15. REPLACEMENT PARTS LIST .........................................................................................................79
16. PACKING OF THE SET ...................................................................................................................92
MODELS
In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its
original condition and only parts identical to those specified
be used.
CONTENTS
D V-L70W
Page
SHARP CORPORATION
1
DV-L70S
DV-L70BL
DV-L70W
1. IMPORTANT SAFEGUARDS AND PRECAUTIONS
2
åå
åCAUTION
åå
BEFORE BATTERY DESTROY
ËË
Ë NICKEL-CADMIUM BATTERY
ËË
The following program is available in the United States. Please consult local environmental authorities concerning the
availability of this or other programs in your area.
The RBRCTM Seal
SHARP participates in the RBRCTM* Nickel-Cadmium Battery Recycling Program in the United States. The RBRCTM
Seal on our battery pack contained in our product indicates that SHARP is voluntarily participating in an industry
program to collect and recycle these batteries. The RBRCTM program provides you with a convenient alternative
to placing spent Nickel-Cadmium battery packs into the trash or municipal waste stream, which is illegal in some
areas. At the end of their useful life, the Nickel-Cadmium battery can be dropped off at the nearest collection center
for recycling. For information on the nearest collection center, call 1-800-8-BATTERY or your local recycling
center. If you are located outside the United States, contact your local authorities for information concerning proper
disposal and/or recycling of this battery. SHARP's involvement in this program is part of our commitent to protecting
our environment and conserving natural resources.
[Footnote] *RBRC
TM is a trademark of the Rechargeable Battery Recycling Corporation.
DV-L70S
DV-L70BL
DV-L70W
ËË
Ë NICKEL-METAL HYDRIDE BATTERY
ËË
ËË
Ë LITHIUM or LITHIUM-ION BATTERY
ËË
ËË
Ë SEALED LEAD BATTERY
ËË
Battery disposal
Contains the above Rechargeable Battery. must be recycled or disposed of properly.
Remove the Battery from the products and contact Federal or State Environmental Agencies for information on
recycling and disposal options.
3
DV-L70S
DV-L70BL
DV-L70W
2. FEATURES
7" LCD Screen and Stereo Speakers
• A big 7" LCD screen and built-in stereo speakers provide exciting DVD viewing, even without connecting to a TV.
2-WAY Power Supply (Battery pack is sold separately.)
• A 2-way power supply allows operation using the supplied AC adapter for indoor play, or the battery pack sold
separately for outdoor play.
Compact, Lightweight Design
• About the size of a movie DVD case, your DVD player is designed to go along just about anywhere.
High-Resolution Images, High-Quality Sound
• A high-resolution 336,960-pixel LCD screen produces images of outstanding quality.
• Digital gamma correction and digital super picture provide more realistic image detail.
• Dolby Virtual ensures richer sound from two built-in speakers.
AV input/output, optical digital output jack equipped as standard
• An optical digital output jack (which doubles as the audio input/output jack) can be used to output a stream of *1Dolby
Digital 5.1 channel audio, *2DTS digital audio and Audio MPEG. Connecting a Dolby Digital/DTS/Audio MPEG digital
surround processor or amplifier to this jack creates an environment of amazingly powerful surround sound.
• The AV input/output jack can be used to connect a video deck or camcorder to your DVD player. Or you can use these
jacks to connect to a TV for big-screen viewing. (Output only is supported for S-video. An S-video signal cannot be
input to your DVD player.)
*1Manufactured under license from Dolby Laboratories. "Dolby", "Pro Logic" and the double-D symbol are trademarks
of Dolby Laboratories.
Confidential Unpulished Works. C 1992-1997 Dolby Laboratories, Inc. All rights reserved.
*2"DTS" and "DTS Digital Surround" are trademarks of Digital Theater Systems, Inc.
3. SPECIFICATIONS
Product: Portable DVD Video Player
Model: DV-L70S/BL/W
Signal System: NTSC/PAL
Supported Disc Types: DVD (Region Number 2, ALL), Video CD, Audio CD (DV-L70S/BL)
DVD (Southeast Asia: Region Number 3, ALL/Australia and New Zealand:
Region Number 4, ALL), Video CD Audio CD (DV-L70W)
Video Input/Output: Input/Output Jack: Mini jack × 1 (accepts supplied S-video/video cord)
Input/Output Levels: 1Vp-p (75Ω)
S-Video Output: Y Output Level: 1Vp-p (75Ω)
C Output Level: 0.286Vp-p (75Ω)
Output Jack: Mini jack (shared with Video In/Out) × 1
(accepts supplied S-video/video cord)
Audio Input/Output: Input /Output Jack: Mini jack × 1 (accepts supplied audio cord)
Input/Output Levels: 2Vrms (1kHz, 0dB)
Digital Audio Interface: Optical digital output: Mini jack (shared with audio In/Out)
Audio Output: 0.8W + 0.8W
Headphones Output: Output Jack: Mini jack (stereo)
(71/4" × 519/64" × 37/64") without protruding parts
Weight: 430g (0.95 lbs)
Specifications are subject to change without notice.
Weight and dimensions are approximate.
Digital Output (linear PCM)
· The digital output format used in this DVD video player is linear PCM audio sampling at 44.1 kHz or 48 kHz.
Linear PCM sound for DVD video discs sampled at 96 kHz cannot be output digitally.
Check the disc jacket for information on the audio sampling used.
3-1. ACCESSORIES
Accessories:Audio Cord x 1, S-Video/Video cord x 1, AC Power Cord x 1, UM/SUM-3 battery x 2,
Remote Control Unit x 1, Earphones x 1, AC Adapter x 1, Operation Manual x 1
5
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4. PART NAMES
For details on the use of each control.
6
5. DISASSEMBLY METHOD
1
2
A
Power SW Button
16
17
7
7
8
8
9
Space Washer
Space Washer
5-1. DISASSEMBLY METHOD
1.Remove the nine screws 1.
2. Loosen the two screws 2.
3. After opening the LCD unit, remove the hinge claw of cabinet A to detach it from
cabinet B.
Note: The power SW button is also removed. Be careful not to forget it when
assembling the unit.
4. Remove the FFC A from the main PWB.
5. Remove the screws 3.
Note: Check the screws before assembling because they are different
depending on the right and left hinges.
6. Remove the connector 4 from the main PWB.
7. Remove the pickup FPC/sled lead connector 5.
8. Remove the screws 6 fixing the DC jack PWB.
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5
6
5
4
3
9. Remove the four LCD rubber caps 7.
10. Remove the four screws 8.
Note: Be careful not to forget to put space washers when assembling because
they are tightened with the above screws.
