Service and Quality
Service Publications Dept.
One Philips Drive
P.O. Box 14810
Knoxville, TN 37914
Manual 7584
Model no.: PS1966C122
First Publish: 4-16-1999
Rev. Date: 5-5-1999
Print Date: 18/11/2005
Electrical Adjustments
REFER TO SAFETY GUIDELINES
SAFETY NOTICE: ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE
HIMSELF WITH THE CHASSIS AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS
TO BE USED WHEN SERVICING ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES.
CAUTION: USE A SEPARATE ISOLATION TRANSFORMER FOR THIS UNIT WHEN SERVICING
Isolation Transformer
Multimeter
Oscilloscope
High Voltage (100: 1) Oscilloscope Probe
Sencore VG91 Universal Video Generator
Caution: The E8 chassis incorporates a ”hot“ ground system. Always use a separate isolation
transformer when applying power to the exposed chassis.
Service Adjustm e nt N ote s:
Unless Otherwise Specified:
1. All service adjustments are ”hot“ voltagewise. For maximum safety, ensure the use of properly
insulated tools.
2. Refer to the E8 Main Chassis Printed Circuit Board for location of test points and adjustable
components.
3. Grid Locations (Ex.: D-3) next to the reference numbers for components refer to the Main Chassis
Printed Circuit Board.
Focus Adjustment
1. Tune the set to a local or cable station.
2. Adjust the Focus Control (located on the upper part of the flyback transformer) for best picture details
at high light conditions.
Degaussing the Television
1. Position the television so that the screen faces the direction it will be facing when in use.
2. Ensure the set is turned off.
3. Move a degaussing coil in a circular motion slowly around the sides and front of the set.
4. Withdraw the degaussing coil at least six feet from the television before disconnecting it from its
power source.
Service Mode
Introduction
1. There are three service modes used in the E8 chassis. They are:
a. SDM - Service Default Mode
b. SAM - Service Alignment Mode
c. CSM - Customer Service Mode
2. The Service Default Mode (SDM) is a technical aid for the service technician. It is used for setting of
options, reading error codes, and erasing error codes. This mode displays the Run Timer, Software
Version, and current option settings. Service Default Mode (SDM) also establishes a fixed,
repeatable setting of controls to allow measurements to be made. On screen display is kept at a
minimum to reduce the cluttering of wave forms with unwanted information.
3. The Service Alignment Mode (SAM) is used to make tuning adjustments, align the white tone, adjust
the picture geometry, and make sound adjustments.
4. The Customer Service Mode shows error codes and information on the TV operation settings. The
servicer can instruct the customer to enter CSM by telephone and read off the information displayed.
This helps the servicer to diagnose problems and failures in the TV set before making a service call.
5. When in a service mode, "SDM" (for Service Default Mode) or ”SAM“ (for Service Alignment Mode) or
”CSM“ (for Customer Service Mode) will be displayed (in green) in the top right corner of the screen.
All other On Screen Display (except highlighted items in SDM or SAM) will be in red.
6. It will be memorized in the EEPROM that the TV set is in SDM or SAM. This is necessary because
the TV must show up in SDM or SAM again after an ac power interrupt.
7. When the television is in SAM or SDM, all normal features (such as volume control and direct
channel access) are available.
EEPROM Replacement or Defective EEPROM
After replacing a EEPROM (or with a defective/no EEPROM) default settings will be used that enable the
set to start up and that allow access to the Service Default Mode and Service Alignment Mode.
Service unfriendly modes
In the service modes, a number of modes/features are ignored since they interfere with diagnosing or
repairing a set. These are ”service unfriendly modes.“
”Ignoring“ means that the event that is triggered is not executed; the setting remains unchanged
(Example: Timer OFF: 8:00 PM; the set will not switch OFF in service mode at 8:00PM, but the setting will
remain).
The service unfriendly modes are:
• (Sleep) timer
• Blue mute
• Auto switch off (when there is no video signal identified)
• Hotel or hospital mode
• Smart lock or blocking by V-chip
• Skipping and/or blanking of ”Not Favorite“ channels
• Automatic storing of Personal Preset settings
• Automatic user menu time-out (menu switches back or OFF automatically)
Service Default Mode (SDM)
1. The Service Default Mode (SDM), set the option codes and bytes of the set, and display the error
codes (the Power LED begins blinking procedure for error code display, if errors are detected). SDM
also overrides software protections.
The Service Default Mode (SDM) must be used when taking voltages and waveforms.
2. To enter the Service Default Mode, press the following key sequence on the remote control
transmitter:
0-6-2-5-9-6-Menu
Do not allow the display to time out between entries while keying the sequence.
SDM can also be entered by pressing the Channel Down and Volume Down keys on the local
keyboard simultaneously while in SAM mode.
When Service Default Mode is entered, the text "SDM" will be displayed in the upper right corner of
the screen.
3. When Service Default Mode is entered, the Power LED will begin blinking to display any detected
error codes, the set automatically tunes to Channel 3 (61.25 MHz), and service unfriendly modes are
disabled. All customer controls are set to predetermined values.
4. When the unit is operating in Service Default Mode, all normal on-screen displays are suppressed
and replaced by a special service display. A sample SDM display is shown below.
5. To select an option code or option byte in SDM, use the Menu Up or Menu Down keys on the remote
control.
6. To change the value of an option code, use the Menu Left or Menu Right keys.
7. To change the value of an option byte, use the Menu Left or Menu Right keys, or enter the new value
using the numeric keys on the remote control.
8. Press the Status button on the remote control to toggle the OSD (except ”SDM“) ON and OFF to
prevent the OSD from interfering with measurements and oscilloscope waveforms.
