How to enter the service mode of JVC HD 70FH97, JVC HD 70FN97, service adjustments, lamp timer reset, how to replace the lamp

 

JVC HD-70FH97, HD-70FN97 D-ILA PROJECTION TELEVISION

LAMP UNIT : TS-CL110UAA

PRECAUTION FOR LAMP UNIT
The lamp emits high intensity white, ultraviolet and infrared light. Do not look directly at the light during service.
Also, do not touch the lamp directly as it presents a burn hazard.
Handle with extra care. This lamp emits high heat and contains high-pressure during use.
Do not give any impact as this may cause the broken lamp.

HOW TO CONFIRM LAMP OPERATING TIME.
• MAXIMUM COUNT TIME= 65535 hours
(1) Set to "0 minutes" using the [SLEEP TIMER] key.
(2) Press the [VIDEO STATUS] key and [DISPLAY] key simultaneously, then enter the SERVICE MODE.
(3) When the SERVICE MENU SCREEN is displayed, press [2] key to enter the SELF CHECK MODE.
(4) The use time of a lamp is displayed on middle of the screen by the hexadecimal number of 4 figures.

LAMP UNIT REPLACEMENT.
(1) The lamp replacement message will appear when need to change the lamp. After replace the lamp, need to reset the timer which is built into TV.
(2) Lamp use time can be check at the lamp message MENU.
If lamp use time exceeds 5000 hours, the message below will be displayed on a screen.
(3) If this message appears when turn the TV on, need to replace the lamp.
(4) Use the lamp timer reset only after replacing the lamp.

This message will appear every time turn on the TV, when the lamp needs to be replaced. 

Press the [OK] key to make the message disappear, or replace the lamp.

HOW TO REPLACE THE LAMP UNIT.

Turn off the TV power.
(2) After the LAMP LED light has stopped blinking, disconnect the power cord from the AC outlet.
(3) Loosen 1 screw then take out the lamp cover below the left side of the TV.
(4) Loosen 2 screws then take out the lamp unit.
(5) Install the new lamp unit.
(6) Re-install the lamp cover.
NOTE:
• After installing the new lamp unit, do not forget to reset the lamp timer.

HOW TO RESET THE LAMP TIMER.

Press the [MENU] key to select CLOCK / TIMERS.
(2) Select the <LAMP TIMER RESET> with UP/DN keys.
(3) Enter the <LAMP TIMER RESET> mode, the following message will appears.

“PRESS OK TO RESET THE LAMP TIMER”

(4) Press the [OK] key while the above message appears on the screen.
(5) The lamp timer has now been reset, and the following message will appear.

“THE LAMP TIMER IS RESET SUCCESSFULLY”

OPTICAL / DRIVE ASS'Y CONSTRUCTION

Kit part number:  TS-COP13A-SAA

Kit part name:  OPTICAL / DRIVE ASS'Y

OPTICAL / DRIVE ASS'Y CONSTRUCTION
(1) OPTICAL BLOCK
(Included D-ILA DEVICE, PROJECTION LENS)
(2) OPTICAL BASE
(3) DRIVE PWB ASS'Y
This PWB is mounted with 1 memory IC saved with adjustment, setting data of the drive circuit.
(4) SHIELD COVER
*The following parts without the kits part.
• REMOTE SENSOR PWB ASS'Y
• LAMP UNIT
• LAMP FAN DUCT
• THERMOSTAT

PRECAUTION FOR USING.
(1) In the case of the following defects/problems, replace this kit (OPTICAL/DRIVE ASS'Y).
a) Picture defect caused by optical system/D-ILA device related parts.
b) Picture defect caused by drive circuit.
(2) The DRIVE PWB ASS'Y is mounted with a memory IC [IC3753] saved with adjustment/setting data(GAMMA, SHADING, etc.) of the drive circuit.
The data of this memory IC is in the optimal state according to individual D-ILA devices and each section of the OPTICAL BLOCK.
(3) When replace the DRIVE PWB ASS'Y, take off the 1 memory IC from the original board and replace with new one. When replace the DRIVE PWB ASS'Y, do same manner. Replace 1 memory IC.
(4) After the replacement of the OPTICAL BLOCK, projection lens focus adjustment and drive convergence / projection adjustment are required.

SCREEN STORAGE
Store the SCREEN ASS'Y in a standing position in order to avoid deformation. If the screen is stored horizontally, there is risk of deforming the screen face.
When necessary to place the SCREEN ASS'Y horizontally, position the screen side upwards and sure to place spacers between the screen and resting site (floor or stand etc.) to prevent the screen from sagging.

 SPECIFIC SERVICE INSTRUCTIONS

SYSTEM SETTEING

“Be sure to carry out the following operation at the end of the procedure.”

Set to "0 minutes" using the [SLEEP TIMER] key.
(2) While "0 minutes" is displayed, press the [VIDEO STATUS] key and [DISPLAY] key simultaneously, then enter the SERVICE MODE.
(3) When the SERVICE MENU SCREEN is displayed, press [2] key to enter the self check mode.
(4) Turn off the power by pressing the [POWER] key on the remote control unit.

FEATURES
Built in ATSC (Advanced Television Systems Committee)
TUNER
This TV can receive both Digital broadcasting (ATSC) and Analogue broadcasting.
D.I.S.T. (Digital Image Scaling Technology)
This system uses line interpolation to double the number of scanning lines and achieve high resolution, flicker-free picture.
SMART CAPTION
Smart caption will appear when you press the MUTING button, only on channels where the broadcast contains CLOSED CAPTION information.
VIDEO STATUS
Expression of a favorite screen can be chosen by the VIDEO STATUS function.
DIGITAL INPUT
Digital-in will display when any picture signal in Digital-in is displayed.
V-CHIP
Since the V-CHIP is built in, it can choose, view and listen to a healthy program.