11. Remove the cabinet D. At this time, remove engagement claws (two on the
upper LCD panel, two on the right and left sides, two on the lower LCD panel).
Note: Do not break the claws on the right and left sides by opening cabinet C
a little.
12. Remove the right and left speaker connectors 9.
13. Remove the screw 0.
14. Remove the FPC q from the connector.
15. Remove the screw w.
16. Remove the FPC e from the connector.
17. Remove the screw r.
18. Remove the connector t.
10
11
14
11
12
13
15
19. Remove the four screws y.
20. Remove the three claws on the control panel (front: 2 pcs., rear: 1 pc.).
21. Open the disc cover u 180˚ to remove it from cabinet A.
6-2. ADJUSTMENT PROCEDURE AND METHOD OF LCD PWB SIDE
1. 7.5V adjustment
Adjustment VRR1102
Adjustment PointPut a voltmeter between 6PIN (+7.5V) and 4PIN (GND) of TP1191.
Input Signal/SettingNo input
Adjustment MethodAdjust it to 7.50±0.02V.
2. Free run adjustment
Adjustment VRR1104
Adjustment PointObserve the 3PIN of TP1191 with a frequency counter.
Input Signal/SettingNo input, external input mode
Adjustment MethodAdjust it so as to get the HSY frequency of 15.625±0.01KHz
(64.0µS).
3. Screen center adjustment
Adjustment VRR1103
Adjustment PointVisual observation of the panel
Input Signal/SettingMonoscope full screen
Adjustment MethodAdjust the screen so that it is located in the center.
HSY
15.625KHz
(64.0µS)
8
6-3. CHECK ITEMS OF LCD PWB SIDE
1. Power supply voltage check
Adjustment PointPut voltmeters in 4PIN (GND), 5PIN (-16V) and 7PIN (13V) of TP1191.
Input Signal/SettingCheck in the DVD mode.
Adjustment MethodCheck that each voltage indicates -16±1V and 13±0.5V respectively.
2. Free run check
Adjustment PointCheck the panel visually by connecting to the checker.
Input Signal/SettingExternal input
Adjustment MethodCheck that the horizontal movement of ODS is 1 mm or less when
inputting a signal in the external input mode with no signal input.
Input
6-4. ADJUSTMENT PROCEDURE AND METHOD OF MAIN PWB SIDE
1. Press the UP+DOWN key is pushed at the same time, and made power source on.
2. It moves to the special mode(SP MODE), and a BACKLIGHT(HI/LOW/OFF) key is pushed and turned off.
3. After setting is completed, a power source is turned off.
4. Again, a UP+DOWN key is pushed at the same time, and a power source is turned on and made special mode.
5. An INPUT/ DVD key is pushed, and it becomes adjustment mode.
6. Each operation in the adjustment mode changes as follows:
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(1) Switch the adjustment block with the TILT key input.
DAC adjustmentOPT adjustmentBAT adjustment
(2) Perform paging of each adjustment block with the RETARN key.
TV1
TV2
TV3
(3) Switch each adjustment item with the menu key input.
TV1 adjustment
GAM0
TV2 adjustment
WB-RWB-BSCOLSTIN
TV3 adjustment
COMOSDHBBRIGAM2
SBRIGPOSCONT
(4) Change each adjustment value with the left or right cursor key.
9
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1. DAC adjustment
(1) TV1 adjustment
Adjustment VRGAM0
Initial value "44" adjustment is unnecessary.
Adjustment VRSBRI
Adjustment Point————
Input Signal/SettingIt is set in "56".
Adjustment VRGPOS
Adjustment PointConnect the oscilloscope to COM output (6PIN of TP1901) and GND.
Input Signal/SettingBlack-and-white 10STEP
Adjustment MethodAdjust the common amplitude to 8.0±0.1Vp-p.
Adjustment VRGAM2
Adjustment PointConnect the oscilloscope to 3PIN (VG) and GND of TP1901.
Input Signal/SettingBlack-and-white 10STEP
Adjustment MethodAdjust the Vpp of VG to 4.3±0.1Vp-p.
8.0±0.1Vp-p
4.3±0.1Vp-p
Adjustment VRCONT
Adjustment PointConnect the oscilloscope to 3PIN (VG) and GND of TP1901.
Input Signal/SettingBlack-and-white 10STEP
Adjustment MethodAdjust the Vpp of VG to 3.3Vp-p.
White level
3.3±0.1Vp-p
Sync.
Black level
(2) TV2 adjustment
Adjustment VRWB-R
Adjustment PointConnect the oscilloscope to 3PIN (VG) and 4PIN (VR) of TP1901.
Input Signal/SettingBlack-and-white 10STEP
Adjustment MethodAdjust the white balance (red) so that peak-peak the equal of green and red output become equal.
Adjustment VRWB-B
Adjustment PointDual the oscilloscope to 3PIN (VG) and 5PIN (VB) and GND of TP1901.
Input Signal/SettingBlack-and-white 10STEP
Adjustment MethodAdjust the white balance (blue) so that peak-peak the equal of green and blue output become equal.
Adjustment VRSCOL
Adjustment PointConnect the oscilloscope to 5PIN (VB) and GND of TP1901.
Input Signal/Setting100% color bar
Adjustment MethodAdjust the blue amplitude of the color bar (black level to peak level) to 3.8±0.1Vpp.
10
Adjustment VRSTIN
27mm
B brightness
Adjustment PointConnect the oscilloscope to 5PIN (VB) and GND of TP1901.
Input Signal/Setting100% color bar
Adjustment MethodIt is adjusted so that shakes of the waveform of the blue signal of the color bar may become the
smallest.
(3) TV3 adjustment
Adjustment VRCOM
Adjustment PointSpecified adjustment jig (illuminometer) or visual observation
Input Signal/SettingNo input state
Brightness: Center
Perform it in a combination of PWB and the liquid crystal panel which will be supplied as
products finally.
Adjustment Method• When using the specified adjustment jig
Connect the output of jig to the oscilloscope and
adjust the waveform to the minimum point.
At this time, perform the adjustment several times
to fix the optimal point because the measuring value
hardly changes around the optimal point.
• In case of visual adjustment
Stand or tilt the panel as shown in the figure and check
by shaking your head and seeing whether stripes appear.
If the adjustment is improper, you will see stripes in the
longitudinal direction. Perform the adjustment so that they
do not appear.
(Type drawing)
Adjust within the above
range to fix the optimal point
Optimal point
Direction of stripe
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Adjustment VROSDH
Adjustment PointVisual observation
Adjustment methodAdjust the OSDH of TV3 to 27 mm from the right of screen.