9. Press the Menu button on the remote control while in SDM to switch the software to a Virtual
Customer Mode; the text "SDM" will still be displayed in the upper right corner of the screen. In this
mode, all customer menu adjustments to the set can be made. From the Virtual Customer Mode,
press the Menu button to return to the SDM display.
10. To exit the Service Default Mode and erase the error codes, turn the unit off with the Power button on
the remote control, then unplug the ac cord.
11. To exit the Service Default Mode and save the error codes, unplug the ac cord to turn off the set.
When the set is turned on again, the Service Default Mode will still be active.
Explanation of Display:
Run Timer
The run timer counts the normal operation hours, not the standby hours. The actual value of the run timer
is displayed in SDM and CSM. The run timer displays hours in hexadecimal format. This display will
increment based on the amount of time the set has been on. The timer will also be incremented one hour
each time the set is turned on.
Software Identification, Cluster, and Version
The software identification, cluster, and version will be shown in the service main menu display.
These numbers consist of the last part of the customer identification printed on the IC package; the
screen will show ”AAABBC-X.Y“. (Example: L90US1 1.2)
− AAA is the engineering project name (Ex: L90 = L9.0).
− BB is a function specification indicating specific functionality or a region (Ex: US). Processors with the
same engineering project name and function name are interchangeable, except for the languages
they support.
− C is the language cluster number within the ”BB“ software version (Ex: 1 = English/Spanish/French)
− X is the main version number (Ex: 1)
− Y is the sub version number (Ex: 2)
− the main version number is updated with a major change of specification (incompatible with the
previous software version)
− the sub version number is updated with a minor change (backwards compatible with the previous
versions)
− if the main version number changes, the new version number is written in the EEPROM
− if the main version number changes, the default settings are loaded
− if the sub version number changes, the new version number is written in the EEPROM
− if the EEPROM is fresh, the software identification, version and cluster will be written to EEPROM
− Note: a new micro controller is considered to be compatible if it works instead of the old software and
the functionality is not significantly changed.
Error Buffer
Error codes are required to indicate failures in the television. For intermittent complaints, always check
the error buffer. A unique error code is available for:
The last five errors, remembered in the EEPROM, are shown in the service menu. This is called the error
buffer.
The error that is found last is displayed on the left, except when protection (1 to 3) is active.
Errors 1, 2, and 3 are often shown at the right of the error buffer display whenever they are detected.
Example 1:
Suppose the display shows: 8 – 11 – 2– 0 – 0
With 2 displayed at the right of the error buffer, high beam current protection is active.
Example 2:
Suppose the display shows: 11 – 4 – 5– 3 – 0
With 3 displayed at the right of the error buffer, vertical protection is active.
The following error codes have been defined:
Error Code Table
0= No error
1= X-Ray / overvoltage protection active
2= High beam current (BCI) protection active
3= Vertical protection active
4= I²C error while communicating with the sound processor (IC 7803)
5= Signal processor (IC 7250) start-up error
6= I²C error while communicating with the signal processor IC (IC 7250)
7
General I²C error means: no I²C device is responding to the particular I²C bus.
*
Possible causes: SCL short circuit to GND, SDA short circuit to GND, SCL short
circuit to SDA, SDA open circuit (at IC 7600), SCL open circuit (at IC 7600)
Reading Error Codes
Error codes are displayed in the following ways:
1. By SDM display or CSM display
2. By blinking Power LED
1. If the on screen display is working, enter SDM or CSM and read the error buffer display.
2. If the on screen display is not
a. Remove ac power
b. Use a jumper to connect pin 0224 to pin 0228 at IC 7601 (D-3)
c. Apply ac power; read the error codes (see LED Sequence List below)
d. If there is no LED indication, take the following steps as needed:
Power on
Press 0–6–2–5–9–6–Menu on the remote control
Note: Some indications take 30 seconds or longer to appear on the LED.
3. LED Sequence List:
a. Wait for long LED on (1.5 seconds)
b. Count the following on
Example:
Start(3) (2)Start
working, do the following:
flashes (individu al errors are separated by 1.5 seconds LED off)
4. Displayed error codes are saved by removing the ac power. Displayed error codes are erased b y
pressing the power button on the remote control or local keyboard.
Option Code and Status
The following options in SDM can be identified:
Note: All options may not be available in some sets.
OPTIONOPVALUES
SystemSYSS (This option is not used in US models)
Option Byte 1
Option Byte 2
Option Byte 3
Option Byte 4
Option Byte 5
Option Byte 6
Option Byte 7
Slider Bar Value Display
Animated Menu
Hospital ModeHSOFF/ON
Hotel ModeHTOFF/ON
Demo ModeDMOFF/ON
Games ModeGMOFF/ON
Clock (Volatile)CKOFF/ON
Child LockCLOFF/ON
V-ChipVCOFF/ON
V-Chip Block UnratedVUOFF/ON
Block No Rating (V-Chip)VNOFF/ON
Smart SoundSSOFF/ON
Smart PictureSPOFF/ON
Remote Control TypeRCOFF = RC0702/04 remote control / ON = All other remote controls
Channel Select Time WindowTWOFF = 2-second time window / ON = 5-second time window
SurfSFOFF/ON
Video Mute (Channel Change)VMOFF/ON
Tuner TypeTNOFF = Philips tuner / ON= ALPS tuner
Fine TuningFTOFF/ON
AV1XTOFF/ON
AV22XOFF/ON
Auto Cable DetectCDOFF/ON
Blue MuteBMOFF/ON
No Ident (Auto Standby)NIOFF/ON
Noise ReductionNROFF/ON
Contrast PlusCPOFF/ON
Color TemperatureCTOFF/ON
East-West FunctionsEWOFF/ON (This option is not used in US models)
Video Processor StandbyBSOFF/ON
Video Processor Auto StartupASOFF/ON
Bass/Treble Control/BoostBTOFF/ON
Incredible SurroundISOFF/ON
Volume LimiterVLOFF/ON
Ultra BassUBOFF/ON
Automatic Volume Leveller (AVL)LVOFF/ON
SAP - Mono/StereoDUOFF/ON
Audio Out (Fixed/Variable)AOOFF/ON
Sound TypeSTBG/I/DK/M (Should remain on M)
Sound BoardSBDB = DBX/SAP (BTSC)
OB1
OB2
OB3
OB4
OB5
OB6
OB7
DP
AM
Option Bytes 1 through 7 are used to set 8 options simultaneously with one
byte (when the option byte is highlighted, the value can be keyed in with
the numerical buttons on remote control or changed with the Menu
Up/Down keys on the remote control).
