Sharp DV-760X User manual

1
SX9Q5DV-760X/
SERVICE MANUAL
In the interests of user-safety (Required by safety regula-
tions in some countries) the set should be restored to its
originalconditionandonlypartsidenticaltothosespecified
be used.
SHARP CORPORATION
Page
1. IMPORTANT SAFEGUARDS AND PRECAUTIONS ......................................................................1-1
2. FEATURES/3. SPECIFICATIONS ..................................................................................................2-1
4. PART NAMES ................................................................................................................................. 4-1
5. MAINTENANCE CHECK ITEMS AND EXECUTION TIME............................................................ 5-1
6. DISASSEMBLY AND REPLACEMENT OF MAIN PARTS............................................................. 6-1
7. EXPLANATION OF MECHANISM ..................................................................................................7-1
8. OPERATION OF PICKUP...............................................................................................................8-1
9. TEST MODE ................................................................................................................................... 9-1
10. TROUBLESHOOTING ..................................................................................................................10-1
11. IC FUNCTION LIST....................................................................................................................... 11-1
12. SEMICONDUCTOR LEAD IDENTIFICATION ..............................................................................12-1
13. WIRING DIAGRAM ....................................................................................................................... 13-1
14. BLOCK DIAGRAMS ......................................................................................................................14-1
15. SCHEMATIC DIAGRAMS .............................................................................................................15-1
16. PRINTED WIRING BOARD ASSEMBLIES...................................................................................16-1
17. REPLACEMENT PARTS LIST......................................................................................................17-1
18. PACKING OF THE SET ................................................................................................................18-1
CONTENTS
MODEL
DV-760X
DV-760X
DVD VIDEO PLAYER
SERVICE MANUAL DVD VIDEO PLAYER MODEL DV-760X

DV-760X
1. IMPORTANT SAFEGUARDS AND PRECAUTIONS
1-1

DV-760X
2. FEATURES
2-1
• Plays DVD, video CD and CD (Digital Audio) discs
• Built-in Dolby Digital decoder supporting Dolby Pro Logic*1 decoding and Virtual Surround
• For the audio on a DVD disc recorded in MPEG Audio Version 2.0 multi channel (5.1ch)
• New Digital Gamma correction and New Digital Super Picture functions
• Separate colour component output connectors (Y, PB(CB) and PR(CR))
• DTS*2 AUDIO DECODER (DIGITAL THEATRE SYSTEM)
*1Manufactured under license from Dolby Laboratories. "Dolby", "Pro Logic" and the double-D symbol are trademarks of
Dolby Laboratories.
*2 "DTS" and "DTS Digital Surround" are trademarks of Digital Theater Systems, Inc.
3. SPECIFICATIONS
Signal System: NTSC/PAL
Video output: Output connector: Pin-jack
Output level: 1 Vp-p (75Ω)
S video output: Y output level: 1 Vp-p (75Ω)
C output level: 0.30 Vp-p (75Ω)
Output connector: S connector
Component colour output: Y output level: 1 Vp-p (75Ω)
PB(CB) output level: 0.525 Vp-p (75Ω)/75% colour
PR(CR) output level: 0.525 Vp-p (75Ω)/75% colour
Output connector: Pin-jack
Audio output: 5.1ch output: Front L/R, surround L/R, centre and subwoofer
5ch output: Front L/R, surround L/R and center
Output connector: Pin-jack
Output level: 2 Vrms (1 kHz, 0 dB)
Digital audio I/F: Optical digital output: Optical connector
Audio output: Coaxial digital output: Pin-jack
Headphone output: Output connector: Standard jack
Video signal horizontal resolution: 500 lines (DVD)
S/N ratio: 60 dB (DVD)
Audio signal frequency characteristics: For DVD linear PCM playback:
4 Hz to 22 kHz (48 kHz sampling)
4 Hz to 44 kHz (96 kHz sampling)
CD playback: 4Hz to 20 kHz (EIAJ)
(MPEG Audio 1/2)
S/N ratio: CD: 105 dB, 1 kHz (EIAJ)
Dynamic range: DVD linear PCM: 94 dB (EIAJ)
CD: 94 dB (EIAJ)
Total harmonic distortion ratio: CD: 0.005% or less (EIAJ)
Operating temperature: 5°C to 40°C
Storage temperature: –20°C to 55°C
Power supply : 220 V to 240 V AC, 50/60 Hz
Power consumption: 16 W
Dimensions: 430 mm × 351 mm × 97 mm (W × D× H) (Including attachments)
Weight: 3.8 kg
Specifications are subject to change without notice.
Weight and dimensions are approximate.
Digital Output
·Thedigitaloutputformat(opticalorcoaxial)usedinthisDVDplayerislinearPCMaudiosamplingat44.1kHz 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: Video/audio cord x 1, UM3 battery x 2,
Remote Control Unit x 1, S-Video cord x 1

DV-760X
For details on the use of each control.
4. PART NAMES
4-1

DV-760X
5. MAINTENANCE CHECK ITEMS AND EXECUTIONTIME
Parts Maintained 1,000 hrs. 2,000 hrs.
Pickup
Spindle Unit
Sled Motor
Loading Motor
Belt
Note : Part Replacement
: Cleaning
(For cleaning, use a lint-free cloth danpened with pure isopropyl alcohol.)
Use the following table as a guide to maintain the mechanical parts in good operating condition.
CARES WHEN USING THE PICKUP
1. The laser light having wavelength 650 nm is emitted from the objective lens. BE CAREFUL SO THAT THE LASER
LIGHT DOES NOT ENTER DIRECTLY INTO YOUR EYE.
2.Thesemiconductorlasermaybeeasilydamagedbyelectrostaticcharges.Whenhandlingthepickup,takecaresothat
the electrostatic charge is not generated.
3. The semiconductor laser may be easily damaged by overcurrent. Use the power supply unit which does not give any
spike current when the power is turned on and off.
4. Carefully remove the dust and dirt from the objective lens with the lens blower.
When handling the objective lens, take due care so that it is not contaminated with fingerprint, etc. If the objective lens
is contaminated, impregnate the cleaning paper with a small quantity of solvent (isopropyl alcohol), and gently wipe to
clean.
5. The ozone layer depleting components (ODC) are not used in the production process for the product.
MECHANICAL PARTS REGUIRING PERIODICAL INSPECTION
5-1