Adjustment VRB BRI
Adjustment methodSet the B brightness to “76”.
2. OPT adjustment
Adjustment VROPT adjustment
InitializationIt is set respectively in WIDE "03", OSDV"00", BL"01", PAL"00".
3. BAR adjustment
Adjustment VRBAT adjustment
InitializationStabilized power supply, in the body, connection.
It is made DVD start rise state, and a BACKLIGHT(HI/LOW/OFF) key is pushed and made "HI".
The voltage of the stabilized power supply is adjusted to become 6.4±0.05V in the stabilized
power supply connection part (at DC JACK).
Adjustment MethodIt is set so that the numerical value of the BAT display may become "00"
11
DV-L70S
DV-L70BL
DV-L70W
6-5. CHECK AND READJUSTMENT
1. Free run check
Adjustment VRR1104
Adjustment PointVisual observation
Input Signal/SettingExternal input
Check andCheck that the horizontal movement of OSD position is 1 mm or less
Readjustmentwhen inputting a signal in the external input mode with no signal input.
If it is more than 1 mm, adjust it so as to get 1 mm or less.
2. Screen position check
Adjustment VRR1103
Adjustment PointVisual observation of panel
Input Signal/SettingMonoscope full screen
Check andCheck whether the screen is located in the center. If it is not located in the center, adjust it to the
Readjustmentcenter.
3. Luminance/gradation check
Adjustment VRGPOS
Adjustment PointComparison with the standard set
Input Signal/Setting10STEP signal
Check andCheck whether the luminance and gradation of 10STEP signal are not different in comparison
with the standard set. If they are different, adjust them so as to get equal to the standard set.
Input
4. Depth check
Adjustment VRS depth
Adjustment PointComparison with the standard set
Check andCheck whether the depth of color is not different in comparison with the standard set. If it is
Readjustment different, adjust it so as to get equal to the standard set.
5. Tint check
Adjustment VRS tint
Adjustment PointComparison with the standard set
Check andCheck whether the tone is not different in comparison with the standard set. If it is different, adjust
Readjustmentit so as to get equal to the standard set.
12
DV-L70S
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DV-L70W
7. TEST MODE
When a power source is put with pushing a key.
Adjustment ModeA power source is put with pushing and .
ROM renewal modeIt is put with pushing a playback key and a still key.
A power source is put.
When there is a disc Error rate display mode (There are a DVD and CD mode of it, and a disc is put, and a key manipulates.)
When there isTest mode (Version display mode, color bar pattern display mode, mecha test mode.)
[The flow of the test mode]
A power source is put, and closing, a playback key and a stop key are pushed for about two seconds at the same time
without a disk the disk cover. It goes into the (test mode.
Test mode initial image plane
F0000000 00000000
<The "1" key of the remote controller is pushed.>
The preparation date display of the program
10000000 ∗∗∗∗∗∗∗∗
(Last updata)
The "playback" key of the remote controller is pushed.
Model number display
10000001 ∗∗∗∗∗∗∗∗
(Model number)
The "playback" key of the remote controller is pushed.
The preparation date display of the program
10000002 ∗∗∗∗∗∗∗∗
(Program ver.)
The "playback" key of the remote controller is pushed.
Region code display
10000003 ∗∗∗∗∗∗∗∗
(Region code)
The "reactivation" key of the remote controller is pushed.
Microcord version display
10000004 ∗∗∗∗∗∗∗∗
(Microcode ver.)
The "playback" key of the remote controller is pushed.
The preparation date display of the servo program
10000005 ∗∗∗∗∗∗∗∗
(Servo ver.)
The "playback" key of the remote controller is pushed.
It is returned to the test mode initial image plane.
Model name Model number
DVL70S 00000702
DV-L70BL00000702
DV-L70W00000703
Region No.Region cord
400000008
300000004
200000002
Micro-code is the thing of the process
program of the system integrated circuit.
<The "2" key of the remote controller is pushed.>
Color bar display
20000001 00000000
Color bar display
20000002 00000000
Color bar display
20000003 00000000
Color bar display
20000003 00000000
To (1)
There is no copy guard signal.
As for the symptom when it was
dubbed in the video tape recorder?
The "playback" key of the remote controller is pushed.
AGC only
As for the symptom when it was
dubbed in the video tape recorder?
The "playback" key of the remote controller is pushed.
AGC+Color stripe1
As for the symptom when it was
dubbed in the video tape recorder?
The "playback" key of the remote controller is pushed.
AGC+Color stripe2
As for the symptom when it was
dubbed in the video tape recorder?
13
DV-L70S
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DV-L70W
Mecah test mode display
30000000 00000000
DDT mode
0D000100 00000000
DDT step 1
DD000201 ∗∗++--00
DDT step 2
DD000202 ∗∗++0000
DDT step 3
DD000203 ∗∗++0000
DDT step 4
DD000204 ∗∗000000
From (1)
<The "3" key of the remote controller is pushed.>
Mecah test mode display
3000E000 EEEEEEEE
<The "1" key of the remote controller is pushed.>
Laser test mode display
0D000100 00000000
The "playback" key of the remote controller is pushed.
DVD mode (Light is sent out by DVD laser,
and a pickup is moved to the circumference.)
DD000100 00000000
The "playback" key of the remote controller is pushed.
CD mode (Light is sent out by CD laser,
and a pickup is moved to the circumference.)
CD000100 00000000
The "playback" key of the remote controller is pushed.
Laser off mode (Light isn't sent out by laser,
and a pickup is moved to the circumference.)
FD000100 00000000
The "playback" key of the remote controller is pushed.
<Disk is put, and the "2" key of the remote controller is pushed.>
*It is usually returned in power source off for the state.
DDT mode
0D00E201 000000EE
The "playback" key of the remote controller is pushed.
It is executed to focus on of DDT.
Focus offset value(∗∗)
Track offset value(++)
The "playback" key of the remote controller is pushed.
The "playback" key of the remote controller is pushed.
The "playback" key of the remote controller is pushed.
0 layer focus balance value(--)
A track, slead on are done after RF gain outline adjustment and track balance adjustment are done.
0 layer RF gain value(∗∗)
Track balance value(++)
0 layer focus balance value
Just focus adjustment is done.
RF gain adjustment is done again after the completion.
0 layer focus balance value(∗∗)
Track RF gain value(++)
Focus gain adjustment is done.
0 layer focus gain value(∗∗)
When a disk is not in.
When it failed in servo initialization.
It is returned to the test mode initial image plane
by pushing "the playback" of the remote
controller and a "stop" key at the same time.