Values = 0 – 255
See the Chassis Feature Listing to see the values for Option Bytes 1
through 7. These values can be used to set the option package for a
particular model.
OFF/ON
OFF/ON
EC = BTSC stereo (No SAP)
MA = Mono All
Sound BoardSBDB = DBX/SAP (BTSC)
EC = BTSC stereo (No SAP)
MA = Mono All
MS = Bi Sonic (Mono by tuner, stereo by A/V jacks)
Option SY : System
Function: Set the multi system hardware configuration
Values: SS (This option is not used in US models)
OB 1 – OB 7 : Option Byte 1 – Option Byte 7
Function: Set 8 options simultaneously with one byte
(value can be keyed in with numerical buttons on remote control or changed with the
Menu Up/ Down keys on the remote control)
Values: 0 – 255
Option DP : Slider Bar Value Display
Function: Enable/disa ble slider bar value display in customer menu
Values: OFF = Disable sl ider bar value di splay
ON = Enable slider bar value display
Option AM : Animated Menu
Function: Enable/disable animated menu
Values: OFF = Disable animated menu display
ON = Enable animated menu display
Option HS : Hospital Mode
Function: Enable/disable the possibility to enter hospital mode
Values: OFF = Disabled, hospital mode cannot be entered
ON = Enabled, hospital mode can be entered
Option HT : Hotel Mode
Function: Enable/disable the possibility to enter hotel mode
Values: OFF = Disabled, hotel mode cannot be entered
ON = Enabled, hotel mode can be entered
Option DM : Demo Mode
Function: Enable/disable the possibility to enter demo mode
Values: OFF = Disabled, demo mode is not active
ON = Enabled, demo mode is active
Option GM : Games Mode
Function: Enable/disable games function
Values: OFF = Disabled, G ames command is ignored
ON = Enabled, Games command is processed
Option CK : Clock (Volatile)
Function: Enable/disable clock function
Values: OFF = Disabled, clock menu not available
ON = Enabled, clock menu available
Option CL : Child Lock
Function: Enable/disable child lock function
Values: OFF = Disabled, child lock menu not availabl e
ON = Enabled, child lock menu available
Option VC : V-Chip
Function: Enable/disable v-chip function (customer menu item Smartlock)
Values: OFF = Disabled, v-chip menu (customer menu item Smartlock) not available
ON = Enabled, v-chip menu (customer menu item Smartlock) available
Option VU : V-Chip Block Unrated
Function: Enable/disable V-Chip block unrated (in Smartlock menu)
Values: OFF = Disabled, V-Chip block unrated (in Smartlock menu) not available
ON = Enabled, V-Chip block unrated (in Smartlock menu) available
Option VN : Block No Rating (V-Chip)
Function: Enable/disable block no ratingV-Chip (in Smartlock menu)
Option SS : Smart Sound
Function: Enable/disable smart sound function
Values: OFF = Disabled, Smart Sound command is ignored
ON = Enabled, Smart Sound command is processed
Option SP : Smart Picture
Function: Enable/disable smart picture function
Values: OFF = Disabled, Smart Picture command is ignored
ON = Enabled, Smart Picture command is processed
Option RC : Remote Control Type
Function: Choose the type of remote control to be used
Values: OFF = RC0702/04 remote control
ON = All other remote controls
Note: If changed when using the RC0702/04, this option can only be returned to the original setting
by option byte correction.
Option TW : Channel Select Time Window
Function: Select time window for channel selection
Values: OFF = 2-second time window for channel selection
ON = 5-second time window for channel selection
Option SF : Surf
Function: Enable/disable the possibility to enter surf mode
Values: OFF = Disabled, customer menu item Surf not available and A/CH command alternates
channels
ON = Enabled, customer menu item Surf available and A/CH command surfs or
alternates channels
Option VM : Video Mute (Channel Change)
Function: Enable/disable video mute during channel change
Values: OFF = Disabled, no video mute during channel change
ON = Enabled, video muted during channel change
Option TN : Tuner Type
Function: Choose the tuner type that is configured in the hardware
Values: OFF = Philips tuner (A Philips tuner will have the Philips name embossed on the side)
ON = ALPS tuner (An ALPS tuner will not
have the Philips name embossed on the side)
Option FT : Fine Tuning
Function: Enable/disable fine tuning
Values: OFF = Customer menu item fine tuning disabled
ON = Customer menu item fine tuning enabled
Option XT : AV1
Function: Enable/disable external input source 1 (Ext 1)
Values: OFF = Disabled, external input source 1 (Ext 1) not available
ON = Enabled, external input source 1 (Ext 1) available
Option 2X : AV2
Function: Enable/disable external input source 2 (Ext 2)
Values: OFF = Disabled, external input source 2 (Ext 2) not available
ON = Enabled, external input source 2 (Ext 2) available
Option CD : Auto Cable Detect
Function: Enable/disable automatic detection of Cable/Broadcast during autostore.
