables (CN1,CN2).
* Note : The connectors (CN55, CN74) are for audio sig-
nal line so that no necessary to put it back when
video signal output adjustment.
CN1
CN33
CN53
CN15
CN2
GND
Use an Instalting Material
12. Follow the item 2 and 1 in reverse.
13. Gruond DVD B'D and rear panel as figure 5.
14. Follow the video signal output adjustment procedure.
Fig. 5

DV-6050
5
CIRCUIT DESCRIPTION
VDAC : NTSC/PAL ENCODER
VOUT
FLI2200
CS4382
IC6
IC10
IC30
IC28
IC41
IC32
IC50
IC3
IC1
ADV7170SU
ADV7196
IC26
IC11 IC10
M95040
IC11
TVP503 AN8703FH VOUT
AVIF 2 SPDIF
3
6chOUT
2chOUT
88
MN5B00
3
SIO1 3
816
BUS 16 BU2092FV
3 SST39VF160 3
I2C
SIO0 API 3
PU FEP MN103S26E
SODC
AV Decoder
MN67 7531
64M SDRAM
VDAC
ADAC
SERIAL-
PARALLER
FLASH
ROM
16M bits
EEROM
4k bytes
SETUP
REGION
KEY
SUB µcom
MN101C35D
KEY FL
LED
MECHA.
CONTROL
REMOTE
CONTROLLER
WATER MARK
DETECTION
DVD µcom
MN102LP62G
Progre
ssive
VDAC
DRAM
2Mbyte
Driver ADAC
1. Microcomputer Periphery Block Diagram

DV-6050
6
CIRCUIT DESCRIPTION
Pin No. Pin Name I/O Pin Description
1 DATA OUT O Communication data output to DVD system microcomputer.
2 DATA IN I Communication data input from DVD system microcomputer.
3 CLOCK I Communication clock input from DVD system microcomputer.
4~7 NC O Unused.
8 VDD - Positive power supply (+5.0V).
9 X-TAL O Master clock (8.0MHz) output.
10 EXTAL I Master clock (8.0MHz) input.
11 VSS - GND
12 NC I Unused.
13 NC O Unused.
14 NC(MMCD) I Unused.
15 VREF - AD converter reference voltage.
16~18 AD INPUT KEY (1~3) I AD input key (1~3).
19 INPUT REGION TYPE 2 I AD input region type 2 (0V).
20 INPUT MODEL TYPE I AD input model type (5.0V).
21 INPUT REGION TYPE 1 I AD input region type 1(0.64V).
22 UP SW - Unused.
23 DOWN SW - Unused.
24 VREF + - AD converter reference voltage.
25 CE I Chip enable input.
26 RST I Reset signal input.
27 OPEN SW I Open switch input from mechanism.
28 CLOSE SW I Close switch input from mechanism.
29 ROULETTE CCW O Control port of rotary motor.
30 ROULETTE CW O Control port of rotary motor.
31 OPEN/CLOSE MOTOR CCW O Control port of tray motor.
32 OPEN/CLOSE MOTOR CW O Control port of tray motor.
33 REMOCON CONTROL I Input port of remote controller signal.
34 MECHA DISC SENSOR I Detection port of disc sensor for mechanism.
35 MECHA POSITION SENSOR I Detection port of position sensor for mechanism.
36,37 NC I Unused.
38 OPEN/CLOSE CHECK I Unused.
39 EEPROM DATA OUT O EEPROM serial data out.
40 EEPROM DATA IN I EEPROM serial data input.
41 EEPROM CLOCK OUT O EEPROM serial clock input.
42 LED OUT 1(DISC1) O On/off control port for disc 1 LED.
43 LED OUT 2(DISC2) O On/off control port for disc 2 LED.
44 LED OUT 3(DISC3) O On/off control port for disc 3 LED.
45 LED OUT 4(DISC4) O On/off control port for disc 4 LED.
46 LED OUT 5(DISC5) O On/off control port for disc 5 LED.
47 EEPROM CS O Chip select output to EEPROM.
48~50 NC O Unused.