A playback key and a stop key are pushed at
the same time, and it is returned to the test mode
initial image plane.
The emission of the laser can be confirmed when
a disk cover is opened and a cap switch is
pushed with the thin bar and so on.
Note:Not to face the light of the laser squarely,
caution!
Slead motor is rotated, and it moves a pickup to
the circumference.
It is returned to the cause in power source off.
How to distinguish a difference in the DVD laser
and the CD laser.
DVD laser is lighter in comparison with the CD laser.
Note:Not to face the light of the laser squarely,
caution!
The "playback" key of the remote controller is pushed.
DDT step 5
DD000205 ∗∗000000
The "playback" key of the remote controller is pushed.
Track gain adjustment is done.
Track gain value(∗∗)
A two-layer disk does just focus of layer 1 and focus gain adjustment.
A CD does reading of TOC.
1 layer focus gain value(∗∗)
1 layer focus balance value(++)
14
From (2)
The "playback" key of the remote controller is pushed.
Servo version display
F1000001 99071400
The "playback" key of the remote controller is pushed.
Focus offset value display
F1000002 ∗∗∗∗∗∗∗∗
The "playback" key of the remote controller is pushed.
Track offset value display
F1000003 ∗∗∗∗∗∗∗∗
The "playback" key of the remote controller is pushed.
0 layer focus balance value display
F1000004 ∗∗∗∗∗∗∗∗
The "playback" key of the remote controller is pushed.
1 layer focus balance value display
F1000005 ∗∗∗∗∗∗∗∗
The "playback" key of the remote controller is pushed.
Track balance value display
F1000006 ∗∗∗∗∗∗∗∗
The "playback" key of the remote controller is pushed.
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0 layer focus gain value display
F1000007 ∗∗∗∗∗∗∗∗
The "playback" key of the remote controller is pushed.
1 layer focus gain value display
F1000008 ∗∗∗∗∗∗∗∗
The "playback" key of the remote controller is pushed.
Track gaine value display
F1000009 ∗∗∗∗∗∗∗∗
The "playback" key of the remote controller is pushed.
RF swing value display
F100000A ∗∗∗∗∗∗∗∗
The "playback" key of the remote controller is pushed.
RF gain value display
F100000B ∗∗∗∗∗∗∗∗
The "playback" key of the remote controller is pushed.
The inside switch ID value display
F100000C ∗∗∗∗∗∗∗∗
The "playback" key of the remote controller is pushed.
15
DV-L70S
Flow Chart NO.2
Flow Chart NO.3
NO
3.2V and 4.95V are not output to the pins 2 - 3
and pins 6 - 8 of connector CN9002, respectively.
YES
The power is not turned on.
Check the DC jack and fuse F9001.
NO
Is almost the same voltage as the input voltage being
applied to the source pins 1 - 3 of FET-TrQ9006?
YES
Check the IC9001 and FET-TrQ9004.
NO
Is the pulse being applied to the gate pin 4 of
FET-TrQ9006? Or, is the voltage 1.5V or less?
Check the FET-TrQ9003, D9003 and L9003.
YES
Check the switch SW9001.
NO
Is the voltage of gate pin 4 of FET-TrQ9006 1.5V
or less?
YES
Check the FET-TrQ9006.
NO
Is almost the same voltage as the input voltage
being output to the drain pins 5 - 8 of Q9006?
YES
Are the connector CN9002 and FFC wire normal?
NO
Is the "H" voltage being applied to the pin 1 of
connector CN9002?
YES
YES
Check the IC9001 and FET-TrQ9002.
NO
Is the pulse being applied to the gate pin 4 of
FET-TrQ9001? Or, is the voltage 1.5V or less?
NO
Check the IC3200 and IC3205 on the main PWB.
(Power-H line.)
Check the IC9001, Q9005, D9004 and D9005.
4.95V is not being output.
Check the fuse F9002.
NO
Is almost the same voltage as the input voltage being
applied to the source pins 1 - 3 of FET-TrQ9001?
YES
3.2V is not being output.
Is the control voltage normally into the pins 95
and 96 of IC504? (95pin-key1, 96pin-key2)
Replace key switch.
Is key switch contact and installation state?
YES
YES
Check the peripheral circuit or replace IC504.
YES
Check the FET-TrQ9001, D9002 and L9002.
Key manipulation on the DVD function side doesn't function.
FLOW CHART NO.1
FLOW CHART NO.2
FLOW CHART NO.3
FLOW CHART NO.4
NO
The key matrix circuit of IC3200 is checked.
30~27pins(S0~S3), 26, 25,20pins(K0~K3), D3102,
D3103~3108
Replace key switch.
Is key switch contact and installation state?
YES
YES
Check the main PWB unit of IC3200 and IC3205.
Key manipulation on the LCD function side doesn't function.
FLOW CHART NO.5
When S1001 is pressed, are the pins 1 and 2
short-circuited?
NO
NO
YES
Is the tray lid open?
Replace the S1001.
Check the M_4.8V line.
The disc does not rotate.
FLOW CHART NO.7
NO
NO
NO
NO
Is 4.8V voltage supplied to the pin 2 terminal of
remote control receiver?
Replace the remote control receiver or replace the
remote control transmitter is necessary.
Operation is possible from the DVD, but no
operation is possible from the infrared remote
control.
YES
Is the "L" pulse sent out pin 3 terminal of receiver
when the infrared remote control is activated?
YES
Check 5V line. (IC3205)
Replace the remote control receiver.
YES
Is pulse signal supplied to the pin 32 of IC504
and the pin 40 of IC3200?
Check the line between the remote control receiver
and the pin 32 of IC504 and the pin 40 of IC3200.
YES
Check IC504, IC3200, IC3205 and their periphery.
NO
NO
NO
Does the pickup move in the direction of inner
periphery?
YES
After moving in the direction of inner periphery,
does the pickup move in the direction of outer
periphery?
YES
Check the connection between pins 2 or 4 of S1001
and pins 27 of IC504.
Check the cable connecting to the CN302.
(Check the CN302 and line of pins 2 and 3 of IC702.)
YES
Is 4.8V being applied to the pins 16 and 17 of
IC701?
Check the cable connecting to the CN702.
(Check the line of pins 1 and 2 of CN702.)
YES
Check IC701 their periphery.
No operation is possible from the infrared remote control.
FLOW CHART NO.6
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8. TR OUBLESHOO TING
16
DV-L70S
YES
NO
YES
In case of DVD:Is the input signal supplied to the
In case of CD: Is the input signal supplied to the pins
(49, 55), (50, 54), (52, 53), 46 and 47 of IC303?