Values: OFF = Disabled, autostore uses the selected Cable/Broadcast setting
ON = Enabled, autostore will detect and set Cable/Broadcast mode
Option BM : Blue Mute
Function: Enable/disable blue mute when no television station signal is present
Values: OFF = Disabled, no blue mute when no television station signal is present
ON = Enabled, blue mute active when no television station signal is present
Option NI : No Ident (Auto Standby)
Function: Enable/disable automatic switch to standby after 10 minutes when no television station
signal is present
Values: OFF = Disabled, no automatic switch to standby
ON = Enabled, set switches to standby after 10 minutes when no television station signal
is present
Option NR : Noise Reduction
Function: Enable/disable noise reduction function
Values: OFF = Disabled, customer menu item Noise Reduction not available
ON = Enabled, customer menu item Noise Reduction available
Option CP : Contrast Plus
Function: Enable/disable contrast plus function
Values: OFF = Disabled, customer menu item Contrast Plus not available
ON = Enabled, customer menu item Contrast Plus available
Option CT : Color Temperature
Function: Enable/disable color temperature function
Values: OFF = Disabled, customer menu item Color Temperature not available
ON = Enabled, customer menu item Color Temperature available
Option EW : East-West Functions
Function: Enable/disable east-west control function (This option is not used in US models)
Values: OFF = Disabled, east-west alignment not available in SAM (EWW, EWP, EWC, EWT)
ON = Enabled, east-west alignment available in SAM (EWW, EWP, EWC, EWT)
Option BS : Video Processor Standby
Function: Enable/disable video processor standby
Values: OFF = Disabled, video processor standby is not active
ON = Enabled, video processor standby is active
Option AS : Video Processor Auto Startup
Function: Enable/disable video processor auto-startup
Values: OFF = Enabled, video processor is in auto-startup mode
ON = Disabled, video processor is switched on under control of microcontroller
Option BT : Bass/Treble Control/Boost
Function: Enable/disable bass and treble function
Values: OFF = Disabled, customer menu items Bass and Treble not available
ON = Enabled, customer menu items Bass and Treble available
Option IS : Incredible Surround
Function: Enable/disable incredible surround function
Values: OFF = Disabled, incredible surround function not available
ON = Enabled, incredible surround function available
Option VL : Volume limiter
Function: Enable/disable volume limiter
Values: OFF = Disabled, customer menu item Volume Limiter not available
ON = Enabled, customer menu item Volume Limiter available
Option UB : Ultra Bass
Function: Enable/disable ultra bass function
Values: OFF = Disabled, ultra bass function not available
ON = Enabled, ultra bass function available
Option LV : Automatic Volume Leveller (AVL)
Function: Enable/disable automatic volume leveller function
Values: OFF = Disabled, customer menu item AVL not available
ON = Enabled, customer menu item AVL available
Option DU : SAP
Function: Set SAP configuration (sets with DBX stereo system only)
Values: OFF = Disabled, stereo/SAP not available
ON = Enabled, stereo/SAP available
Option AO : Audio Out (Fixed/Variable)
Function: Set audio output type (where present)
Values: OFF = Fixed audio out
ON = Variable audio out (always on)
Option ST : Sound Type
Function: Set the sound type
Values: BG PAL system
I PAL system
DK PAL system
M Default for USA
Option SB : Sound Board
Function: Set the sound board configuration
Values: DB = DBX/SAP (BTSC)
EC = BTSC stereo (No SAP)
MA = Mono All
MS = BiSonic (Mono from tuner, Stereo from A/V jacks)
Service Alignment Mode (SAM)
1. The Service Alignment Mode (SAM) is used to make tuning adjustments, align the white tone, adjust
the picture geometry, and make sound adjustments.
2. To enter the Service Alignment Mode (SAM), press the following key sequence o n the remo te co ntrol
transmitter: 0-6-2-5-9-6-Status
Do not allow the display to time out between entries while keying the sequence.
SAM can also be entered by pressing the Channel Down and Volume Down keys o n the local
keyboard simultaneously while in SDM mode. When Service Alignment Mode is entered, the text
"SAM" will be displayed in the top right corner of the screen.
3. When Service Alignment Mode is entered, service unfriendly modes are disabled.
The following volatile SAM item values are set:
♦ AKB = 0
♦ VSD = 0
♦ AFW = 275 kHz
♦ SBL = 0
4. Wh en the unit is operating in Service Alignment Mode, a ll normal on-screen displays are suppressed
and replaced by a special service display. The first screen seen up on entering SAM is the ”top level
SAM menu.“ The service technician must return to the top level SAM menu before exiting with a
power-off command. A sample SAM top level menu display is shown below.
Explanation of top level SAM menu display:
The Software Identification, Cluster, and Version are explained in the Service Default Mode
section under ”Explanation of Display.“
The Menu Items and Sub Menus are explained below.
Note: The ”Audio“ sub menu will not be seen on screen when Service Alignment Mode is
first entered. Use the Menu Up and Menu Down buttons on the re mote control to view
all menu items and sub menu choices.
5. To select a menu item or a sub men u in SAM, use the Menu Up or Menu Down keys on the remote
control to highlight the item or menu you wish to adjust.
6. To c hange the value of a highlighted SAM menu item (AKB or VSD), use the Menu Left or Menu
Right keys on the remote control.
7. To enter a highlighted SAM sub menu, use the Menu Left or Menu Right keys.
After entering the sub menu, use the Menu Up or Menu Down to select an item within the sub menu.
Use the Menu Left or Menu Right keys to change the value of the selected item.
Press the Menu button to return to the top level SAM menu.
8. Press the Menu button on the remote control while in SAM to switch the software to a Virtual
Customer Mode; the text "SAM" will still be displayed in the upper righ t corner of the screen. In this
mode, all customer menu adjustments to the set can be made. From the Virtual Customer Mode,
press the Menu button to return to the SAM Menu.