DV-760X
6. DISASSEMBLY AND REPLACEMENT OF MAIN PARTS
6-1. DISASSEMBLY
1.Remove five screws (A), and remove the cabinet.
Note: When assembling it, tighten the screws in
order of 1 - 2 .
(Because the set may rise a little by tightening
the screws.)
6-1
17.Remove five screws (T) which install the volume
PWB of the front panel.
18.Remove six screws (U) which install the display
PWB.
19.Remove six screws (V) which install the operate
PWB.
*The spacer and insulation seat under the indication
tube of (W) are bonded with both-side sticking tape.
7.Disconnect the lead lines (F) and (G) and (H) from
the main PWB under the mechanism.
8.Remove three screws (J) on both sides of the termi-
nal angle frame.
9.Remove three screws (K) which install the terminal/
power PWB.
10.Removethreescrews(L)whichinstalltheterminal
block.
11.Remove three screws (M) of the display PWB.
12.Remove four screws (N) of the mecha angle.
13.Remove one screw (P) of the mecha angle.
14.Remove two screws (Q) of the decorative leg.
15.Push out the middle pin (R) of the setting leg in the
direction opposite to insertion. (Two places)
16.Remove two screws (S) which install the main
PWB under the mechanical unit.
2.Remove two screws (B).
3.Remove three screw (C).
4.Releasethehooksofthefrontpanelattwoplaceson
both sides and at three places on the bottom, and
slide the front panel toward you.
5.Disconnect the connector (D).
6.Removefourscrews (E)whichinstallsthemechani-
cal unit.
Top Cabinet
(A) x2 1(A) 2
(A) x2 1
(D)
(E) x4
(B) x2
(C) x1
Front Panel
(C) x1
(C) x1 Remove it when you remove
a front panel because screw
catch is done with terminal
in the substrate (headphone)
and the angle from the panel.
(L) x3
(K)
(J) x3
(N) x4
(P) (R) x2
(K)
Terminal PWB
(Q) x2
(M) x3
(S)
(S)
(F)
(G)(H)
Mechanism
Main PWB
Volume PWB
(W)
Operate PWB
Display PWB
(V) x6
(T) x5
(U) x6

DV-760X
6-2. REPLACEMENT OF MAIN PARTS
<Disassembling and assembling procedure>
· Removing the tray (emergency ejection)
Removing the tray lock (set state)
VIDEO
Tray Decoration Panel
Insertathinplateintothehatchingpart,slowlymovetheitinthearrowdirectionsothatthetrayismovedoutalittleinthearrowdirection.
Note: In this state the tray cannot be removed completely.
· Drive Unit State
VIDEO
Tray Decoration Panel
Slowly move in the arrow direction, using the screwdriver having a fine head.
<Disassembling and assembling the mechanism chassis>
1. Remove the pickup FPC and loading relay FFC A from the main PWB.
Note: Fit the conductive rubber cap to the front end of pickup FPC (short-circuit).
2. Remove the solder joint of loading relay PWB at drive unit rear side.
1 Sled motor lead wire (Yellow·Orange)
2 IN SW lead wire 2 (White)
3 Spindle motor lead wire (Red·Black)
4 Loading motor lead wire (Red·Black)
5 Remove each lead wire from the claw.
1
1
2
3
4
3
2
4A
B
C
SLmotor 1 SLmotor 2 SW GND SP1 SP2
L motor2
L motor2
Black
Red
Red
Black
White White
Orange
Yellow
Remove the lead wire.
Remove the lead wire.
3. Remove the relay PWB mounting screw B (M2.6S + 6S S tight), and remove the relay PWB C .
Relay PWB
Rear side of moving chassis assembly
Conductive rubber cap
(Earth sponge)
4. Disassembling the mechanism chassis moving chassis assembly
(1) Remove the four M2.6 screws A , and remove the clamped top plate B .
P tight screw
with M2.6 washer
AA
B
(2) Remove the M2.6 screw C .
(3) Holding aslant upward the mechanism chassis moving chassis assembly D in the arrow direction, remove.
Note: The slide rack E must be moved to the left side as shown in diagram.
Take care so that the lead wires, especially the earth sponge G at the pickup FPC F front end, must not beremoved.
Slide rack
Mechanism chassis moving
chassis assembly
P tight screw with
M2.6 washer
G
C
F
E
D
Clamper top
plate rear side
6-2

DV-760X
8. Replacing the Sled Motor
(1) At the rear side of chassis remove the two M1.7 screws A , and remove the motor angle B .
(2) Remove the thrust holding screw C (for easier removing wipe off the thread lock).
(3) Remove the two motor fitting screws M1.4 D , and replace the motor E . Motor is replaced in the state while the worm F is
kept press-fitted to the output shaft.
Note: When installing the motor, take care so that the worm does not damage the ANG B hole.
(4) Screw in the thrust holding screw C , adjust the worm front end clearance to 0 to 0.1 mm, and apply screw lock.
5. Disassembling the loading drive system
(1) Remove the two M2 screws A . (4) Remove relay gear 2 E .
(2) Remove the tray pinion B . (5) Remove the two M1.7 screws F .
(3) Remove the relay gear 1 C together with the (6) Remove the L motor G (with pulley) downward.
timing belt S D .
M2
M1.7
L·Motor Pulley
L·Motor
Timing belt S
Relay
gear1 Relay
gear2
Tray pinion
A
B
E
C
D
G
F
6. Disassembling the mechanism chassis from the moving chassis
(1) Remove the insulator B (2 pcs. at the right side in diagram) parallel in the arrow direction.
(At this time it is better to insert the fine head of screw driver at the ID side of insulator and to move in the arrow direction, which
facilitates removal.)
(2) Remove the mechanism chassis in the arrow direction, pulling upward aslant.
At this time take care so that the insulator C (left side, 2 pcs.) is not damaged. (Do not put at once the mechanism chassis
assembly.)
Insulator
Insulator
Insulator
Insulator
Mechanism chassis
C
B
B
C
7. Replacing the pickup and the spindle motor
Since the pickup optical axis and turntable inclination of DVD are adjusted with higher accuracy than of CD/MD, make a replacement
as a mechanism service chassis ass'y (refer to Parts List).
Thrust holding screw
Apply screw-lock.
M1.4 screw
M1.7 screw
Motor Angle BA
D
Worm F
Sled motor E
C
Mecha chassis Ass'y
6-3