NO
Is the FE signal output to the pin 21 of IC303?
Check the connection of optical pickup cable.
If it is normal, replace the optical pickup cable.
Refer to "The disc is not recognized. (When the
focus servo does not function)".
NO
When the playback button is pressed while both
tray switch(S1001) and LD switch(S502) are held
down with a disc loaded, the disc rotates but stops
immediately.
YES
The disc is not recognized.
(In case of focus error)
FLOW CHART NO.8
NO
NO
The disc is not recognized.
(When the focus servo does not function)
FLOW CHART NO.9
NO
NO
NO
YES
Is the focus control signal being output to the pin
43 of IC707?
Check the line between pin 21 of IC303 and pin
38 of IC707.
Is the FE signal being input to the pin 38 of IC707?
(Check item for the symptom)
YES
Check the connection of optical pickup cable.
If it is normal, replace the pickup.
YES
YES
Check the power supply peripheral circuit.
If it is normal, replace the IC707.
NO
Is the focus control drive voltage being applied to
the pins 4 and 2 of CN301?
Check the line between IC707 and IC702.
Is the voltage of 4.8V being applied to the pins 5
and 20 of IC702?
NO
Check the M_4.8V line.
Replace the IC702.
Check the line between IC702 and connector CN301.
Is the focus control voltage being output from the
pins 24 and 25 of IC702?
Is the focus control voltage being input to the pin
17 of IC702?
YES
NO
Is the drive signal (SEL) of Q301 (LD POWER
ON) being output from the pin 52 of IC707?
Is the drive signal (LDO1) of Q307 (LD POWER
CTL) being output to the pin 45 of IC303?
When S502 is pressed, is the base of Q309 0.8V?
NO
NO
NO
Is the voltage of 3.4V being applied to the emitter
of Q308?
NO
Is the drive signal (LDO2) of Q308 (LD POWER
CTL) being output to the pin 4 of IC303?
When S502 is pressed, is the base of Q309 0.8V?
YES
The CD disc is not recognized.
(When the laser beam does not go on)
FLOW CHART NO.11
The DVD disc is not recognized.
(When the laser beam does not go on)
FLOW CHART NO.10
NO
NO
Is the voltage of 3.1V being applied to the emitter
of Q301? And, is the voltage of 3.4V being applied
to the emitter of Q307?
YES
Is the voltage of 3.1V and 2.3V being applied to
the pins 14 and 23 of CN301, respectively?
Check the line between the pin 4 of IC303 and
base of Q308.
Check the line between S502 and R397.
YES
Check the D_3.1V line and A_4.8V line. (Q309)
Check the A_4.8V line. (Q309)
YES
Check the connection of optical pickup cable.
If it is normal, replace the pickup.
Check the Q301 and line between Q307 and
CN301.
NO
Is the voltage of 2.3V being applied to the pin 9
of CN301?
YES
Check the line between Q308 and CN301.
Check the connection of optical pickup cable.
If it is normal, replace the pickup
YES
Check the line from the pin 52 of IC707, through
Q304, to the base of Q301.
Check the line between the pin 45 of IC303 and
base of Q307.
Check the line between S502 and R397.
NO
YES
NO
NO
Is it possible to hold normally the disc with the
check?
Set the disc on the disc tray.
YES
Replace the main pwb unit.
YES
YES
Check the loading switch (S502).
Replace the optical pickup unit.
It is laundered by the disk cleaner.
Is the level of RF signal which is output from the
pin 28 of IC303, normal?
Check for contamination of objective lens of optical
pickup.
YES
Does a signal come out in the following, each
output terminal of the integrated circuit?
Picture signal
IC201 4pin Y-SIG.
IC201 7pin C-SIG.
Sound signal
IC801 16pin AUDIO(L-CH)-SIG.
IC801 13pin AUDIO(R-CH)-SIG.
Both picture and sound do not operate normally.
FLOW CHART NO.12
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NO
Does a signal come out in the following, each
output terminal of the integrated circuit?
Picture signal
IC2102 12pin Y-SIG.
IC2102 8pin C-SIG.
IC2102 10pin CVBS-SIG.
NO
NO
Are the video signals inputted to the pins of LCD
DECODER IC1801.
IC1801 3pin Y-SIG.
IC1801 5pin C-SIG.
NO
NO
A disk is set on the tray, and played back.
It confirms that there is no problem by flowchart
NO.12.
YES
A video signal doesn't come out in the outside
projected image output terminal (J6002).
FLOW CHART NO.13
Check the peripheral circuit of IC1801.
YES
Doesn't the voltage adjustment of the line come off
+7.5V? If it deviates, it is readjusted with R1102.
Check the peripheral circuit of IC2102, Q1805,
Q2102, D2301, D2303.
NO
Check the line between the pin 4 of IC201 and
pin 3 of IC1801. (Q203~204, IC2101, Q1801,
Q1807, Q1808)
Check the line between the pin 7 of IC201 and
pin 5 of IC1801. (Q201~202)
NO
Do 19 of IC1801, 21, 24 pin (VR, VG, VB) output
appear?
YES
LCD panel peripheral circuit and the existence of
the failure place of the appearance are confirmed.
YES
A LCD panel power circuit and rogic circuit are
examined. (IC1000, Q1100, T1100, etc.)
Is a power source being supplied to the LCD panel
normally?
VGH(+13V), VSS(-16V), VCC(-10.9V), VSH(4.8V),
VGL(-10V)
YES
NO
COMMON AMP., CURRENT DET. circuit are
examined. (Q1102~1103, IC1103, etc.)
YES
COMMON Doesn't AMP. adjustment come off?
If it deviates, it is readjusted based on the GPOS
adjustment.
Is the COM2 bias level of the LCD panel normal?
YES
NO
Check the peripheral circuit of IC1101.
Is TFT LCD CONTROL PROCESSOR (IC1101)
normal?
YES
The outside output terminal (J6002) peripheral is
checked from pins 12 and 8 of IC2102.
The VIDEO DRIVER circuit composed of Q2201,
Q2206 is examined.
Picture do not operate normally.
FLOW CHART NO.14
Does 7 pin of IC1801 gain the control voltage
(about 3.1V) of TINT?
YES
YES
NO
Is the outside horizontal synchronizing of 34 pin of
IC1801 normal?
NO
NO
Is (the 14,16 pin of IC1801) doing oscillation
(4.43MHz) with VCO of the chroma circuit
normally?
YES
NO
NO
NO
NO
Is the voltage of pins 5, 6, 7, and 8 of TP1191
normal?
