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LC-30HV4E
1st Edition



SERVICE MANUAL

LCD COLOUR TELEVISION




MODEL LC-30HV4E
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 should be used.




CONTENTS

Page Page
» IMPORTANT SERVICE SAFETY PRECAUTION ..... 2 » POWER SYSTEM BLOCK DIAGRAM
» SPECIFICATIONS................................................ 3 (AVC System) ..................................................... 70
» OPERATION MANUAL ........................................ 4 » PC I/F BLOCK DIAGRAM (AVC System) .......... 72
» DIMENSIONS .................................................... 10 » SIGNAL BLOCK DIAGRAM (Display) ................ 74
» REMOVING OF MAJOR PARTS ........................ 12 » POWER UNIT BLOCK DIAGRAM (Display) ...... 76
» ADJUSTMENT PROCEDURES (AVC System) .. 19 » OVERALL WIRING DIAGRAM (AVC System) ... 78
» UPGRADING INSTALLED PROGRAMS ........... 26 » OVERALL WIRING DIAGRAM (Display) ............ 82
» ADJUSTMENT PROCEDURES (Display) ......... 29 » DESCRIPTION OF SCHEMATIC DIAGRAM ..... 84
» MAJOR IC INFORMATIONS .............................. 33 » WAVEFORMS .................................................... 85
» TROUBLE SHOOTING TABLE .......................... 52 » SCHEMATIC DIAGRAM ..................................... 86
» CHASSIS LAYOUT ............................................. 62 » PRINTED WIRING BOARD ASSEMBLIES...... 159
» SYSTEM BLOCK DIAGRAM (AVC System) ...... 66 » PARTS LIST ..................................................... 204
» SIGNAL FLOW BLOCK DIAGRAM » PACKING OF THE SET ................................... 246
(AVC System) ..................................................... 68




SHARP CORPORATION
LC-30HV4E


IMPORTANT SERVICE SAFETY PRECAUTION
Ë Service work should be perfomed only by qualified service technicians who are thor-
oughly familiar with all safety checks and the servicing guidelines which follow:

WARNING » Use an AC voltmeter having with 5000 ohm per volt,
or higher, sensitivity or measure the AC voltage drop
1. For continued safety, no modification of any circuit across the resisor.
should be attempted. » Connect the resistor connection to all exposed metal
2. Disconnect AC power before servicing. parts having a return to the chassis (antenna, metal
cabinet, screw heads, knobs and control shafts,
CAUTION: FOR CONTINUED PROTECTION escutcheon, etc.) and measure the AC voltage drop
AGAINST A RISK OF FIRE REPLACE ONLY WITH across the resistor.
SAME TYPE FUSE. All checks must be repeated with the AC cord plug
AVC SIDE: F701 (T2A, 250V), F702 (T2A, 250V), connection reversed. (If necessary, a nonpolarized
F1702 (T4AL, 250V) FUSE. adaptor plug must be used only for the purpose of
LCD SIDE: F1(T3.15AL, 250V), F6551, F6552, F6553, completing these checks.)
F6554, F6555, F6556 (T2.5AL, 250V) Any reading of 35V peak (this corresponds to 0.7
milliamp. peak AC.) or more is excessive and
BEFORE RETURNING THE RECEIVER indicates a potential shock hazard which must be
(Fire & Shock Hazard) corrected before returning the monitor to the owner.
Before returning the receiver to the user, perform
the following safety checks:
1. Inspect all lead dress to make certain that leads are
not pinched, and check that hardware is not lodged
between the chassis and other metal parts in the
receiver. DVM
2. Inspect all protective devices such as non-metallic AC SCALE
control knobs, insulation materials, cabinet backs,
adjustment and compartment covers or shields, 50k ohm
10W
isolation resistor-capacitor networks, mechanical
insulators, etc.
3. To be sure that no shock hazard exists, check for
leakage current in the following manner.
» Plug the AC cord directly into a 110~240 volt AC outlet, 0.15 µF
and connect the DC power cable into the receiver's TEST PROBE
DC jack. (Do not use an isolation transformer for this
test).
» Using two clip leads, connect a 1.5k ohm, 10 watt
resistor paralleled by a 0.15µF capacitor in series TO EXPOSED
CONNECT TO
with all exposed metal cabinet parts and a known METAL PARTS
KNOWN EARTH
earth ground, such as electrical conduit or electrical GROUND
ground connected to an earth ground.
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SAFETY NOTICE
Many electrical and mechanical parts in Plasma Display and shaded areas in the Replacement Parts List and
television have special safety-related characteristics. Schematic Diagrams.
These characteristics are often not evident from visual For continued protection, replacement parts must be
inspection, nor can protection afforded by them be identical to those used in the original circuit.
necessarily increased by using replacement components The use of a substitute replacement parts which do not
rated for higher voltage, wattage, etc. have the same safety characteristics as the factory
Replacement parts which have these special safety recommended replacement parts shown in this service
characteristics are identified in this manual; electrical manual, may create shock, fire or other hazards.
components having such features are identified by " å"
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21210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321