DV-760X
7. EXPLANATION OF MECHANISM
(1)Tray loading mechanism
When the tray loading motor rotates counterclockwise, motion is transmitted to the slide rack D through the intermediate
gear 1 A , intermediate gear 2 B and tray pinion C , resulting in insignificant motion in the arrow direction.
The slide rack is linked with the operating chassis. It lowers the pickup mechanism.
The protrusion of slide rack E is linked with the tray through the groove at the rear side of tray, so that the tray is
pushedaheadalittle.When thetrayispushedout,theslide rack isdisconnectedfromthetraypinion,and at thesame
time the gear at the rear side of tray is connected with the tray pinion, and the tray is pushed ahead.
Whenthetrayispushedoutfully,thesliderackmovesfurtherinthearrowdirectionthroughthe grooveattherear side
of tray. The tray position detection switch F is turned on, and the tray loading motor stops.
When the tray closes the operation is as follows. If the tray OPEN/CLOSE button or tray is pressed and the detection
switch is turned off, the tray loading motor rotates clockwise, so that the tray is retracted. When the detection switch
is turned on again, the tray loading motor stops.
Intermediate gear 2
Intermediate gear 1
Tray pinion
Pawl linked with the groove at the
rear side of tray
This groove is linked with the pawl of
pickup mechanism.
Tray position detection switch
Slide rack
F
D
E
B
C
A
Sled motor
Pickup
Sled pinion
Rack
Pickup
Position detection
switch Spindle motor
E
C
B
A
D
(2)Pickup feed mechanism
When the sled motor A rotates, the rack C moves through the sled pinion B so that the pickup D is moved to the
internal or external periphery.
Whenitismovedtotheinnermostperiphery,thepositiondetectionswitch E ispushedbytherack,sothattheposition
of pickup is initialized.
(3)Disc rotation mechanism
The spindle motor is used to rotate.
IC701 is used to control.
When the spindle motor is replaced, replace the
spindle unit.
7-1

DV-760X
8-3. POLARITIES OF SIGNAL
8. OPERATION OF PICKUP
8-1. CIRCUIT CONFIGURATION OF PICKUP
The pickup unit reads signals from the disk, and the flexible cable is connected to the board. The following signals flow through the
cable.
8-2. EQUIVALENT CIRCUIT OF PICKUP
FO+
TR–
TR+
FO–
ACTUATOR
OSC VOS
LD
PD
VA
VB
VC
VD
Sga
Vraf
Vcc
GND
–
+
–
+
–
+
–
+
HOLOGRAM LASER UNIT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20 1
TR–
FO+
TR+
FO–
VR
PD
VCC
GND
LD
GND
VOS
NC
NC
Vref(VCC/2)
VA
VC
Sga
GND
VB
VD
(NC)
Power adjust
HIGH-FREQUENCY CONVOLUTION
Focus When electric current is flowed
FO+, FO- from FO+ to FO-, the lens comes
to near the disk.
Tracking When electric current is flowed
TR+, TR- from TR+ to TR-, the lens goes
toward the outer circumference.
Gain switching DVD one Layer High gain
Sga DVD two Layer Sga : +5V
CD
8-4. SIGNALS OF PICKUP
8-4-1. Tracking drive signal (TR+, TR-)
The signal drives the tracking servo mechanism which projects the beam on the track by moving the objective lens (OL) to the outer
or inner circumference (at a right angle against the track) of the disk.
2-focus objective lens
Actuator assembly
Monitor Diode
Basic Structure of Laser Diode
Laser Diode
LD PD
8-1
8-4-2. Focus drive signal (FO+, FO-)
The signal drives the focus servo mechanism which aligns the focus on the pit of the disk
by elevating OL (vertically against the disk surface.)
The VR terminal is connected to GND.
8-4-3. Monitor Diode (PD)
Since the laser diode largely varies output of the laser light even if the flowing current is slightly varied, the projection
light is detected with the monitor diode to control the laser light to be equally output.
Since the current varies on the monitor diode according to the intensity of the received light of the laser diode, the drive current of
thelaserdiodeisreducedifthecurrentofthemonitordiodeincreases.Onthecontrary,thedrivecurrentofthelaserdiodeisincreased
if the current of the monitor diode decreases.
As the projection light of the laser diode becomes stronger, the current of the monitor diode increases to increase the current which
flows into the monitor diode output (PD). This is input to the pin 44 of IC303 and is compared with the reference voltage to control
the drive current of the laser diode.
The circuit is called ALPC (Automatic Laser Power Control).
8-4-4. Laser diode drive current control (LD)
Power supply to drive the laser diode
8-4-5. High-frequency convolution module power supply (VOSC)
The high-frequency convolution imposes the high-frequency signal on the DC current to impose the high frequency on the drive
current of the laser. Thus, the interference of outgoing light and reflected light is prevented.
8-4-6. HF Signal (VA, VB, VC, VD)
Signals recorded in the disk When the quantity of laser light increases, the current shown in
figure increases and the PD terminal voltage rises.
IC303 is used to control. The LD terminal voltage lowers, and
the quantity of light reduces. (IC303 is actuated by voltage
input.)

DV-760X
9-1
9.TEST MODE
Test Mode A power source is put, and a playback key and a stop key are pushed after the "NO DISC" display at the same
time. (It keeps pushing it for about three seconds.)
ROM Renewal Mode A power source is put with pushing a playback key and a halt key at the same time.
(It keeps pushing it for about three seconds.)
[TEST MODE]
The preparation date display of the program
10000000 ∗∗∗∗∗∗∗∗
(Last updata)
Model number display
10000001 00007604
(Model number)
The version display of the program
10000002 ∗∗∗∗∗∗∗∗
(Program ver.)
Reagion number display
10000003 00000008
(Region code:Binary display)
Color bar display
20000001 00000000 (FIP)
Micro-code number display
10000004 ∗∗∗∗∗∗∗∗
(Microcode ver.)
The preparation date display of the servo program
10000005 ∗∗∗∗∗∗∗∗
(Servo ver.)
It is returned to the test mode initial image plane.
It is returned to the test mode initial image plane.
<The "2" key of the remote controller is pushed.>
<The "1" key of the remote controller is pushed.>
Test mode initial image plane
F0000000 00000000
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.
The "reactivation" 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.
The "playback" key of the remote controller is pushed.
There is no copy guard signal.
As for the symptom when it was
dubbed in the video tape recorder?
Color bar display
20000002 00000000 (FIP)
The "playback" key of the remote controller is pushed.
AGC only
As for the symptom when it was
dubbed in the video tape recorder?
Color bar display
20000003 00000000 (FIP)
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?
AGC+Color stripe2
As for the symptom when it was
dubbed in the video tape recorder?
Color bar display
20000003 00000000 (FIP)
To (1)
The all FIPs burning
40000000 00000000 (OSD only)
<The "4" key of the remote controller is pushed.>
The "4" key of the remote controller is pushed.
Model name Model number
DV-750 00007503
DV-750TK 00007503
Model name Reagion cord
DV-750 00000004
DV-750TK 00000004
Micro-code is the thing of the process
program of the system integrated circuit.