Is the backlight going on?
YES
YES
Is each voltage of CN1105 normal?
Is the oscillation of inverter normal?
NO
Check the pin 49 of IC3200 and pin 9 of IC3201.
Replace the inverter unit.
Check the periphery of IC1000, Q1100 and T1100.
Is TFT LCD CONTROL PROCESSOR (IC1101)
normal?
YES
LCD panel peripheral circuit and the existence of
the failure place of the appearance are confirmed.
Check the periphery of IC1101.
NO
Check the periphery circuit 7 pin of IC1801.
NO
The readjustment of white balance is done.
Check the peripheral circuit 6 pins of IC1801.
Replace the backlight.
Is white balance normal?
YES
NO
Check the chroma periphery circuit of IC1801.
Are 19 of IC1801, 21, 24 pin (VR, VG, VB) output
normal?
YES
Check the LCD panel unit.
YES
NO
Check the chroma periphery circuit of IC1801.
Are 19 of IC1801, 21, 24 pin (VR, VG, VB) output
normal?NOCheck the LCD panel unit.
NO
Check the periphery circuit of X1801 and pins 14,
16 of IC1801.
Does 6 pin of IC1801 gain the control voltage
(about 3.0V) of COLOUR?
YES
No picture
FLOW CHART NO.15
Colour of the picture image is abnormal.
FLOW CHART NO.16
A colour doesn't have it about the picture image.
FLOW CHART NO.17
Check the pins 38, 44, 43 of IC1101 and L1109,
D1105, IC1102, Q1101, etc.
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NO
Is a signal being inputted to the following, each
output terminal of the integrated circuit?
IC6000 3pin AUDIO(L-CH)-SIG.
IC6000 5pin AUDIO(R-CH)-SIG.
Set the disc on the disc tray.
It confirms that there is no problem by flowchart
NO.12.
YES
The control signal line of IN_H is checked.
NO
Check the line between the pins 16, 13 of IC801
and pins 3, 5 of IC6000.
YES
YES
The control peripheral circuit of IN_H is examined
in each of 9 of IC6203 and IC6202, the 10 pin.
YES
The control signal line of SMUT is checked.
NO
Is a signal being inputted to the following, each
output terminal of the integrated circuit?
IC6203 2, 5pin AUDIO(L-CH)-SIG.
IC6202 5pin AUDIO(R-CH)-SIG.
YES
Check the line between the pins 1, 7 of IC6000 and
pins 2, 5 of IC6203 and IC6202.
NO
Does a signal come out in the following, each
output terminal of the integrated circuit?
IC6203 2, 5pin AUDIO(L-CH)-SIG.
IC6202 4pin AUDIO(R-CH)-SIG.
YES
Is the control signal of IN_H added to each of 9 of
IC6203 and IC6202, the 10 pin?
NO
Is a signal being inputted to the following, each
output terminal of the integrated circuit?
IC6203 12pin AUDIO(L-CH)-SIG.
IC6202 12pin AUDIO(R-CH)-SIG.
YES
The line of the space to 12 pin of IC6203, IC6202 is
checked through sound volume (R6010) from 4 pin
of IC6203, IC6202.
NO
Is a signal being inputted to the following, each
output terminal of the integrated circuit?
IC6002 2pin AUDIO(L-CH)-SIG.
IC6002 6pin AUDIO(R-CH)-SIG.
The actuation of the audio mute circuit of Q2004,
Q2005, Q6615, Q6616 is checked.
YES
Sound do not operate normally.
FLOW CHART NO.19
YES
YES
YES
NO
NO
NO
Is the PDP signal of 38 pin of IC1101 normal?
Is the synchronizing signal of 7 pin of IC1101
normal?
YES
YES
Is a synchronizing signal being inputted to 36 pin of
IC1801?
Is a synchronizing signal being outputted to 3 pin
of IC1900?
NO
Check the betweenthe emmiter and pin 36 of IC1801.
Check the pins 38, 44, 43 of IC1101 and pins
L1109, D1105, IC1102, Q1101, etc.
Check the peripheral circuit pins 71, 70 of IC1101,
C1122 and R1103 (image plane center position).
Is the horizontal position of the picture image
normal?
YES
The readjustment of R1103 (SCREEN. CENTER
POS.) is done.
SYNC SEPA. (IC1900), Q1900 and MONO MULTI
(IC1901), IC1902, IC1801 are checked.
The synchronism of the picture image can't be taken.
FLOW CHART NO.18
Replace the IC1900.
Check the LCD panel unit.
The headphone audio output is not emitted.
FLOW CHART NO.21
Check or replace IC6002 (AUDIO POWER OUT)
and IC6601 (POWER REG.)
The control signal line of SMUT is checked.
The control signal line of IN_H is checked.
NO
YES
The control peripheral circuit of IN_H is examined
in each of 9 of IC6203 and IC6202, the 10 pin.
Is the control signal of IN_H added to each of 9 of
IC6203 and IC6202, the 10 pin?
NO
YES
YES
Check or replace speaker.
YES
Check the outside output terminal (J6000).
YES
Check the headphone output terminal (J6001).
YES
Does a signal come out in the following, each
output terminal of the integrated circuit?
IC6002 16, 13pin AUDIO(L-CH)-SIG.
IC6002 12, 9pin AUDIO(R-CH)-SIG.
NO
NO
Does a signal come out in the following, each
output terminal of the integrated circuit?
IC6203 3, 15pin AUDIO(L-CH)-SIG.
IC6202 3, 15pin AUDIO(R-CH)-SIG.
Check the periphery circuit of IC6602.
NO
Does a signal come out in the following, each
output terminal of the integrated circuit?
IC6602 1pin AUDIO(L-CH)-SIG.
IC6602 7pin AUDIO(R-CH)-SIG.
The outside output audio doesn't come out.
(Speaker audio comes out.)
FLOW CHART NO.20
The actuation of the audio mute circuit of Q2004,
Q2005, Q6615, Q6616 is checked.
The control signal line of SMUT is checked.
NO
The actuation of the audio mute circuit of Q2004,
Q2005, Q6012, Q6013 is checked.