9. Press the Status button on the remote control to toggle the OSD (except ”SAM“) ON and OFF.
10. To exit the Service Alignment Mode, turn the set off with the Power button on the remote control. To
turn off the set without exiting SAM (or erasing any stored error codes), unplug the ac cord. When the
set is powered on again, the Service Alignment Mode will still be active.
Note: When SAM is exited or a power interrupt occurs, the volatile SAM items AKB, VSD, AFW, and
SBL will be reset to their original values.
Main Menu
The SAM main menu contains the following items:
− AKB
− VSD
− Tuner sub menu
− White Tone sub menu
− Geometry sub menu
− Audio sub menu (on stereo chassis)
Menu: MAINValuesRemarks
AKBBlack current loop
(Auto Kine Bias)
VSDVertical scan
disable
TUNER
WHITE TONE
GEOMETRY
AUDIO
OFF/ON (0/1)
OFF/ON (0/1)
>
>
>
>
Available onl y on st ere o chassis
Tuner sub menu
The tuner sub menu contains the following items:
− IF-PLL
− AFW
− AGC
− YD
− CL
− AFA and AFB
The items AFA and AFB cannot be selected, they are for monitoring purposes only.
The item values are stored in EEPROM if this sub menu is left.
A sample display of the Tuner sub menu is shown below.
Tuner Adjustment:
Sub Menu: TUNERValues Remarks
IF-PLLIF-PLL alignment0 – 127This adjustment is auto-aligned (no action required)
AFWAFC window125/275 kHzAlways set to 275 kHz
AGCAGC takeover point 0 – 63See below
YDY-delay adjustment 0 – 15Always set to 12 (no effect)
CLCathode drive level 0 – 7Always set to 4
AFA0 / 1read only, not accessible
AFB0 / 1read only, not accessible
AGC Takeover Point (AGC):
1. Enter the Service Alignment Mode (SAM) by pressing the following key sequence on the remote
control transmitter:
0-6-2-5-9-6-Status
Do not allow the display to time out between entries while keying the sequence.
2. From the top level SAM menu, use the Menu Up/Down keys to highlight the Tuner sub menu.
3. Use the menu left/right keys to enter the Tuner sub menu.
4. In the Tuner sub menu, use the Menu Up/Down keys to high light AGC.
5. Use the Menu Right key to raise the value of AGC until snow appears in the picture.
6. Then use the Menu Left/Right keys to reduce AGC value until the snow disappears.
a. AGC values between 10 and 20 are nominal.
b. Single digit AGC values may cause overload.
7. Upon completion of Tuner adjustment, press the Menu button to return to the top level SAM menu.
White Tone sub menu
The white tone sub menu contains the following items:
− Normal Red
− Normal Green
− Normal Blue
− Delta Cool Red
− Delta Cool Green
− Delta Cool Blue
− Delta Warm Red
− Delta Warm Green
− Delta Warm Blue
Note: Delta values are only used in models with the item ”Color Temperature“ in the customer
menu.
OSD is kept to a minimum in this menu, in order to make white tone alignment possible.
The item values are stored in EEPROM if this sub menu is left.
The Contrast Plus feature (black stretch) is set to OFF when the White Tone sub menu is entered.
A sample display of the White Tone sub menu is shown below.
Sub Menu: WHITE TONEValue RangeRemarks
NORMALStarting Values:
NORMAL RED0 – 6332
NORMAL GREEN 0 – 6323
NORMAL BLUE0 – 6325
COOL
DELTA COOL RED0Delta values are a change of the normal values.
DELTA COOL
GREEN
DELTA COOL
BLUE
WARM
DELTA WARM
RED
DELTA WARM
GREEN
DELTA WARM
BLUE
Default Value
These start at the default values, and are set to
achieve cool and warm steps of color temperature in
the customer menu.
Standard factory settings are given as the default
values.
+1
+7
0
-4
-12
White Tone Adjustments:
Note: The following procedure was performed with a Sencore VG91 Universal Video Genera tor providing
grey scale bars.
1. Enter the Service Alignment Mode (SAM) by pressing the following key sequence on the remote
control transmitter:
0-6-2-5-9-6-Status
Do not allow the display to time out between entries while keying the sequence.
2. From the top level SAM menu, use the Menu Up/Down keys to highlight the White Tone sub menu.
3. Use the Menu Left/Right keys to enter the White Tone sub menu.
4. Set the VG91 Generator as follows: STD TV Ch. 3, RF-IF Range set to HI, RF-IF Level set to
NORMAL (1), Video Pattern = Raster, R-G-B raster controls OFF.
5. Connect the RF output of the generator to the Television Antenna Input, a nd adjus t the VG91 level to
remove any snow from the raster.
6. Turn off chroma at generator and leave grey scale bars.
7. From the White Tone su b-menu, use the Menu Up/Down keys to select Normal Red, Normal Green,
or Normal Blue. Then use the Menu Left/Right keys to adjust the values to obtain the best white
balance.
8. A reasonable starting point for NORMAL is:
Normal Red=37, Normal Green=33 , Normal Blue=35
9. After NORMAL is set, use the same method to set DELTA COOL and DELTA WARM as offsets.
A reasonable starting point for DELTA COOL is:
Delta Cool Red=0, Delta Cool Green=+1, Delta Cool Blue=+3
A reasonable starting point for DELTA WARM is:
Delta Warm Red=0, Delta Warm Green=-6, Delta Warm Blue=-5
10. After the values are set, or if no changes are required, press Menu to return to the top level SAM
menu.
Geometry sub menu
OSD is kept to a minimum in this sub menu in order to make picture geometry adjustments possible.
The item values are stored in EEPROM if this sub menu is left.
The value of item Service Blanking (SBL) is not stored in EEPROM, and it is set to OFF when the
geometry sub menu is exited.
A sample display of the Geometry sub menu is shown below.