2
LC-30HV4E


SPECIFICATIONS
Item 30"LCD COLOUR TV, Model:LC-30HV4E
LCD panel 30"Advanced Super View & BLACK TFT LCD
Number of dots 2,949,120 dots (1280 × 768 × 3 dots)
Video Colour System PAL/SECAM/NTSC 3.58/NTSC 4.43/PAL 60
TV TV-standard (CCIR) B/G, D/K, I, L/L'
Function
Receiving VHF/UHF E2­E69ch, F2­F10ch, I21­I69ch, IR A­IR Jch
Channel
CATV Hyper-band, S1­S41ch
TV-Tuning System Auto Preset 99 ch, Auto Label, Auto Sort
STEREO/BILINGAL NICAM/IGR
Brightness 430 cd/m2
Backlight 60,000 hours (at Save1)
Viewing angles H : 170° V : 170°
Audio amplifier 10W × 2
Speakers Ø 8 cm 2pcs
Terminals AVC Rear INPUT 1 SCART (AV in, RGB in, TV out)
System
INPUT 2 SCART (AV in/out, S-VIDEO in, AV Link)
INPUT 3 SCART (AV in/out, S-VIDEO in, RGB in), Component
ANTENNA 75 Din Type

AV OUTPUT Audio (Variable, Fixed), S-VIDEO out, AV out
DC OUTPUT DC6.5V 7W MAX
Front INPUT 4 S-VIDEO, AV in
PC 15 Pin mini D-Sub, Audio in (Ø 3.5mm jack)
Headphones Ø 3.5mm jack
OSD language English/German/French/Italian/Spanish/Dutch/Swedish/Portuguese/Greek/
Finnish/Russian/Turkish
Power Requirement AC 220­240 V, 50/60 Hz
Power AVC System 32 W (0.7 W Standby)
Consumption
Display 109 W (0.9 W Standby) (Method IEC60107)
Weight AVC System 5.4 kg (w/o stand), 5.5 kg (with stand)
Display 15.7 kg (w/o stand), 19.5 kg (with stand)
Operation manual, Remote control unit ( × 1), System cable ( × 1), AC cord
Accessories
( × 2), LR6 ("AA" size) Alkaline battery ( × 2), Stand unit ( × 1), Cable clamp
( × 1)




3
Part names
Display AVC System
Front view
LC-30HV4E




PC INPUT terminal (AUDIO) INPUT 4 terminal (VIDEO) Headphone
(When connecting headphones,
the sound from the speakers is
muted.)
VOLUME buttons INPUT MAIN POWER
( / ) button button
CHANNEL buttons STANDBY/ON button
(CH / ) ( )




STANDBY/ON indicator PC INPUT terminal INPUT 4 terminals (AUDIO)
(ANALOG RGB)

POWER button CLEAR* INPUT 4 terminal (S-VIDEO)


(How to open the door)

* If the AVC System is switched on but it does not appear to be operating correctly, it may need resetting. In this
case, press CLEAR, shown in the diagram, lightly with the end of a ballpoint pen or other pointed object.
This will reset the System as shown below.
· AV MODE resets to STANDARD.
· TV channel resets to channel 1.
· Dual screen resets to normal.
· Audio setting initialises.
· SRS resets to OFF.
· Image position is initialised.




4
NOTE
· Pressing CLEAR will not work if the System is in standby mode (indicator lights red).
· Pressing CLEAR will not delete channel preset or password. See page 60 for clearing the password when you know it.
See page for initialising to the factor y preset values when you forget your password.