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9. IC FUNCTION LIST
9-1. IC201 MC44722A DIGITAL VIDEO ENCORDER
Pin No.Terminal nameI/OOperation function
1CVBS/CbOAnalog composite video signal output or Cb signal output current drive (positive)
2CVBS/CbOAnalog composite video signal output or Cb signal output current drive (negative)
3CVBS/Cb VddPower Supply for CVBS / Cb DAC circuit
4YOAnalog luminance signal output current drive (positive)
5YOAnalog luminance signal output current drive (negative)
6YVddPower Supply for Y DAC circuit
7C/CrOAnalog chrominance signal output or Cr signal output current drive (positive)
8C/CrOAnalog chrominance signal output or Cr signal output current drive (negative)
9CVddPower Supply for C/Cr DAC circuit
10DA VssGround for DAC circuit
11IbiasOReference current for the 3 DACs
12DA VddPower Supply for DAC circuit
13VReffReference full scale voltage for the 3 DACs
14ChipAI2C chip address select {0 : 42(hex)/43(hex) 1 : 1C(hex)/1D(hex)}
15TESTITEST pin (Ground)
16SOz(O)If SPI mode, serial data output / If I2C mode, connect to ground
17SDA/SII/O(I)Serial data input, Open drain output / If SPI mode, serial data input
18SCL/SCKISerial clock
19SEL(I)Connect to Ground / If SPI mode, this pin is chip select
20DVssGround for Digital circuit
21CLOCKI27MHz clock input
22DVddPower Supply for Digital circuit
23ResetIReset signal, active LOW
24PAL/NTSCINTSC/PAL select. This pin active only Reset time.(NTSC : Low PAL : High)
25-32DVIN7-0I8-bit Multiplexd Y/Cr/Cb 4:2:2 data (ITU Rec656) input (1) or Multiplexd Y data
(ITU-Rec656/601) input in 16-bit input mode (DVIN7 : MSB)
33TVINITEST data input
34EXTI/OCsync/Frame sync output or external VBI information input
35F/VsyncI/OFrame sync or Vertical sync input/output
36HsyncI/OHorizontal sync input/output
37TP9I/OMUX switch in 8-bit X 2 Multiplexed Y/Cr/Cb 4:2:2 data (ITU-Rec656) input mode,
or Test data input/output
38-41TP8-5I/O8-bit Multiplexed 4:2:2 data (ITU-Rec656/601) input (2), or Multiplexed Cr/Cb data
(ITU-Rec656/601) input in 16-bit input mode (MSB : TP8), or Test data input/output
42DVssGround for Digital circuit
43DVddPower Supply for Digital circuit
44-47TP4-1I/O8-bit Multiplexed 4:2:2 data (ITU-Rec656/601) input (2), or Multiplexed Cr/Cb data
(ITU-Rec656/601) input in 16-bit input mode (LSB : TP1), or Test data input/output
48TP0I/OFor test (should be ground)
9DPAC–DPD AC combination capacity 1–
10DPBD– DPD AC combination capacity 2–
11DPD1–DPD integral capacity 1–
12DPD2–DPD integral capacity 2–
13SCBIControl line (Bit clock)2.2[V]
14SCLIControl line (Latch signal)2.2[V]
15SCDIControl line (Sirial Data)2.2[V]
16VRCKIReference clock input2.3[V]When frequency is increased, the
17VCKF–
18VccP–Power terminal–
19LVLO Ser vo addition outputVrd x (1/2)
20TEOOTE outputVrD
21FEOOFE outputVrD
22DFTNIDPD difect–Low DPD output: Mute
23VccS–Power terminal (servo)–
24RPZO RF ripple center voltageVrD
25RPOO RF ripple outputVrD
26RPBORF ripple bottom–
27RPPORF ripple peak–
28RFOO Equalizing RF output2.3[V]
29NC–NC terminal–To be connected to GND
30NC–NC terminal–To be connected to GND
31VccR–Power terminal (RF)–
32DPDBIPit depth adjustmentVrDWhen D PDB is raised, the A/B
33TEBITE balanceVrDWhen TEB is raised, the TP side
34FEBIFE balanceVrDWhen FEB is raised, the A+C (FP)
35PSCIVRCK frequency division ON/OFF–High: Frequency division OFF
36Vcc2–Power terminal–
37NC–NC terminalVrDTo be connected to VrD, or to GND
38EQDIGroup delay correctionVrDWhen EQD is raised, the group
39GND2–GND terminal.–
40RFDC–DC feedback capacity–
41RFAO RF total addition output2.2[V]
42EQBIBoost adjustmentVrD
43EQFIFrequency adjustmentVrDWhen EQF is raised, shift to the
44MDI1IMonitor input–
45LDO1O Drive output–
46P1TNITE–input (DVD)VrA
47P1TPITE+input (DVD)VrA
48NC–NC terminal–To be connected to GND
49P1FNIFE–input (DVD)VrA
50P1FPIFE+input (DVD)VrA
51LDP1IAPC polarity 1–Positive polarity when this terminal
52P1DIID input (DVD)
Capacity for time constant adjustment
Terminal DC Voltage(TYP.)
–
Remarks
filters excepting the servo LPF are
shifted to high frequency side.
side delay increases.
gain increases and the A+C side
delay increases.
side gain increases.
through C
delay increases at the right side.
When EQB is raised, the boost increases.
high frequency side occurs.
is connected to Vcc.
21
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Pin No. Terminal nameI/OOperation function
53P1CIIC input (DVD)VrA
54P1BIIB input (DVD)VrA
55P1AIIA input (DVD)VrA
56GNDR–GND terminal (RF)–
57LDP2IAPC polarity 2–Positive polarity when this terminal
resistor built in.
2DVDD3–Digital power. (3.3V)For logic cell
3SVCK1ISer vo reference clock input. (Oscillation circuit input terminal)3.3V-I/F Feedback
4SVCK0OServo reference clock output. (Oscillation circuit input terminal)resistor built in.
5DVSS–Digital power. (0V)For logic cell
6DVDD2–Digital power. (3.3V)For logic cell
7N.C.–User use prohibited.Open
8HDWRIMPU write signal.TTL level
9HDRDIMPU read signal.TTL level
10ECCCSIMPU chip selection.TTL level
11D8I/OMPU data bus.TTL level
12D9I/OMPU data bus.TTL level
13D10I/OMPU data bus.TTL level
14D11I/OMPU data bus.TTL level
15D12I/OMPU data bus.TTL level
16D13I/OMPU data bus.TTL level
17D14I/OMPU data bus.TTL level
18D15I/OMPU data bus.TTL level
19DVSS–Digital power. (0V)For I/O cell
20DVDD5–Digital power. (5V)For I/O cell
21HINTOMPU interruption signal. (Occurrence of interruption = “L”)OPEN DRAIN
22HA0IMPU address bus.TTL level
23HA1IMPU address bus.TTL level
24PLCKI/ORead channel clock input/output terminal.