The picture geometry sub menu contains the following items:
Sub Menu:
VAM
VSLVertical slope0 – 63
SBLService blankingON/OFF
HSHHorizontal shift0 – 63
EWWE-W width0 – 63Not used
EWPE-W parabola/width0 – 63Not used
EWTE-W trapezium0 – 63Not used
EWCE-W corner parabola0 – 63Not used
H60Delta HSH for 60 Hz0 – 15Not used
V60Delta VAM for 60 Hz0 – 15Not used
VSCVertical S-Correction0 – 63
VSHVertical shift0 – 63
GEOMETRY
Vertical amplitude
Values
0 – 63
Remarks
Geometry Adjustments:
Notes:
1. The following Geometry adjustments were performed with a Sencore VG91 Universal Video
Generator.
2. Set the VG91 Generator as follows: STD TV Ch. 3, RF-IF Range set to HI, RF-IF Level set to
NORMAL (1), Video Pattern = Raster, R-G-B raster controls OFF, crosshatch or center cross pattern
as required.
3. Connect the RF output of the generator to the Television Antenna Input, a nd adjus t the VG91 level to
remove any snow from the raster.
Vertical Shift (VSH):
1. Enter the Service Alignment Mode (SAM) by pressing the following key sequence on the remote
control transmitter:
0-6-2-5-9-6-Status
Do not allow the display to time out between entries while keying the sequence.
2. From the top level SAM menu, use the Menu Up/Down keys to highlight the Geometry sub menu.
3. Use the Menu Left/Right keys to enter the Geometry sub menu.
4. In the Geometry sub-menu, use the Menu Up/Down buttons to select VAM.
5. Input a center cross pattern to the antenna/cable input terminal.
6. Using the Menu Left/Right keys, adjust VSH so that the horizontal bar is properly centered, top to
bottom.
7. If other Geometry adjustments are needed, proceed to the necessary adjustment using the Menu
Up/Down buttons.
8. Upon completion of Geometry adjustments, press the Menu button to return to the top level SAM
menu.
Vertical Amplitude (VAM):
1. Enter the Service Alignment Mode (SAM) by pressing the following key sequence on the remote
control transmitter:
0-6-2-5-9-6-Status
Do not allow the display to time out between entries while keying the sequence.
2. From the top level SAM menu, use the Menu Up/Down keys to highlight the Geometry sub menu.
3. Use the Menu Left/Right keys to enter the Geometry sub menu.
4. In the Geometry sub-menu, use the Menu Up/Down buttons to select VAM.
5. Input a crosshatch pattern to the antenna/cable input terminal.
6. Using the Menu Left button, reduce the value so that the picture does not fill the entire screen.
7. Use the Menu Up/Do wn keys to select VSH (Vertical Shift) from the Geometry sub-menu a nd, using
the Menu Left/Right keys, center the picture on the screen, top to bottom.
8. Using the cursor up/down keys, select VAM from the Geometry sub-menu, and use the Menu Right
key to increase the value to obtain a slight overscan.
9. If other Geometry adjustments are needed, proceed to the necessary adjustment using the Menu
Up/Down buttons.
10. Upon completion of Geometry adjustments, press the Menu button to return to the top level SAM
menu.
Horizontal Shift (HSH):
Note: This adjustment centers the video on the raster. It does not move the raster.
1. Enter the Service Alignment Mode (SAM) by pressing the following key sequence on the remote
control transmitter:
0-6-2-5-9-6-Status
Do not allow the display to time out between entries while keying the sequence.
2. From the top level SAM menu, use the Menu Up/Down keys to highlight the Geometry sub menu.
3. Use the Menu Left/Right keys to enter the Geometry sub menu.
4. In the Geometry sub-menu, use the Menu Up/Down buttons to select HSH.
5. Input a center cross pattern to the antenna/cable input terminal.
6. Using the Menu Left/Right keys, adjust HSH so that the vertical bar is properly centered, left to right.
7. If other Geometry adjustments are needed, proceed to the necessary adjustment using the Menu
Up/Down buttons.
8. Upon completion of Geometry adjustments, press the Menu button to return to the top level SAM
menu.
Vertical Slope (VSL):
1. Enter the Service Alignment Mode (SAM) by pressing the following key sequence on the remote
control transmitter:
0-6-2-5-9-6-Status
Do not allow the display to time out between entries while keying the sequence.
2. From the top level SAM menu, use the Menu Up/Down keys to highlight the Geometry sub menu.
3. Use the Menu Left/Right keys to enter the Geometry sub menu.
4. In the Geometry sub-menu, use the Menu Up/Down buttons to select VSL.
5. Input a crosshatch pattern to the antenna/cable input terminal.
6. Using the Menu Left/Right keys, adjust VSL so that the squares at the bottom of the screen are equa l
in size to the squares at the top of the screen.
7. If other Geometry adjustments are needed, proceed to the necessary adjustment using the Menu
Up/Down buttons.
8. Upon completion of Geometry adjustments, press the Menu button to return to the top level SAM
menu.
Vertical S-Correction (VSC):
1. Enter the Service Alignment Mode (SAM) by pressing the following key sequence on the remote
control transmitter:
0-6-2-5-9-6-Status
Do not allow the display to time out between entries while keying the sequence.
2. From the top level SAM menu, use the Menu Up/Down keys to highlight the Geometry sub menu.
3. Use the Menu Left/Right keys to enter the Geometry sub menu.
4. In the Geometry sub-menu, use the Menu Up/Down buttons to select VSC.
5. Input a crosshatch pattern to the antenna/cable input terminal.
6. Using the Menu Left/Right keys, adjust VSC so that the squares at the center of the screen are equal
in size to the squares at the top and bottom of the screen.
7. If other Geometry adjustments are needed, proceed to the necessary adjustment using the Menu
Up/Down buttons.