DV-760X
9-2
Mecah test mode display
3000E000 EEEEEEEE
<Disk is put, and the "2" key of the remote controller is pushed.>
*It is usually returned in power source off for the state.
<The "3" key of the remote controller is pushed.>
<The "OPEN/CLOSE" key of the remote controller is pushed.>
The "OPEN/CLOSE" key of the remote controller is pushed.
Or, a tray is pushed by hand.
<The "1" key of the remote controller is pushed.>
When it failed in servo initialization.
It is returned to the test mode initial image plane
by pushing "the playback" of the body and a
"stop" key at the same time.
Laser test mode display
0D000100 00000000
The "playback" key of the remote controller is pushed.
A playback key and a stop key are pushed at
the same time, and it is returned to the test mode
initial image plane.
Light is sent out by DVD laser, and a spindle
motor rotates, and a pickup is moved to the
circumference.
DD000100 00000000
The "1" key of the remote controller is pushed.
Note:Not to face the light of the laser squarely,
caution!
The "playback" key of the remote controller is pushed.
The "playback" key of the remote controller is pushed.
From (1)
To (2)
Mecah test mode display
30000000 00000000
Tray eject failure
3000E001 EEEEEEEE
When it failed in tray eject
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.
Tray eject success
30000001 00000000
Tray load failure
3000E002 EEEEEEEE
When it failed in tray load
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.
Tray load display
30000002 00000000
DDT mode
0D000100 00000000
DDT step 1
DD000201 ∗∗++--00
DDT mode
0D00E201 000000EE When a disk is not in.
It is executed to focus on of DDT.
Focus offset value(∗∗)
Track offset value(++)
0 layer focus balance value(--)
The "playback" key of the remote controller is pushed.
DDT step 2
DD000202 ∗∗++0000
After track balance adjustment is done, a track, slead on are done.
Track offsete value(∗∗)
Track balance value(++)
The "playback" key of the remote controller is pushed.
DDT step 3
DD000203 ∗∗++--00
A two-layer disk does RF gain adjustment, and a CD does track balance readjustment.
Just focus adjustment is done after the completion.
0 layer focus balance value(∗∗)
Track balance value(++)
0 layer RF gain value(--)
The "playback" key of the remote controller is pushed.
DDT step 4
DD000204 ∗∗000000
Focus gain adjustment is done.
0 layer focus gain value(∗∗)
The "playback" key of the remote controller is pushed.
DDT step 5
DD000205 ∗∗++0000
Track gain adjustment is done. RF gain readjustment is done after the completion.
Track gain value(∗∗)
0 layer RF gain value(++)
DDT step 6
DD000206 ∗∗++0000 (DVD)
DD000206 ∗∗++--000 (CD)
A two-layer disk does just focus of layer 1 and focus gain adjustment.
A CD does reading of TOC.
DVD mode
1 layer focus gain value(∗∗)
1 layer focus balance value(++)
CD mode
0 layer focus gain value(∗∗)
0 layer focus balance value(++)
The corrected front 0 layer focus balance value(--)

DV-760X
9-3
The "playback" key of the remote controller is pushed.
The "playback" key of the remote controller is pushed.
From (2)
Servo version display
F1000001 ∗∗∗∗∗∗∗∗
Focus offset value display
F1000002 ∗∗00∗∗00
The "playback" key of the remote controller is pushed.
Track offset value display
F1000003 ∗∗00∗∗00
The "playback" key of the remote controller is pushed.
0 layer focus balance value display
F1000004 ∗∗00∗∗00
The "playback" key of the remote controller is pushed.
1 layer focus balance value display
F1000005 ∗∗00∗∗00
The "playback" key of the remote controller is pushed.
Track balance value display
F1000006 ∗∗00∗∗00
The "playback" key of the remote controller is pushed.
0 layer focus gain value display
F1000007 ∗∗00∗∗00
The "playback" key of the remote controller is pushed.
1 layer focus gain value display
F1000008 ∗∗00∗∗00
The "playback" key of the remote controller is pushed.
Track gaine value display
F1000009 ∗∗00∗∗00
The "playback" key of the remote controller is pushed.
RF swing value display
F100000A ∗∗00∗∗00
The "playback" key of the remote controller is pushed.
RF gain value display
F100000B ∗∗00∗∗00
The "playback" key of the remote controller is pushed.
The "playback" key of the remote controller is pushed.
The inside switch ID value display
F100000C ∗∗∗∗∗∗∗∗
[ROM RENEWAL MODE]
1. A DVD itself and a personal computer are articulated as the right figure. Software for the renewal is started more.
2. A power source is put with pushing a DVD's own playback key and a halt key at the same time. (It keeps pushing it for about three
seconds.)
3. When "a lateral" is inputted in accordance with the personal computer display and data transfer indication is shown and renewal
process is started normally when an ENTER key is pushed.
4. When renewal is completed normally.
R : OK It is displayed.
W : STR It is displayed.
W : END It is displayed.
Personal computer
(DOS)
DVD itself
DIGITAL It is articulated to the
OUT terminal connection child.
Fixture for the ROM renewal