25ED0–User use is prohibited (N.C.) since it is for shipping adjustment.Open
26ED1–
27ED2–
28ED3–
29ED4–
30ED5–
31ED6–
32ED7–
33TESTIFor shipping adjustment.Set to “L”
34PDONOPLL phase error signal output. (Negative polarity)
35PDOPOPLL phase error signal output. (Positive polarity)
36RLLDORLL detection result output.
37LPFNIPLL loop filter amp. reverse input.
38LPFOOPLL loop filter amp. output.
39VCOFOVCO filter terminal.
40SLCOOBuilt-in comparator reference voltage output terminal.
41AVSS–Analog power. (0V)
42AVRONon-PLL system analog reference potential. (1.65V)
43VRC–Resistance division point potential. (For analog reference
potential generation: 1.65)
44PVROPLL system analog reference potential. (1.65V)
45AVDD–Analog power. (3.3V)
46RVR2–2nd reference voltage. (For capacitor connection)
47RVDD–Exclusive-use power terminal. (3.3V)
48RFINIRF signal input.
49RVSS–Exclusive-use power terminal. (0V)
50RVR1–1nd reference voltage. (For capacitor connection)
51DVRIDMO reference potential. (1.65V recommended)
52DMOODisc equalizer output for DVD. (Triple value PWM + HiZ)
53RASNOExternal RAM row address selection. (Negative logic)
54CASNOExternal RAM row address selection. (Negative logic)
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Pin No.Terminal nameI/OOperation functionRemar ks
55MOENOExternal RAM output permission signal.
56MWENOExternal RAM read/write selection.
57DVSS–Digital power. (0V)For logic cell
58DVDD3–Digital power. (3.3V)For logic cell
59MA9OExternal RAM address bus.
60MA8OExternal RAM address bus.
61MA7OExternal RAM address bus.
62MA6OExternal RAM address bus.
63MA5OExternal RAM address bus.
64MA4OExternal RAM address bus.
65MA3OExternal RAM address bus.
66MA2OExternal RAM address bus.
67MA1OExternal RAM address bus.
68MA0OExternal RAM address bus.
69DVSS–Digital power. (0V)For I/O cell
70DVDD5–Digital power. (5V)For I/O cell
71MD7I/OExter nal RAM data bus.TTL level
72MD6I/OExter nal RAM data bus.TTL level
73MD5I/OExter nal RAM data bus.TTL level
74MD4I/OExter nal RAM data bus.TTL level
75MD3I/OExter nal RAM data bus.TTL level
76MD2I/OExter nal RAM data bus.TTL level
77MD1I/OExter nal RAM data bus.TTL level
78MD0I/OExter nal RAM data bus.TTL level
79SD7OMPEG data output.
80SD6OMPEG data output.
81SD5OMPEG data output.
82SD4OMPEG data output.
83DVSS–Digital power. (0V)For logic cell
84DVDD3–Digital power. (3.3V)For logic cell
85SD3OMPEG data output.
86SD2OMPEG data output.
87SD1OMPEG data output.
88SD0OMPEG data output.
89SERROMPEG data reliability flag. (Data error: “L”)
90SOSOOMPEG output sector sync signal. (Sector top: “L”)
91SVALOMPEG data effective flag. (Effective state: “L”)
92SDCKOMPEG data transfer clock.
93DVSS–Digital power. (0V)For logic cell
94SREQIMPEG data request flag. (Request state: “L”)TTL level
95RSTNIHard reset input. (Reset state: “L”)
96DVDD3–Digital power. (3.3V)For logic cell
97STDAOOperation state monitor data.Common with PWM.
(Output synchronizing with SDCK fall)
98STCKOOperation state monitor sync signal. (Data top bit: “L”)Common with PWM.
99UPWMOGeneral-use PWM output.4mA, 5V-I/F
100DVSS–Digital power. (0V)For logic cell
24
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9-5. IC501 IX1697GEFLASH
Pin No.SymbolTypeName and function
Byte selection address: When the device is in the x8 mode, the low or high order
45DQ
25, 24~18,
8~4are latched during data wiring operation.
3~15,
48, 17during data writing, erasing and lock block operation.
15/A-1
A0-A
A13-A
12
17
29, 31, 33,Low order byte data input/output: Command user interface writing cycle data and
35, 38, 40,DQ
-DQ7Input/Outputcommandinput. Various data read memory identifier and status data output Chip
0
42, 44nonselection or output disable: Float state
30, 32, 34, 36,
39, 41, 43, 45data input/output. Operative only in x16 mode. x8 mode: Float state DQ15/A-1 is address.
DQ8-DQ15Input/Output
26CE#Input
12RP#Input
28OE#Input
11WE#Inputis controlled. In “Low” state WE# becomes active. At rise edge the address and data
15RY/BY#Output
47BYTE#Input
13VppWrite/erase power supply: 5.0 ± 0.5V is applied during writing/erasing.
37VccDevice power supply: 5.0 ± 0.5V
27, 46GNDGround
9, 10, 14, 16NCNonconnection
• Block Diagram
Inputbyte is selected. It is not used in the x16 mode.
(If BYTE# is high, DQ15/A-1 input circuit does not operate.)
Input
Input
Word selection address: Selection of one word of 16k byte block. These addresses
Block selection address: Selection of 1/32 erase block. These addresses are latched
High order byte data input/output: The function is the same as that of low order byte
Chip enable: Device control logic, input buffer, decoder and sense amp. are activated.
Chip becomes active only when CE# is “Low”.
Reset/Pow er down: If RP# is set to “Low”, the control circuit is initialized when power is turned
on. Hence , the RP#pin is set to “Low”. When power is turned on or off or in case of fluctuation
it is kept at “Low” so as to protect data from noise .
When RP# is in “Low” state, the de vice is in deep po wer do wn state. 480 ns is required to
recover from the deep power do wn state. If the RP# pin becomes “Low”, the whole chip
operation is interrupted and reset. After reco very the device is set to arr a y read state.
Output enable: When OE# is set to “Low”, data is output from the DQ pin. When
OE# is set to “High”, the DQ pin is set to float state.
Write enable: Command user interface, data Q register and address Q latch access
are fetched.
Ready/busy: The state of internal write state machine is output. In “Low” state it is
indicated that the write state machine is in operation. If the write state machine w aits for
next operation instruction, erase is suspended or it is in deep power do wn state , the RY/
BY# pin is in float state.
Byte enable: When BYTE# is set to “Low”, the device is set to the x8 mode . At this
time the DQ
-DQ15 pin becomes float state. Address A-1 selects high order/low order
8
byte. When BYTE# is “High”, the device is set to the x16 mode. The A
disabled.