51 G14 O Unused.
52 G13 O Unused.
53~64 G12~G1 O FL grid output (G12~G1).
65~86 P02~P23 O FL segment output (P02~P23).
87 P01 O FL segment output (P01).
88~96 NC O Unused.
97 VIDEO MUTE O Video mute control.
98 AUDIO MUTE O Audio mute control.
99 POWER CONTROL O Power relay control.
100 VPP - FL negative power supply.
1-1 Pin Description of Sub Microcomputer : MN101C35D (FRONT, IC11)

DV-6050
7
CIRCUIT DESCRIPTION
Pin No. Pin Name I/O Pin Description Logic
HL
1 WAIT I Bus wait port.
2NRD(ODC/AVDEC O Bus read port for ODC/AV Decoder/SRAM.
/SRAM)
3 NWEL O Bus read port for AV Decoder/RAM.
4NWEH(ODC/AVDEC O Bus read port for ODC/AV Decoder/SRAM/ROM.
/SRAM/ROM)
5 RAMCS(SRAM) O SRAM chip select.
6 ODCCS O ODC chip select.
7 AVCS(AVDEC) O AV decoder chip select.
8 ROMCS(ROM) O Flash ROM chip select.
9 SCLOCK(VDAC) I/O VDAC 12C clock.
10 SDATA(VDAC) I/O VDAC 12C data.
11 FRD(ROM) O Flash ROM read port.
12 WORD I CSO bus width.
13~16 CPUADR(0~3) O Bus address (0~3).
17 VDD - Supply voltage (+3.3V).
18 SYSCLK(AVDEC) O External clock output for AV decoder.
19 VSS - Connected to ground.
20 XI I Unused.
21 XO O Unused.
22 VDD - Supply voltage (+3.3V).
23 OSCI(CLK135) I System clock input (13.5MHz).
24 OSCO O Unused.
25 MODE I Processor mode selection. Expension
Mode
26~33 CPUADR4~11 O Bus address (4~11).
34 AVDD - Supply voltage (+3.3V).
35~42 CPUADR12~19 O Bus address (12~19).
43 VSS - Connected to ground.
44 CPUADR20 O Bus address (20).
45 CDH O Switching of DAC. CD Except
CD
46 HFMON O HF monitor output of ADSC.
47 25BSY O Writing busy data output. Normal Busy
48 KMODE I Selection of writing mode for the ROM. Writing Normal
49 196BSY I Busy data input. Normal Busy
50 FROMWR O Enable control for writing jig.
51 TRVSW I Input port of traverse switch. Off On
52 AMUTE O Audio mute control.
53 FEPRST O FEP reset output.
54 VDD - Supply voltage (+3.3V).
55 FEPEN O Enable output to FEP (traverse).
56 NC O Unused.
57 STBSACD O Unused.
58 STBSP1 O Strobe output to serial-parallel converter.
59 STBDAC1 O Strobe output to ADAC.
60 STBPSL O Strobe output.
61 VSS - Connected to GND.
62 MSREADY I SACD ready signal input.
63 E2CS O Chip select to EEPROM.
64 PROGSW I Input port of program switch. Progressive Interlace
65 ICRST O Reset signal output to periphery ICs.
66 VDD - Supply voltage (+3.3V).
1-2 Pin Description of DVD Microcomputer : MN102LP62G (DVD AUDIO FRONT END, IC26)