8. Upon completion of Geometry adjustments, press the Menu button to return to the top level SAM
menu.
Service Blanking (SBL):
Service Blanking provides a straight cutoff line in the center of the raster. It is useful when centering the
raster. It can also be used in adjusting the yoke and setting vertical size and linearity.
1. Enter the Service Alignment Mode (SAM) by pressing the following key sequence on the remote
control transmitter:
0-6-2-5-9-6-Status
Do not allow the display to time out between entries while keying the sequence.
2. From the top level SAM menu, use the Menu Up/Down keys to highlight the Geometry sub menu.
3. Use the Menu Left/Right keys to enter the Geometry sub menu.
4. In the Geometry sub-menu, use the Menu Up/Down buttons to select SBL.
5. Use the Menu Left/Right keys to toggle SBL ON or OFF.
6. With SBL on, VSH can be used to center the raster on the fiduciary marks (th e small notches in the
phosphor on the right and left edge of the CRT). These are absolute center.
7. If other Geometry adjustments are needed, proceed to the necessary adjustment using the Menu
Up/Down buttons.
8. Upon completion of Geometry adjustments, press the Menu button to return to the top level SAM
menu.
Delta HSH for 60Hz (H60):
Note: This adjustment should not be changed from the factory preset value (10).
Delta VAM for 60Hz (V60):
Note: This adjustment should not be changed from the factory preset value (5).
Audio sub menu
The audio sub menu item values are stored in EEPROM if this sub menu is left.
A sample display of the Audio sub menu is shown below.
The Audio sub menu contains the following item on stereo chassis:
Sub Menu: AUDIOValuesRemarks
ATAttack time at AVL1 – 4Normal setting is 4.
Audio Adjustment:
Attack Time at AVL (AT):
1. Enter the Service Alignment Mode (SAM) by pressing the following key sequence on the remote
control transmitter:
0-6-2-5-9-6-Status
Do not allow the display to time out between entries while keying the sequence.
2. From the top level SAM menu, use the Menu Up/Down keys to highlight the Audio sub menu.
3. Use the Menu Left/Right keys to enter the Audio sub menu.
4. Use the Menu Left/Right keys to adjust the value of AT.
5. Set the volume of AT to 4.
6. Upon completion of Audio adjustment, press the Menu button to return to the top level SAM menu.
Convergence and Purity Adjustments
Notes:
1. The following adjustments were performed with a Sencore VG91 Universal Video Generator.
2. Set the VG91 Generator as follows: STD TV Ch. 3, RF-IF Range set to HI, RF-IF Level set to
NORMAL (1), Video Pattern = Raster, R-G-B raster controls OFF, Mode Switch set to L+R, Audio
Frequency set to 300Hz, and 0 Pilot (max. CCW).
3. Connect the RF output of the generator to the Television Antenna Input, a nd adjus t the VG91 level to
remove any snow from the raster.
Pre-Convergence Procedure
Note: The degaussing procedure should be performed prior to this adjustment.
1. Place the multi-pole Purity and Convergence Assembly with the 2-Y pole purity rings directly in the
gap between the G2 and G3 (focus) grids as shown in the Convergence and Purity Assembly.
(Display the Convergence and Purity Assembly)
2. Enter Service Alignment Mode (refer to Service Alignment Mode section).
3. Apply a center cross or crosshatch pattern to the antenna/cable input terminal.
4. Select the White Tone su b-menu by pressing the Menu Up/Down keys on the remote control so that
White Tone is highlighted.
5. Use the Menu Left/Right keys to enter the White Tone sub-menu.
6. Use Menu Up/Down keys to toggle between the options. Be sure to record the values of all options
(Normal Red/Green/Blue, Delta Cool Red/Green/Blue, and Delta Warm Red/Green/Blue).
7. Use the Menu Up/Down keys to select Normal Green, and use the Menu Left key to set Normal
Green to minimum.
8. Loosen the yoke clamp screw, pull the yoke back, and remove the three yoke wedges.
9. Slide the yoke all the way forward so that it rests against the bell of the CRT.
10 Tighten the yoke clamp screw so that the yoke does not drop away from the bell of the CRT.
11. Slowly spread, and if necessary, rotate the 2-Y pole pu rity rings so that the red a nd blue lines are at
least parallel and preferably coincide at the 6:00 and 12:00 positions as shown in the following linked
graphic "2Y Spread and 2X Rotate".
12. Proceed to the Color Purity Adjustment.
(Display the Convergence and Purity Assembly)
(Display the 2Y Spread and 2X Rotate Graphic)
Color Purity Adjustment
1. Connect a solid white pattern signal to the antenna/cable input terminal.
2. Use the Menu Up/Down keys to select Normal Blue, and use the Menu Left key to set Normal Blue to
minimum.
3. Use the Menu Up/Do wn keys to select Normal Red, and us e the Menu Right key to set Normal Re d
to maximum.
4. Slowly spread the 2-X pole purity rings to center the red portion of the screen, leaving the same
amount of green on one side of the screen as blue on the other side.
5. Tighten the yoke clamp screw slightly so that the yoke may be moved with some friction.
6. Proceed to the Static Center Convergence Adjustment.
Static Center Convergence Adjustment
1. Apply a center cross or crosshatch pattern to the antenna/cable input terminal and observe the
screen to ensure that the yoke is not tilted. If necessary, rotate the yoke to obtain a level raster.
2. Use the Menu Up/Down keys to select Normal Blue, and use the Menu Right key to set Normal Blue
to maximum.
3. Slowly spread, and if necessary, rotate the 4-pole magnetic rings to converge red and blue lines at
the center of the screen.
4. Use the Menu Up/Down keys to select Normal Green, and use the Menu Right key to set Normal
Green to maximum.