Rear view
INPUT 3 terminals (Y, PB(CB), PR(CR)) RS-232C terminal


ANTENNA INPUT terminal INPUT 3 terminal (SCART) DISPLAY OUTPUT1 terminal
OPERATION MANUAL




Remote control sensor Remote control sensor
indicator
OPC sensor OPC indicator*

STANDBY/ON indicator

AV OUTPUT terminal AV OUTPUT terminals INPUT 1 terminal DISPLAY OUTPUT2
(S-VIDEO) (AUDIO) (SCART) terminal

*OPC: Optical Picture Control AV OUTPUT terminal INPUT 2 terminal (SCART) DC OUTPUT terminal AC INPUT terminal
(See Pages 36 and 38.) (VIDEO) (Terminal for expanded
functionality in the near
future.)
Part names Part names
Remote control unit 1 (STANDBY/ON)
To switch the power on and off.
Setting the System
2 (FREEZE/HOLD for TELETEXT) After putting the Display and the AVC System in place, connect the system cables and AC cords. Use the
TV/External input mode: Change the still image mode.
TELETEXT mode: Freeze a multi-page on screen while other cable clamp for bundling the cables.
pages are automatically updated. Press again to return to the
normal image. 1 Removing the terminal cover
13 3 (DUAL screen) Display (rear view)
Set the dual picture mode. Press again to return to normal view.
1 14 (See page 61.)
2 15 4 (WIDE MODE/ T/B/F)
TV/External input mode: Change the wide image mode.
3 16
4 TELETEXT mode: Set the area of magnification. (full/upper half/
lower half)
5 17 Press down the two
5 AV MODE
Select a video setting: AV MODE (STANDARD, DYNAMIC, MOVIE,
upper hooks to remove
6 GAME, USER), PC MODE (STANDARD, USER) (See page 51.) the cover toward you.
7 18 6 SOUND
8 19 Select the sound multiplex mode.
7 (SRS and FOCUS)*
9 Select SRS and FOCUS sound system.
20 8 (Flashback)
Press to return to the previous channel in normal viewing mode. 2 Connecting the system cable and the AC cord to the Display
10 21 Press to return to the previous page in TELETEXT mode.
11 22 9 / (VOLUME)
12 23 Set the volume.
24 10 (Reveal hidden for TELETEXT)
TELETEXT mode: Display hidden characters. AC INPUT
110V­240V



11 (SUBPAGE for TELETEXT)
25 TELETEXT mode: Change the picture mode for sub-page selecting.

12 MENU
Display the MENU screen.
13 (CHANNEL INFORMATION)




5
DISPLAY INPUT2 DISPLAY INPUT1
Display the channel information and time. AC cord

14 (INPUT SOURCE) (GREY) (WHITE)
Select an input source. (TV, INPUT 1, INPUT 2, INPUT 3, INPUT 4, Connect the plug firmly Connect the plug into the
PC) until the hooks on both terminal and secure it by
sides click. tightening the thumb screws.
15 SLEEP
Set the Sleep timer. System cable
16 (MUTE)
Mute the sound. 3 Connecting the system cable and the AC cord to the AVC System
17 0­9
TV/External input mode: Set the channel. System cable
TELETEXT mode: Set the page.
18 (Digit for channel select)
Change the digits of the selected TV channel.
NOTE
19 Colour (RED/GREEN/YELLOW/BLUE) (GREY) (WHITE)
· When using the remote control unit, point it TELETEXT mode: Select a page.
at the Display. AVC System (rear view)
20 CH /CH ( / )
* is a trademark of SRS Labs, Inc. TV/External input mode: Select the channel.
FOCUS technology is incorporated under TELETEXT mode: Set the page.
license from SRS Labs, Inc. 21 (TOP Overview for TELETEXT)
TELETEXT mode: Display an index page for CEEFAX/FLOF
information. TOP Overview for TOP programme.
22 (TELETEXT)
Select the TELETEXT mode. (all TV image, all TEXT image, TV/TEXT
image)
23 RETURN
MENU mode: Return to the previous menu screen. AC cord
24 ENTER
Execute a command.
Return to the initial image position after moving with / / / .
25 / / / (Cursor)
CAUTION
Select a desired item on the setting screen.
Move the picture on the screen. · TO PREVENT RISK OF ELECTRIC SHOCK, DO NOT TOUCH UN-INSULATED PARTS OF ANY CABLES WITH THE
AC CORD CONNECTED.
LC-30HV4E
Preparation
Setting the Display on the wall
4 Attaching the clamp to the leg of the Display
Using an optional bracket to mount the Display
LC-30HV4E




· You can ask a qualified service personnel about using an optional AN-37AG1 bracket to mount the Display
to the wall.
· Carefully read the instructions that come with the bracket before beginning work.
Hanging on the wall
AN-37AG1 wall mount bracket. (See the bracket instructions for details.)