DV-6050
8
CIRCUIT DESCRIPTION
Pin No. Pin Name I/O Pin Description
1 BIAS1 I Input of bias1.
2 VIN1 I CH1 input.
3 VIN2 I CH2 input.
4 OPIN (+) I Not inverted input of OP-AMP.
5 OPIN (-) I Inverted input of OP-AMP.
6 OPOUT O Output of OP-AMP.
7 AGND - Analog ground.
8 MGND - GND
9 P.VCC2 - Power supply (+5.0V)
10 MUTE2 - Mute control of CH2.
11 DGND - Digital ground.
12 V02 (-) O Driver CH2 output (-).
13 V02 (+) O Driver CH2 output (+).
14 V01 (-) O Driver CH1 output (-).
15 V01 (+) O Driver CH1 output (+).
Voltage AD INPUT KEY 1 AD INPUT KEY 2 AD INPUT KEY 3
✽ Pin 16 ✽ Pin 17 ✽ Pin 18
0V PLAY/PAUSE STOP DISC1
0.64V - - -
1.35V OPEN/CLOSE SKIP UP/NEXT DISC2
2.18V DISC SKIP SKIP DOWN/PREV DISC3
2.75V - - DISC4
3.40V - - DISC5
Pin No. Pin Name I/O Pin Description Logic
HL
67 SCLK0 O SIO0 clock output to communicate between main
microcomputer and DVD system microcomputer.
68 SI0 I SIO0 data input to communicate between main
microcomputer and DVD system microcomputer.
69 SO0 O SIO0 data output to communicate between main
microcomputer and DVD system microcomputer.
70 SCLK1 O SIO1 clock output for control ICs.
71 SI1 I SIO1 data input for control ICs.
72 SO1 O SIO1 data output for control ICs.
73 PULL UP0 I Unused.
74 PULL UP1 I Unused.
75 NMI I Unused.
76 SODCINT0 I Interruption port from SODC.
77 SODCINT1 I Interruption port from SODC.
78 AVINT0 I Interruption 0 port from AV decoder.
79 WMINT I Interruption port from Water Mark Detector.
80 AVINT1 I Interruption port 1 from AV decoder.
81 ADSEP I Unused.
82 RST I Reset signal input.
83 VDD - Supply voltage (+3.3V).
84~91 CPUDT0~7 I/O Bus data (0~7) input and output.
92 VSS - Connected to GND.
93~100 CPUDT8~15 I/O Bus data (8~15) input and output.
2. Key Matrix ✽ Pin Numbers of Sub Microcomputer
3. Pin Description of IC's
3-1 4ch BTL Driver : BA5823FM (DVD AUDIO FRONT END, IC5)