DV-760X
10-1
10.TROUBLESHOOTING
FLOW CHART NO.1 The power cannot be turned on.(1) Is the fuse normal?
See FLOW CHART No.3 <The fuse blows out.>
No
No
Is normal state restored when once unplugged power cord is plugged again after several seconds?
Replace the fuse.
Yes Yes
No
Is the AT 5V line voltage normal?
Check for leak or short-circuiting of primary circuit component? (Q9008,Q9010,D9016,T9001,D9012-3,C9021- 2,etc)
Yes
Is the voltage of AT 12V, AT -30V and filament normal? No Check each rectifying circuit of secondary circuit.
FLOW CHART NO.2
FLOW CHART NO.3 The fuse blows out. Is there leaking or short-circuited primary component?
No
The power cannot be turned on.(2) Does the change from STANDBY LED indicate turn-off?
No
Is the supply voltage of 5V fed to pins(15) and (16) of IC8201? Check the AT 5V line.
Yes No
Yes
No
Is the supply voltage about 5V fed to pin(3) of IC8201? Check the IC8202.
Yes No
Is there 4.0MHz oscillation at pins(1) and (2) of IC8201? Check the FL8201 and IC8201.
Yes No
Does the "L" signal inputted at pin(14) of IC8201, when the POWER button activated on the DVD. Check the S8151 and POWER KEY line.
Yes
The STANDBY LED indicate it flashing after the 0.5sec.
No
Does the remote control "L" signal inputted at pin(4) of IC8201, when the POWER button activated on the remote control unit?
Check the line between the remote control receiver and the pin(4) of IC8201.
Yes
Yes (below, confirmed operating at LED turn-off of 0.5sec interval.)
Check for short-circuiting of rectifying diode and circuit in each rectifying circuit of secondary side.
Replace IC8201.
Yes
Replace IC8201.
No
Are the "P–CON(L)" pulse outputted from the pin(7) of IC8201? Replace IC8201.
Yes No
Does the P–CON switch circuit is operate normally?
Check each component and if poor the replace.
Yes No
Are the "H" pulse inputted into the pin(9) of IC8201?
Check or replace D9035-9.
FLOW CHART NO.6
The fluorescent display tube does not light.
No
Is the supply voltage of 5V fed to pin(18) of IC5001? Check the AT 5V line.
Yes No
Is the supply voltage of -30V fed to pin(16) of IC5001? Check the AT -30V line and Q9025.
Yes No
Is there 4.0 MHz oscillation at pins(19) and (20) of IC5001? Check FL5001, IC5001 and their periphery.
Yes No
Check the signal lines of FIP DA, FIP CK, FIP CS of IC5001 and IC504. Check or replace IC5001 and IC504.
FLOW CHART NO.7 The key operation is disabled.
No
Is key switch contact and installation state? Replace key switch.
Yes
Is the control voltage normally into the pins(95) and (96) of IC504?
No Check the power circuit,D5001 and Q9026. No Check that the fluorescent display tube is free from
damages such as crack.
Yes
Are the filament voltage applied between (1) and (62) of the fluorescent display tube? Also negative voltage applied between these pins and GND. Yes
Check the fluorescent display tube and its periphery.
FLOW CHART NO.4 When the output voltage fluctuates.
No
Does the secondary side photocoupler circuit operate normally? Check the circuit and replace the parts.
(D9020, D9041, D9046, Q9028, etc.)
Yes No
Does the primary side photocoupler circuit operate normally? Check the circuit and replace the parts.
(D9020, D9023, D9040, etc.)
FLOW CHART NO.5 When buzz is heard from the vicinity of power circuit. Check for short-circuiting of rectifying diode and circuit in each rectifying circuit of secondary side. (D9005-8,D9025,IC9001-3,Q9020-27,etc.)
Yes
Replace D9020.
KEY-1/2 INPUT
5.0V 4.3V 3.8V 3.1V 2.4V 1.9V 1.3V 0.6V
0V
OFF
S8106
STOP
S8105 S8154 S8104
S8103
S8101
S8153
STILL/PAUSE GAMMA
SKIP(+)
SKIP(-)
S.PICTURE
PLAY
KEY–1 KEY–2

DV-760X
10-2
FLOW CHART NO.9 PC 9V is not output. Is 12V voltage supplied at pin(3) of IC9001? No Check the secondary circuit, AT 12V and PC 12V
line.
Yes No
Is there output at pin(1) of IC9001? Check the IC9001 periphery circuit.
Yes
Check for load circuit short-circuiting or leak.
FLOW CHART NO.10 PC 3.3V is not output. Is 5V voltage supplied at pin(1) of IC9003? No
Check the secondary circuit, AT 5V and PC 3.3V line.
Yes
Is there output at pin(2) of IC9003? No Check the IC9003 periphery circuit.
Yes
Check for load circuit short-circuiting or leak.
FLOW CHART NO.8
No operation is possible from the infrared remote control.
No
Operation is possible from the DVD, but no operation is possible from the infrared remote control.
Replace the remote control receiver or replace the remote control transmitter is necessary.
Yes
Is 5V voltage supplied to the pin(3) terminal of remote control receiver? No Check AT 5V line.
Yes
Is the "L" pulse sent out pin(1) terminal of receiver when the infrared remote control is activated?
Yes
Replace IC504.
No Replace the remote control receiver.
Yes
Is pulse signal supplied to the pin(32) of IC504? No Check the line between the remote control receiver
and the pin(32) of IC504.
FLOW CHART NO.11 The disc tray cannot be opened and closed.(For remote control is possible.)
No
Are the "L" pulse inputted into the pin(13) of IC8201 when the KEY button is pressed? Check the S8102 and OPEN/CLOSE KEY line.
Yes No
Are the "L" pulse outputted from the pin(10) of IC8201? Replace IC8201.
Yes No
Are the "L" pulse inputted into the pin(11) of IC8201? Check the TRAY ACK(L) line.
Yes
See FLOW CHART NO.12<The disc tray cannot be opened and closed.>
FLOW CHART NO.12 The disc tray cannot be opened and closed.
No
Is the signal from the pins(70) and (69) of IC504 input into the pins(6) and (7) of iC702? Check the LD-REV/FWD signal line between the
IC702 and the IC504.
Yes
No
Is loading motor drive voltage output from the pins(10) and (11) of IC702? Is 8V voltage applied to the pin(21) of IC702?
Yes No
Is the loading motor drive voltage applied to the pins(3) and (2) of AG connector?
Check the line between the IC702 and the AG connector.
Yes
Yes
Check for mechanism and gear engagement and breakage.
Replace IC702. Check AT 8V line. No
No No No
Is FE signal inputted at pin(38) of IC707? (Checking of symptom.)
Check the line between the pin(21) of IC303 and pin(38) of IC707.
Yes
Yes
Is the focus control signal output to the pin(43) of IC707? Check the IC707 power source periphery circuit.
If it is normal, replace IC707.
Is the focus control signal from the pin(43) of IC504 input into the pin(19) of IC702? Check the focus control signal (FOO) line between the
IC702 and the IC504.
Yes
No
Check the line between the IC702 and the AB connector.
No
Is the focus control drive voltage output from the pins(17) and (18) of IC702?
Yes
Is the focus control drive voltage applied to the pins(4) and (2) of AB connector?
Yes
Check the connection of optical pickup cable. If it is normal, replace the optical pickup.
No No
No No
The disc is ejected. (In case of focus error) Does the objective lens of optical pickup move up and down after the disc is removed? (Checking of symptom).
See FLOW CHART NO.14<The disc is ejected. (In case focus servo does not function.)>
Yes Yes Yes
Is FE signal output to the pin(21) of IC303 when the disc is set?
Is there input signal on the pins (49, 54), (50, 55), (46, 52), and (47, 53) of IC303? Is there output signal on the pins(18),(17),(16) and (15) of IC301?
Check the connection of optical pickup cable. If it is normal, replace the optical pickup.
FLOW CHART NO.13 FLOW CHART NO.14
The disc is ejected. (In case of focus servo does not function.)
Is 8V voltage applied to the pin(21) of IC702?
Yes
Replace IC702.
Check AT 8V line. No