Vertical mounting Angular mounting
5 Bundling the cables with the clamp
Display (rear view) CAUTION
· Installing the LCD Colour TV requires special skill that should only be performed by qualified service personnel.
Customers should not attempt to do the work themselves. SHARP bears no responsibility for improper mounting or
mounting that results in accident or injury.


Setting the AVC System with the stand
How to install the AVC System vertically using the stand unit.
· Use the supplied stand unit for installing the AVC System vertically in an upright position.

Stick each spacer to the Attach each cushion to Fit the stand to the AVC
stand as shown. the stand as shown. System.




6
1 2 3
Insert the stand into the AVC
Peel each spacer Peel each cushion System, making sure that the
away from the away from the thick and thin bulges of the
paper and attach Stand paper and attach stand align with the big and
to the four bulging spacer to the four areas at Stand cushion small holes on the AVC
areas on the stand. the bottom. System.
Bulge Thin bulge
Attaching point



Thick
Bulge Small bulge
Attaching point hole
Big hole

6 Closing the terminal cover
Attach the stand using the The AVC System installed
4 stand screws as shown. vertically with the stand.

Stand screw




Cables come out from
the small opening.




NOTE
· When mounting the AVC System vertically, always use the supplied stand. Be careful not to block vent holes when
standing up directly on the floor or a flat surface as this can result in equipment failure.
Using external equipment
You can connect many types of external equipment to your System, like a decoder, VCR, DVD player, PC, game
console and camcorder. To view external source images, select the input source from b on the remote
Removing the speakers
control unit or INPUT on the Display.
This unit has detachable type speakers.
You can detach the system speakers when using external amplifier/speakers.
Before detaching (or attaching) speakers, unplug the AC cord from the AC outlet.
DVD player Display
(rear view) Before attaching/detaching speakers
· Before performing work make sure to turn off the System.
· Before performing work spread cushioning over a flat surface to lay the Display on. This will prevent it from
being damaged.


1 2 Speaker 3
plug




AVC System
(rear view)

Unfasten the screws used to Take hold of the speaker and Remove the speaker plug from
secure the speakers in place. slowly slide it sideways. the terminal on the Display.
(The speaker plug is still (Do not remove the plug by
inserted, so make sure not to pulling the cord.)
pull the speaker too far.) Now the speaker can be
detached from the Display.


CAUTION
· The speaker terminals on the Display is only for the attached speakers. Do not connect any third party plug or speaker to
the terminal.
· Insert the speaker plug completely into the terminal.




7
AV Receiver VCR Decoder · Do not handle or move the Display by the speakers.
(Built-in Tuner Amp)
NOTE
· Perform the same steps for both left and right speakers.
· To attach the speakers, perform the above steps in reverse order.
AVC System
(front view)




PC Game console/Camcorder

CAUTION
· To protect all equipment, always turn off the AVC System before connecting to a decoder, VCR, DVD player, PC, game
console, camcorder or other external equipment.
· The S-video signal only outputs when "INPUT2" or "INPUT3" is selected for "Y/C", or when from the INPUT 4 terminal (S-
VIDEO). Only the S-video signal can output from the INPUT 4 terminal (S-VIDEO).

NOTE
· Please refer to the relevant operation manual (DVD player, PC, etc.) carefully before making connections.
LC-30HV4E
Appendix
RS-232C port specifications Response code format
Normal response
PC Control of the System
LC-30HV4E




· When a program is set, the display can be controlled from the PC using the RS-232C terminal. O K
The input signal (PC/video) can be selected, the volume can be adjusted and various other adjustments and
settings can be made, enabling automatic programmed playing. Return code (0DH)

· Attach an RS-232C cable cross-type (commercially available) to the supplied Din-D/sub RS-232C for the
connections.
Problem response (communication error or incorrect command)
NOTE
E R R
· This operation system should be used by a person who is accustomed to using PC.
Return code (0DH)
Communication conditions
Set the RS-232C communications settings on the PC to match the display's communications conditions. The
display's communications settings are as follows: Commands