DV-6050
9
CIRCUIT DESCRIPTION
Pin No. Pin Name I/O Pin Description
1 LPC1 I Laser pin input (DVD head).
2 LPCO1 O Laser drive output (DVD head)pin.
3 LPC2 I Laser pin input (CD head).
4 LPC02 O Laser drive output (CD head)pin.
5 VFO SHORT - Setting pin for RF short mode.(Terminated to ground.)
6 TBAL I Tracking balance control input.
7 FBAL I Focus balance control input.
8 POFLT - Detection filter of phase difference.
9 DTRD - Data read.
10 DGT - ID gate.(Terminated to ground.)
11 STANDBY - Setting pin for standby mode.
12 SEN I Serial transfer enable input.
13 SCK I Serial transfer clock input.
14 STDI I Serial transfer data input.
15 RSCL - Connection pin for reference current generation resistance.
16 JLINE - Connection pin for input resistance.
17 TEN I Inverted input pin of tracking error output amplifier.
18 TEOUT O Tracking error signal output.
19 AGCBAL - AGC balance.
20 ASOUT O Focus addition output.
21 FEN I Inverted input pin of focus error output amplifier.
22 FEOUT O Focus error signal output.
23 AGCOFST - AGC off set.
24 MON - Monitor pin for checking.
25 AGCLVL - AGC level.
26 GND2 - Ground for AGC.
27 VREF2 O VREF for AGC.
28 VCC2 - Power supply for AGC.
29 VHALF O VCC3/2
30 DFLTON O AGC/equalizer output (-)
31 DFLTOP O AGC/equalizer output (+)
32 DCFLT - Capacitance connection for filter output.
33 GND3 - Ground for logic.
34 RFDIFO O Radial differential signal output.
35 RFOUT O RF addition amp output
36 VCC3 - Power supply for logic.
37 RFC - RF delay correction amplifier filter.
Pin No. Pin Name I/O Pin Description
16 V04 (+) O Driver CH4 output (+).
17 V04 (-) O Driver CH4 output (-).
18 V03 (+) O Driver CH3 output (+).
19 V03 (-) O Driver CH3 output (-).
20 MGND - GND
21 MUTE4 - Mute control of CH4.
22 P. VCC2 - Power supply (+9.0V)
23 MGND - PRE VCC
25 RREVCO - Terminated to VCC (+9.0V).
25 VIN3 I CH3 input.
26 LDIN I Loading input of CH4.
27 BIAS2 I Input of bias2.
28 TRIN I Traverse input of CH4.
29 MUTE3 - Mute control of CH3.
30 CNT - Control pin.
3-2 Front End Processor IC : AN8703FH (DVD AUDIO FRONT END, IC6)

DV-6050
10
CIRCUIT DESCRIPTION
Pin No. Pin Name I/O Pin Description
1 NINT0 O Unused.
2,5 NINT(1,2) O Interruption signal (1,2) to DVD CPU.
3,31,57,78,125,143, VDD3 - Power supply (+3.3V) for IO.
156,162,169
4,19,32,60,77,81,
126,144,155,163, VSS - GND
170
6 WAITODC O Wait signal to DVD CPU.
7 NMRST O Reset output to DVD CPU (unused).
8 DASPST I Initial set point of DASP signal.
9~17,22~30 CPUADR(17~0) I Address (17~0) from DVD CPU.
18,76,152 VDD18 - Power supply (+1.8V) for IO.
20,58 DRAMVDD18 - Power supply (+1.8V) for DRAM.
21,59 DRAMVSS - Ground for DRAM.
33 DRAMVDD3 - Power supply (+3.3V) for DRAM.
34 MCS I Chip select signal from DVD CPU.
35 NWR I Write signal from DVD CPU.
36 NRD I Read signal from DVD CPU.
37~44 CPUDT(7~0) I/O DVD CPU data (7~0).
45 CLKOUT O Unused.
46 MMOD I Switching signal for test mode.
47 NRST I Reset input.
48 MSTPOL I Switching pin of polarity for master pin.
49 SCLOCK I Debug serial clock.
50 SDATA I Debug serial data.
Pin No. Pin Name I/O Pin Description
38 DCRF - DC cut filter pin for RF addition amplifier.
39 OFTR O OFTR output pin.
40 BDO O BDO output pin.
41 RFENV O RF envelope output.
42 BOTTOM - RF envelope bottom detection filter pin.
43 PEAK - RF envelope peak detection filter pin.
44 AGCG - AGC loop filter pin.
45 AGCO - AGC off set elimination filter pin.
46 TESTSG I Single signal input for test.
47 RFINP I RF differential signal input (+).
48 RFINN I RF differential signal input (-).
49 VIN5 I Internal RF (CD) input pin 1.
50 VIN6 I Internal RF (CD) input pin 2.
51 VIN7 I Internal RF (CD) input pin 3.
52 VIN8 I Internal RF (CD) input pin 4.
53 VIN9 I External RF (DVD) input pin 2.
54 VIN10 I External RF (DVD) input pin 1.
55 VCC1 - Power supply for servo.
56 VREF1 O VREF for servo.
57 VIN1(VB) I Internal RF (DVD) input pin 1.
58 VIN2VC) I Internal RF (DVD) input pin 2.
59 VIN3(VD) I Internal RF (DVD) input pin 3.
60 VIN4(VA) I Internal RF (DVD) input pin 4.
61 GND1 - Ground for servo.
62 VIN11(VE) I 3 beam sub (CD) RF input pin 2.
63 VIN12(VF) I 3 beam sub (CD) RF input pin 1.
64 HDTYPE - Switching pin of reference voltage or APC circuit polarity for DVD.
3-3 Digital Servo Control IC : MN103S26E (DVD AUDIO FRONT END, IC10)