DV-760X
10-3
Yes
Check the connection of optical pickup cable. If it is normal, replace the optical pickup.
No No
Is the Q301 (LD POWER ON) drive signal (SEL) output to the pin(52) of IC707? Is the Q307 (LD POWER CTL) drive signal (LDO1) output to the pin(45) of IC303? (Checking of symptom.) Is 3.3V voltage applied to the emitter of Q301 and, 5V voltage applied to the emitter of Q307?
Yes Yes
Are the 3.3V and 2.3V voltage supplied to the pins(11) and (9) of AB connector, respectively?
Check the D_3.3V (1) line and the A_5V line.
No
FLOW CHART NO.15
The disc is ejected. (When the laser beam does not light.)
Check the line between the pin(52) of IC707 and the base of Q301 through Q304. Ceck the line between the pin(45) of IC303 and the base of Q307.
No
Check the line between the Q301, Q307 and AB connector.
Yes
Replace the main PWB unit.
No No
Set the disc on the disc tray.
Is it possible to hold normally the disc with the check?
Yes Yes
Is the level of RF signal which is output from the pin(28) of IC303, normal?
Yes
Check the video amplifier unit and the audio amplifier unit. (IC2004-4, IC801-3)
Check for contamination of objective lens of optical pickup.
FLOW CHART NO.16
Both picture and sound do not operate normally.
Check the loading switch.
No Replace the optical pickup unit.
No
No
Are the video signals outputted to the pins of main unit connector CN801 and CN803? CN803 5Pin CVBS CN803 7Pin Y CN803 9Pin C CN801 25Pin Cb CN801 27Pin Cr CN801 29Pin Y
Check the line between the pins of main unit connector CN801 and the pins of IC2007. CN803 5Pin →IC2007 5Pin CVBS CN803 9Pin →IC2007 2Pin C CN803 7Pin →IC2007 12Pin Y
No
FLOW CHART NO.17
Picture do not operate normally.
Check the main unit. (Make sure that the IC201, Q208-13 peripheral circuit. Check the main unit. (IC201, Q202-7 peripheral circuit.)
No Check the peripheral circuit of Cb/V DRIVE circuit
IC2003 from the pin(4) of IC2007.
No No
No No No
Set the disc on the disc tray.
Yes
Are the video signals shown above input into the pins of IC2007? IC2007 5Pin CVBS IC2007 2Pin C IC2007 12Pin Y
Yes
Are the video signals outputted to the specific output terminal?
Are the composite video signals outputted to the VIDEO OUT terminal (J2001)?
Are the luminance signals outputted to the S–OUT terminal (J2002)?
Are the chroma signals outputted to the S–OUT terminal (J2002)? Are the Cb signals outputted to the Cb OUT terminal (J2001)? Are the Y signals outputted to the Y–OUT terminal (J2001)? Are the Cr signals outputted to the Cr OUT terminal (J2001)?
Check the peripheral circuit of S–YC DRIVE circuit IC2002 from the pin(14) of IC2007. Check the peripheral circuit of S–YC DRIVE circuit IC2002 from the pin(15) of IC2007. Check the peripheral circuit of Cb/V DRIVE circuit IC2003 from the pin(25) of CN801. Check the peripheral circuit of Cr/Y DRIVE circuit IC2004 from the pin(29) of CN801. Check the peripheral circuit of Cr/Y DRIVE circuit IC2004 from the pin(27) of CN801.
No
Yes
Are the video signal outputted to each pins of IC2007? IC2007 4Pin CVBS IC2007 15Pin S–C IC2007 14Pin S–Y
Make sure that the level of pins(9), (10) and (11) of IC2007 is "L" level. Check or replace IC2007.
Check the V-MUTE line.
Yes
No
Yes
Check the main unit.(IC801-3)
Are the audio signals outputted to the pins of main unit connector CN801? CN801 1Pin FRONT-L CN801 3Pin FRONT-R CN801 5Pin REAR-L
Yes
Are the audio signals output to the specific outputted terminals?
No
Are the audio signals outputted to the FRONT–L/R OUT terminal (J2001)? Are the audio signals outputted to the REAR–L/R OUT terminal (J2001)? Are the audio signals outputted to the CENTER/ SUB WOOFER OUT terminal (J2001)?
No Check the peripheral circuit of AUDIO AMP. circuit
IC6001 from the pins(1) and (3) of CN801. Check the peripheral circuit of AUDIO AMP. circuit IC6002 from the pins(5) and (6) of CN801. Check the peripheral circuit of AUDIO AMP. circuit IC6002 from the pins(7) and (8) of CN801.
No No
FLOW CHART NO.18
Sound do not operate normally.
Set the disc on the disc tray.
Yes
CN801 6Pin REAR-R CN801 7Pin CENTER CN801 8Pin SUB WOOFER