MTS STEREO
The voice multiplex function of the MTS system is built in. (MTS = Multi channel Television Sound system)
MPEG Noise Reduction
This function effects the block noise removal and mosquito NR simultaneously.
MaxxBass
This function emphasizes the bass sound.
A.H.S.+
Adds a more spacious surround sound. Music gives basic effect, and movie for more effect.
VOICE ENHANCEMENT
Gives a clearer sound quality of the voices in what you are watching.
NATURAL CINEMA
Watching the movie or animation, press the Natural Cinema to adjust the out line of the images to make thin more sharp.
VIDEO INPUT LABEL
This function is used to label video input connections for the onscreen displays.

PROJECTION UNIT

ADJUSTMENT PREPARATION

(1) There are 2 ways of adjusting this TV : One is with the REMOTE CONTROL UNIT and the other is the conventional method using adjustment parts and components.
(2) The adjustment using the REMOTE CONTROL UNIT is made on the basis of the initial setting values. The setting values which adjust the screen to the optimum condition can be different from the initial setting values.
(3) Make sure that connection is correctly made AC to AC power source.
(4) Turn on the power of the TV and measuring instruments for warning up for at least 30 minutes before starting adjustments.
(5) If the receive or input signal is not specified, use the most appropriate signal for adjustment.
(6) Never touch the parts (such as variable resistors, transformers and condensers) not shown in the adjustment items of this service adjustment.

MEASURING INSTRUMENT AND FIXTURES

• Oscilloscope
• Signal generator (Pattern generator) [NTSC / 525i / 525p / 750p / 1125i]
• TV audio multiplex signal generator
• Remote control unitADJUSTMENT ITEMS
FOCUS
• LENS FOCUS adjustment
DRIVE CIRCUIT
• DRIVE CONVERGENCE adjustment
• DRIVE CENTER POSITION adjustment
VIDEO CIRCUIT
• WHITE BALANCE (HIGHLIGHT) adjustment
MTS CIRCUIT
• MTS INPUT LEVEL adjustment
• MTS SEPARATION adjustment.

PRESET SETTING BEFORE ADJUSTMENTS

Unless otherwise specified in the adjustment items, preset the following functions with the REMOTE CONTROL UNIT.

HOW TO ENTER THE SERVICE MODE
(1) Set to "0 minutes" using the [SLEEP TIMER] key.
(2) While "0 minutes" is displayed, press the [VIDEO STATUS] key and [DISPLAY] key simultaneously, then enter the SERVICE MODE

Before entering the SERVICE MODE, confirm that the setting of TV/CATV switch of the REMOTE CONTROL UNIT is at the "TV" side and the setting of VCR/DVD switch is at the "VCR" side. If the switches have not been properly set, you cannot enter the SERVICE MODE.
• When a number key other than the [1] or [9] keys is pressed in the SERVICE MENU SCREEN, the other relevant screen may be displayed.
This is not used in the adjustment procedure. Press the [MENU] key to return to the SERVICE MENU SCREEN.

HOW TO EXIT THE SERVICE MODE
Press the [ BACK ] key to exit the Service mode.

SERVICE MODE SELECT KEY LOCATION

ADJUSTMENT MODE
This mode is used to adjust the VIDEO CIRCUIT and the MTS CIRCUIT.
HOW TO ENTER THE ADJUSTMENT MODE
When the SERVICE MENU SCREEN of SERVICE MODE is displayed, press [1] key to enter the ADJUSTMENT MODE.

DESCRIPTION OF STATUS DISPLAY OF ADJUSTMENT MODE

CHANGE AND MEMORY OF SETTING VALUE

SELECTION OF SETTING ITEM
• [CH+] / [CH-] key.
Change the setting items up/ down.

S001 ==> T001 ==> M001 ==> F001 ==>D001 ==>Z001..

[SLEEP TIMER] key.
Switches to the next items.

S001 ==>T001 ==>M001 ==>F001 ==>D001 ==>Z001

CHANGE OF SETTING VALUE (DATA)
• [VOL+] / [VOL-] key.
Change the setting values up/down.

MEMORY OF SETTING VALUE (DATA)
Changed setting value is memorized by pressing [MUTING] key.

RGB BOX PATTERN MODE

This mode is used to adjust the DRIVE CIRCUIT.

HOW TO ENTER THE RGB BOX PATTERN MODE
When the SERVICE MENU SCREEN of SERVICE MODE is displayed, press [9] key to enter the RGB BOX PATTERN MODE.

Description of status display of TGB bod pattern mode

RGB BOX PATTERN
The checkered pattern is displayed. White is a synthesis of RGB.

ADJUSTMENT COLOR MODE
Presently selected ADJUSTMENT COLOR MODE is displayed.

SELECTION OF SETTING ITEM
• [CH+] / [CH-] key.
Move the selected RGB BOX PATTERN up/ down pixel by pixel.

• [VOL+] / [VOL-] key.
Move the selected RGB BOX PATTERN left/ right pixel by pixel.
• [SLEEP TIMER] key.
Adjusts the data reset.
• [DISPLAY] key.
Adjusts the selected COLOR BOX PATTERN.

“R =>B =>RGB

• [BACK] key.
Returns to the SERVICE MENU SCREEN from the RGB BOX PATTERN MODE.

MEMORY OF SETTING VALUE (DATA)
With the RGB BOX PATTERN MODE, the changed date is written in the MEMORY instantly.

Circuit board Voltage charts