Baud rate: 9,600 bps CONTROL CONTROL
CONTROL ITEM COMMAND PARAMETER CONTROL ITEM COMMAND PARAMETER
8 bits CONTENTS CONTENTS
Data length:
Parity bit: None POWER SETTING P O W R 0 _ _ _ POWER OFF (STANDBY) WIDE MODE W I D E 0 _ _ _ TOGGLE

1 bit INPUT SELECTION A I T G D x INPUT SWITCHING (TOGGLE) W I D E 1 _ _ _ NORMAL
Stop bit:
I T V D 0 _ _ _ TV (CHANNEL FIXED) W I D E 2 _ _ _ FULL 14:9
Flow control: None
I T V D * * _ _ TV (CHANNEL SELCTION) (1 ­ 99) W I D E 3 _ _ _ ZOOM 14:9

I A V D * _ _ _ INPUT1 ­ 4 (1 ­ 4) W I D E 4 _ _ _ PANORAMA
Communication procedure
I P C D x PC W I D E 5 _ _ _ FULL
Send the control commands from the PC via the RS-232C connector.
INPUT SELECTION B I N P 1 0 _ _ _ INPUT1 (CVBS) W I D E 6 _ _ _ CINEMA 16:9
The Display operates according to the received command and sends a response message to the PC.
I N P 1 1 _ _ _ INPUT1 (RGB) W I D E 7 _ _ _ CINEMA 14:9
Do not send multiple commands at the same time. Wait until the PC receives the OK response before sending
I N P 2 0 _ _ _ INPUT2 (CVBS) W I D E 8 _ _ _ NORMAL
the next command.
I N P 2 1 _ _ _ INPUT2 (Y/C) W I D E 9 _ _ _ FULL

I N P 3 0 _ _ _ INPUT3 (CVBS) W I D E 1 0 _ _ DOT BY DOT
Command format I N P 3 1 _ _ _ INPUT3 (Y/C) W I D E 1 1 _ _ CINEMA

Eight ASCII codes e CR I N P 3 2 _ _ _ INPUT3 (RGB) SRS S R S S 0 _ _ _ TOGGLE

I N P 3 3 _ _ _ INPUT3 (COMPONENT) S R S S 1 _ _ _ OFF
Command 4-digits: Command. The text of four characters.
C1 C2 C3 C4 P1 P2 P3 P4 Parameter 4-digits: Parameter 0 ­ 9, x, blank, ? AV MODE A V M D 0 _ _ _ TOGGLE S R S S 2 _ _ _ SRS
SELECTION




8
A V M D 1 _ _ _ STANDARD S R S S 3 _ _ _ FOCUS
Command 4-digits Parameter 4-digits Return code A V M D 2 _ _ _ DYNAMIC S R S S 4 _ _ _ SRS FOCUS

A V M D 3 _ _ _ MOVIE DUAL SCREEN T W I N 0 _ _ _ DUAL SCREEN OFF
Parameter
A V M D 4 _ _ _ GAME T W I N 1 _ _ _ DUAL SCREEN ON
Input the parameter values, aligning left, and fill with blank(s) for the remainder. (Be sure that four values are input for the A V M D 5 _ _ _ USER CHANNEL D C C H * * _ _ DIRECT CHANNEL (1 ­ 99)
parameter.) VOLUME V O L M * * _ _ VOLUME (0 ­ 60) C H U P x CHANNEL UP
When the input parameter is not within an adjustable range, "ERR" returns. (Refer to "Response code format".)
POSITION H P O S * * * _ H-POSITION (AV) ( 10 ­ 10) C H D W x CHANNEL DOWN
No problem to input any numerical value for "x" on the table.
H P O S * * * _ H-POSITION (PC) ( 90 ­ 90) TEXT T E X T 0 _ _ _ TEXT OFF

0 V P O S * * * _ V-POSITION (AV) ( 30 ­ 30) T E X T 1 _ _ _ TEXT ON (TOGGLE)

V P O S * * * _ V-POSITION (PC) ( 60 ­ 60) D C P G * * * _ DIRECT PAGE JUMP (100 ­ 899)

0 0 0 9 C L C K * * * _ CLOCK ( 90 ­ 90)

P H S E * * * _ PHASE ( 20 ­ 20)

­ 3 0

1 0 0 NOTE
· If an underbar (_) appears in the parameter column, enter a space.
0 0 5 5 · If an asterisk (*) appears, enter a value in the range indicated in brackets under CONTROL CONTENTS.