7. Slowly spread, and if necessary, rotate the 6-pole magnetic rings to converge red/blue on green lines
at the center of the screen.
8. Repeat steps three and five for optimum performance.
9. Proceed to the Dynamic Edge Convergence Adjustment.
Note: To secure the correct position of the deflection yoke, three rubber wedges are used. They are
ultimately to be placed as shown in Figure 3c or Figure 4c.
1. Apply a crosshatch pattern to the antenna/cable input terminal.
2. Use the Menu Up/Down keys to select Normal Green, and use the Menu Left key to set Normal
Green to minimum.
3. Tilt the yoke up and down to converge the red and blue ve rtical lines at the 6:00 and 12:00 positions
and the red and blue horizontal lines at the 3:00 and 9:00 positions (refer to Figure 5). Wh en the
correct position has been found, place a rubber wedge b etween the yoke and the CRT. If the yoke is
tilted up, place wedge one as shown in Figure 3a; if it is tilted down, place wedge o ne as shown in
Figure 4a.
4. Tilt the yoke to the left and right to find the point of best possible convergence of the red and blue
lines at the edges, top and bottom of the scree n as shown in Figure 6. When the correct position is
located, place wedges two and three as shown in Figure 3b or Figure 4b.
5. Remove wedge one and place it in the final position as shown in Figure 3c or Figure 4c.
6. Use the Menu Up/Down keys to select Normal Green, and use the Menu Right key to set Normal
Green to maximum.
1. With the set OFF, rotate VG2 (located on the lower part of the flyback transformer) counter clockwise.
2. Use the Power Button (on the remote control or the local keyb oard) to turn the set ON, without a
signal, and rotate VG2 clockwise until snow is visible.
3. Enter Service Alignment Mode (refer to Service Alignment Mode section).
4. Enter the Virtual Customer Menu by pressing the Menu button on the remote and set brightness and
picture to 31 and color to 0.
5. Apply an NTSC color bar signal to the antenna/cable input terminal and tune to the active channel.
6. Connect an oscilloscope, 20V per division and 10 uSec time base, to pin 6 of the CRT Socket.
Observe the stairstep pattern while adjusting VG2.
Hint: Counter clockwise adjustment will compress bottom of stairstep pattern. Clockwise adjustment will
compress top of stairstep pattern.
7. Adjust VG2 midway between top and bottom compression.
8. Proceed to White-Tone Adjustments under White Tone sub-menu in the Service Alignment Mode
section to complete White Balance Setup.
Customer Service Mode (CSM)
1. The Customer Service Mode (CSM) is used to retrieve data on the TV operation settings and stored
error codes.
2. To enter the Customer Service Mode, press and hold the Mute b utton on the remote control and any
key on the local keyboard (except ”Power“) for more than 4 seconds. When the set is in Customer
Service Mode, the text "CSM" is displayed in the top right corner of the screen.
3. To use this system, the customer is instructed to enter CSM and read off the display that appears.
This information is useful to gain insights into failures before traveling to the customer's home.
4. This information can also be used to avoid nuisance trips to the home when the problem is an
operational error (example: Closed Caption is on or set is in Hospital Mode).
5. When entering CSM, all disruptive functions are turned off, and service unfriendly modes are ignore d.
While CSM is active, no changes can be made in settings or function s. When CSM is exited, the TV
returns to all prior operational settings.
6. To exit CSM, press any key (on the remote control or local keyboard) except ”Channel Up“ or
”Channel Down.“
To exit CSM and return the set to normal operation mode, press any key on the local keyboard or the
remote control except Channel Up, Channel Down, or Power.
To exit CSM and turn the set off, press the Power button on either the TV set or the remote control.
7. A sample CSM display is shown below.
Explanation of CSM Display Screen
The following information is displayed on screen:
• Text ”CSM“ on the first line
• Line number for every line (to make CSM language independent)
• To view multiple CSM pages (such as lines 8 and 9), use the Channel Up or Channel Down keys
• For more information on lines 1, 2, and 3, see SDM section ”Explanation of Display“
• Line 1 displays the run timer and the software identification, cluster, and version
• Line 2 displays the error buffer contents (the word ”error“ is not used on this screen, instead ”codes“ is
used)
• Line 3 displays the option code information
• Line 4 displays SYS: (This is not used)
• Lines 5 through 8 display information on active service unfriendly modes
• Line 5 displays the text ”NOT TUNED“ if no television station is tuned
• Line 6 displays the text ”TIMER“ if the sleep timer or ”on“ timer is active
• Line 7 displays the text ”LOCKED“ if one or more channels or presets is locked via child lock
• Line 8 displays the text ”HOSPITAL“ if hospital mode is active, or ”HOTEL“ if hotel mode is active
• If the volume limiter is active, line 9 displays the text ”VOL LIM“ and the set value of the volume limiter.
If the volume limiter is inactive, the displayed value will be 255 (the maximum volume allowed).
CSM Flow Chart
Normal operation mode
y
gs (
p
Press "MUTE" button (RC) and
an
(except "POWER") for more than 4 seconds
key on the local keyboard
Store current picture, sound and
feature settings (for later retrieval)
Set pre-defined picture, sound and
feature settings
Ignore service unfriendly options
Display CSM information screen
"Channel up"
(RC or local
keyboard)
Exit CSM
Restore picture, sound and
feature settin
stored during entry)
that were
Other key
"Channel down"
(RC or local
keyboard)
“POWER”
(RC or local
keyboard)
To next CSM pageTo previous CSM page
Off (Exit CSM):
when the set is switched on,
icture, sound and feature
settings (that were stored
during entry) are restored
Chassis to Parts Usage Matrix
(Display Part Usage Matrix)
CHASSIS FEATURE LISTINGS
(Display USA/Canadian Chissis Listings)(Display Latin American Chassis Listings)
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