DV-760X
Pin No. Terminal name I/O Operation function
1 CVBS/Cb/B1 O Analog composite video signal output or Cb or B signal output current drive (positive)
2 CVBS/Cb/B1 O Analog composite video signal output or Cb or B signal output current drive (negative)
3 CVBS/Cb/B1 Vdd Power Supply for CVBS / Cb/B DAC1 circuit
4 Y/G 1 O Analog luminance or G signal output current drive (positive)
5 Y/G 1 O Analog luminance or G signal output current drive (negative)
6 Y/G 1Vdd Power Supply for Y/G DAC1 circuit
7 C/Cr/R 1 O Analog chrominance signal output or Cr or R signal output current drive (positive)
8 C/Cr/R 1 O Analog chrominance signal output or Cr or R signal output current drive (negative)
9 C/Cr/R 1Vdd Power Supply for C/Cr/R DAC1 circuit
10 DA Vss Ground for DAC circuit
11 Ibias 1 O Reference current for the 1st set of 3 DACs
12 VRef 1 Reference full scale voltage for the 1st set of 3 DACs
13 DA Vdd Power Supply for DACs
14 VRef 2 Reference full scale voltage for the 2nd set of 3 DACs
15 Ibias 2 O Reference current for 2nd set of the 3 DACs
16 NC No connect to pin
17 CVBS/Cb/B2 O Analog composite video signal output or Cb or B signal output current drive (positive)
18 CVBS/Cb/B2 O Analog composite video signal output or Cb or B signal output current drive (negative)
19 CVBS/Cb/B2 Vdd Power Supply for CVBS / Cb/B DAC2 circuit
20 Y/G 2 O Analog luminance or G signal output current drive (positive)
21 Y/G 2 O Analog luminance or G signal output current drive (negative)
22 Y/G Vdd Power Supply for Y/G DAC2 circuit
23 C/Cr/R 2 O Analog chrominance signal output or Cr or R signal output current drive (positive)
24 C/Cr/R 2 O Analog chrominance signal output or Cr or R signal output current drive (negative)
25 C/Cr/R 2Vdd Power Supply for C/Cr/R DAC2 circuit
26 ChipA I2C chip address select {0 : 40(hex)/41(hex) 1 : 1D(hex)/1E(hex)}
27 TEST I TEST pin (Ground)
28 DVss Ground for Digital circuit
29 CLOCK I 27MHz clock input
30 DVdd Power Supply for Digital circuit
31 Reset I Reset signal, active LOW
32 PAL/NTSC I NTSC/PAL select. This pin is sampledonly at Reset.(NTSC : Low PAL : High)
33 SO z(O) In SPI mode, serial data output / In I2C mode, grounded.
34 SDA/SI I/O(I) Serial data input, Open drain output / If SPI mode, serial data input
35 SCL/SCK I Serial clock
36 SEL I/(I) Connect to Ground / If SPI mode, this pin is chip select
37 DVdd Power supply for Digital circuit
38 DVss Ground for Digital circuit
39-46 DVIA7-0 I/O 8-bit MultiplexdY/Cr/Cb 4:2:2 data (ITU Rec656/601) input (DVIA) or MultiplexdY data
(ITU-Rec656/601) input in 16-bit input mode
47 Vmute I Video mute on Reset (0: normal, 1: mute)
48 C/Fsync/VBI I/O Csync/Frame sync input/output
49 F/Vsync I/O Frame sync or Vertical sync input/output
50 Hsync I/O Horizontal sync input/output
51 A/B sel I Switch control for 8-bit x 2 Mutiplexed 4:2:2 data (ITU Rec656/601) input (DVIA) or (DVIB)
52-55 DVIB7-4 I/O 8-bit Multiplexed 4:2:2 data (ITU Rec656-601) input (DVIB), or Multiplexed Cr/Cb data
(ITU Rec656/601) input in 16-bit input mode
56 DVss Ground for Digital circuit
57 DVdd Power Supply for Digital circuit
58-61 DVIB3-0 I/O Multiplexed 4:2:2 data (ITU Rec656/601) input (DVIB), or Multiplexed Cr/Cb data
(ITU Rec656/601) input in 16-bit input mode
62 TP I/O Test data input/output (Grounded)
63,64 NC No connect to pin (Ground)
11. IC FUNCTION LIST
11-1. IC201 MC44724A DIGITAL VIDEO ENCODER
11-1

DV-760X
Pin No. Terminal name I/O Operation function
1 EIN I RF signal input. Input of RF signal output of optical pickup.
2 GND1 – Ground
3 S/DUAL I Single layer/dual layer selection signal input.
4 AIN I RF signal input. Input of RF signal output of optical pickup.
5 BIN I RF signal input. Input of RF signal output of optical pickup.
6 CIN I RF signal input. Input of RF signal output of optical pickup.
7 DIN I RF signal input. Input of RF signal output of optical pickup.
8 VrefIN I Reference voltage input. (2.1V)
9 FIN I RF signal input. Input of RF signal output of optical pickup.
10 GAINsel1 I Amp gain selection input 1.
11 VCC1 – Power terminal. (5.0V)
12 GAINsel2 I Amp gain selection input 2.
13 FOUT O RF signal output. Input RF signal is current-voltage-converted and output.
14 EOUT O RF signal output. Input RF signal is current-voltage-converted and output.
15 DOUT O RF signal output. Input RF signal is current-voltage-converted and output.
16 COUT O RF signal output. Input RF signal is current-voltage-converted and output.
17 BOUT O RF signal output. Input RF signal is current-voltage-converted and output.
18 AOUT O RF signal output. Input RF signal is current-voltage-converted and output.
19 VCC2 – Power terminal. (5.0V)
20 RFPOUT O Data read signal output. The same phase as MIXIN.
21 RFNOUT O Data read signal output. Reverse phase with respect to MIXIN.
22 MIXIN I Data read signal input.
23 MIXOUT O Data read signal output.
24 GND2 – Ground
• Block Diagram
• Mode selection table
GAINsel1 (Terminal 10) GAINsel2 (Terminal 12) Amp gain
L L +6dB
H, OPEN L -2dB
L H, OPEN +2dB
H, OPEN H, OPEN -6dB
Amp. gain selection
Layer S/DSEL (Terminal 3) Amp gain
Single L, OPEN 0dB
Dual H +10dB
Single layer/dual layer selection
11-2. IC301 IX1461GE RF PRE AMP.
H, V
Y
demux
Cb
Cr Modulator
subcarrier
gen
off_set
0
0
0
CGMS,
WSS gen CC_gen
Sync_generator BG
copy
protection bus
bus
TESTI2C/SPI
BIAS DAC DAC
DAC
30 37, 57
28
51
38, 56
39~46
52~55, 58~61
DVdd
DVss
DVIA [7:0]
DVIB [7:0]
A/B_sel
62
TP
29
Clock
26
Chip A
31
Reset
32
33
PAL/NTSC
SO
34
SDA/SI
35
SCL/SCK
36
SEL
27
TEST
10
DAVss
13
DAVdd
15 Ibias 2
14 Vref 2
24 C/Cr/R 2
23 C/Cr/R 2
18 CVBS/Cb/B 2
17 CVBS/Cb/B 2
21 Y/G 2
20 Y/G 2
11 Ibias 1
12 Vref 1
8C/Cr/R 1
7C/Cr/R 1
2CVBS/Cb/B 1
1CVBS/Cb/B 1
5Y/G 1
4Y/G 1
9C/Cr/R 1Vdd
3CVBS/Cb/B 1Vdd
6Y/G 1Vdd
25
C/Cr/R 2Vdd
19
CVBS/Cb/B 2Vdd
22
Y/G Vdd
50
Hsync
49
F/Vsync
48
C/Fsync/VBI
MC44724/5A
BIAS DAC DAC
Output Selector
DAC
0
0
0
0
0
0
0
RGB matrix
11-2