When "?" is input for some commands, the present setting value responds.
?

? ? ? ?
Appendix Basic adjustment settings
Connecting pin assignments for SCART AV input mode menu items PC input mode menu items
Various audio and video devices may be connected via the SCART terminals. List of AV menu items to help you with List of PC menu items to help you with
operations operations
1 3 5 7 9 111315171921
Picture Picture


Contrast Contrast
Brightness Brightness
Colour Red
Tint Green
Sharpness Blue
2 4 6 8 101214161820 Advanced C.M.S.
C.M.S.
Colour Temp
SCART (INPUT 1) Black
1. Audio right output 8. Audio-video control 15. Red input Monochrome
(TV Monitor out) Film Mode
9. Earth for green 16. Red/Green/Blue control
2. Audio right input I/P Setting
10. Not used 17. Earth for video
3. Audio left output DNR
11. Green input 18. Earth for Red/Green/Blue
(TV Monitor out)
control
12. Not used
4. Common earth for audio Audio Audio
19. Video output
13. Earth for red
5. Earth for blue (TV Monitor out)
14. Not used
6. Audio left input 20. Video input Treble Treble
7. Blue input 21. Plug shield Bass Bass
Balance Balance
SCART (INPUT 2) Surround . Surround
1. Audio right output 8. Audio-video control 15. Chroma S-Video input




9
2. Audio right input 9. Earth 16. Not used Power control Power control

3. Audio left output 10. AV LINK control 17. Earth for video
4. Common earth for audio 11. Not used 18. Earth Power Save Power Save
5. Earth No Signal off Power Management
12. Not used 19. TV Monitor output
No Operation off
6. Audio left input 13. Earth 20. Video input/S-video input
7. Not used 14. Not used 21. Plug shield
Setup Setup



SCART (INPUT 3) Auto Installation Input Signal
1. Audio right output 8. Audio-video control 15. Red input/Chroma S-Video Programme Setup Auto Sync.
input Child Lock Fine Sync.
2. Audio right input 9. Earth
16. Red/Green/Blue control Position Rotate
3. Audio left output 10. Not used
17. Earth for video WSS Language
4. Common earth for audio 11. Green input 4:3 Mode
18. Earth
5. Earth 12. Not used Full Mode
19. TV Monitor output Rotate
6. Audio left input 13. Earth
20. Video input/S-video input Language
7. Blue input 14. Not used
21. Plug shield
Option Option



Input Select Audio Out
Audio Out Cool Climate
Cool Climate
Colour System
LC-30HV4E
LC-30HV4E


DIMENSIONS

AVC System Unit: mm




250
183




95




5
365 180

430




10
LC-30HV4E




Display Unit: mm




84.5

305
79
545




117.5 766 117.5 84.5




643




497
608
385




364
111




545 305




1002




11
LC-30HV4E


REMOVING OF MAJOR PARTS
Ë AVC System
1. Remove the five top panel retaining screws and slide the top panel backward to remove it.
2. Remove the four side panel retaining screws on both the right and left sides and slide the side panels
backward to remove them.
3. Remove the three front panel retaining screws and remove the front panel.
4. Remove the five bottom panel retaining screws and slide the bottom panel backward to remove it.
5. Remove the four screws securing the main PWB angle and remove the angle upward.
6. Remove the four screws securing the main PWB to the angle and remove the main PWB.


1
1



Top panel


2
Side panel, left


1




2




Side panel, right



3




6




Main PWB
Front panel
5
3

4
4



Main PWB angle

4

Bottom panel




12
LC-30HV4E

7. Remove the system/control terminal retaining:
7-1. Remove the four hex head screws securing the terminals of the system and control cables (white).
7-2. Remove the two screws securing the terminal of the system cable (gray).
7-3. Remove the rear chassis retaining screw.
8. Remove the PC I/F and SR units:
8-1. Remove the four PC I/F unit shield retaining screws and remove the shield.
8-2. Remove the six PC I/F unit retaining screws and remove the I/F unit.
8-3. Remove the two PC I/F unit angle retaining screws and remove the angle.
8-4. Remove the two SR unit retaining screws and remove the SR unit.
9. Remove the rear chassis:
9-1. Remove the two tuner nuts and washers.
9-1. Remove the 13 rear chassis retaining screws and remove the rear chassis.
10. Remove the three power supply board retaining screws and remove the power supply board.

8-1