DV-760X
1 GND – GND terminal. –
2 P2TP I TE+input (CD) VrA
3 P2TN I TE–input (CD) VrA
4 LDO2 O Drive ouput –
5 MDI2 I Monitor input –
6 VrA O Analog VREF 2.1[V]
7 VrD O Digital VREF – Vdd 1/2
8 Vdd I Power terminal 4.2V (3.3V)
9 DPAC – DPD AC combination capacity 1 –
10 DPBD – DPD AC combination capacity 2 –
11 DPD1 – DPD integral capacity 1 –
12 DPD2 – DPD integral capacity 2 –
13 SCB I Control line (Bit clock) 2.2[V]
14 SCL I Control line (Latch signal) 2.2[V]
15 SCD I Control line (Sirial Data) 2.2[V]
16 VRCK I Reference clock input 2.3[V] When frequency is increased, the
filters excepting the servo LPF are
shifted to high frequency side.
17 VCKF – Capacity for time constant adjustment –
18 VccP – Power terminal –
19 LVL O Servo addition output Vrd x (1/2)
20 TEO O TE output VrD
21 FEO O FE output VrD
22 DFTN I DPD difect – Low DPD output: Mute
23 VccS – Power terminal (servo) –
24 RPZ O RF ripple center voltage VrD
25 RPO O RF ripple output VrD
26 RPB O RF ripple bottom –
27 RPP O RF ripple peak –
28 RFO O Equalizing RF output 2.3[V]
29 NC – NC terminal – To be connected to GND
30 NC – NC terminal – To be connected to GND
31 VccR – Power terminal (RF) –
32 DPDB I Pit depth adjustment VrD When D PDB is raised, the A/B
side delay increases.
33 TEB I TE balance VrD When TEB is raised, the TP side
gain increases and the A+C side
delay increases.
34 FEB I FE balance VrD When FEB is raised, the A+C (FP)
side gain increases.
35 PSC I VRCK frequency division ON/OFF – High: Frequency division OFF
36 Vcc2 – Power terminal –
37 NC – NC terminal VrD To be connected to VrD, or to GND
through C
38 EQD I Group delay correction VrD When EQD is raised, the group
delay increases at the right side.
39 GND2 – GND terminal. –
40 RFDC – DC feedback capacity –
Pin No. Terminal name I/O Operation function Terminal DC Voltage(TYP.) Remarks
11-3. IC303 IX1517GE RF SIGNAL PROCESSOR
• Block Diagram
24 23 22 21 20 19 18 17 16 15 14 13
1 98765432 10 1211
MIX
EIN
CIN
BIN AIN
S/DUAL
GND1
FIN
VrefIN
DIN
DOUT FOUT
VCC1
GAINsel1
GAINsel2
RFPOUT VCC2 AOUT BOUT COUT EOUT RFNOUT GND2 MIXOUT MIXIN
11-3

DV-760X
41 RFA O RF total addition output 2.2[V]
42 EQB I Boost adjustment VrD When EQB is raised, the boost increases.
43 EQF I Frequency adjustment VrD When EQF is raised, shift to the
high frequency side occurs.
44 MDI1 I Monitor input –
45 LDO1 O Drive output –
46 P1TN I TE–input (DVD) VrA
47 P1TP I TE+input (DVD) VrA
48 NC – NC terminal – To be connected to GND
49 P1FN I FE–input (DVD) VrA
50 P1FP I FE+input (DVD) VrA
51 LDP1 I APC polarity 1 – Positive polarity when this terminal
is connected to Vcc.
52 P1DI I D input (DVD)
53 P1CI I C input (DVD) VrA
54 P1BI I B input (DVD) VrA
55 P1AI I A input (DVD) VrA
56 GNDR – GND terminal (RF) –
57 LDP2 I APC polarity 2 – Positive polarity when this terminal
is connected to Vcc.
58 P2AI I A input (CD) VrA
59 P2BI I B input (CD) VrA
60 P2CI I C input (CD) VrA
61 P2DI I D input (CD) VrA
62 GNDS – GND terminal (Servo) –
63 P2FP I FE+input (CD) VrA
64 P2FN I FE–input (CD) VrA
Pin No. Terminal name I/O Operation function Terminal DC Voltage(TYP.) Remarks
Terminal Terminal name Function
10~13,16~20,9 A0~A8,A9R Address input
8 RAS Row address strobe
23 CAS Column address strobe
2~5,24~27 DQ1~DQ8 Data input/Data output
22 OE Output enable
7 WE Light enable
1, 14 Vcc Power (5V)
15, 28 Vss Ground (0V)
6, 21 NC Not connected
11-4. IC401 IX1484GE 4M DRAM
P1FN
P1FP
LDP1
P1DI
P1CI
P1BI
P1AI
GNDR
LDP2
P2AI
P2BI
P2CI
P2DI
GNDS
P2FP
P2FN
DPDB
VccR
NC
NC
RFO
RPP
RPB
RPO
RPZ
VccS
DFTN
FEO
TEO
LVL
VccP
VCKF
NC P1TP P1TN LDO1 MDI1 EQF EQB RFA RFDC GND2 EQD NC Vcc2 PSC FEB TEB
GND P2TP P2TN LDO2 MDI2 VrA VrD Vdd DPAC DPBD DPD1 DPD2 SCB SCL SCD VRCK
12345678910111213141516
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
APC1
sel-RF
R-gain
Adjust EQ
F-gain
Adjust
F-gain
Adjust
RF Ripple
creation
FE creation
DPDTE
creation
FE-gain
Adjust
TE-gain
Adjust
Level detect
T-gain
Adjust
3BTE creation
APC2
B U S
Time
constant
adjustment
sel-PD
sel-PD
sel-PD
mode-TE
sel-FE
sel-IC
sel-TE
sel-DPD
sel-LVL
• Block Diagram
11-4