Toshiba 20WL56 TFT LCD TV – how to enter service mode, adjustments – used Vestel kit
SERVICE MENU SETTINGS
All system, geometry and white balance alignments are performed in production service mode. Before starting the production mode alignments, make sure that all manual adjustments are done correctly. To start production mode alignments enter the main menu by pressing “MENU” button and then press the digits 4, 7, 2 and 5 buttons respectively.
After entering the Service menu, you can access its items by pressing “▲/▼” buttons. In order to enter selected menu, use “◄/►” buttons. To exit the service menu press “MENU” button.
All system, geometry and white balance alignments are performed in production service mode. Before starting the production mode alignments, make sure that all manual adjustments are done correctly. To start production mode alignments enter the main menu by pressing “MENU” button and then press the digits 4, 7, 2 and 5 buttons respectively.
After entering the Service menu, you can access its items by pressing “▲/▼” buttons. In order to enter selected menu, use “◄/►” buttons. To exit the service menu press “MENU” button.
OPTIONS MENU SETTINGS
In order to enter Options menu, move the cursor to Options… parameter by pressing “▲/▼” buttons in Service Menu and press “◄/►” button.
There are 50 items in the OPTIONS menu, but 11 of them are seen when you first enter the menu. Using “▲/▼” buttons remaining items can be seen.In order to enter Options menu, move the cursor to Options… parameter by pressing “▲/▼” buttons in Service Menu and press “◄/►” button.
Hue On/Off
Enables / disables Hue option in Picture menu.
First APS | On/Off |
If ON, TV starts with APS menu at Start-up. | |
A.P.S On/Off | |
Enables / disables Automatic Programming System. | |
Headphone On/Off | |
Enables / disables the usage of the HP and HP related items in sound menu. | |
VSR On/Off | |
Enables / disables VSR (Virtual surround). |
DBE On/Off |
Enables / disables DBE (Dynamic Bass Enhancement). |
Subwoofer On/Off - Enables / disables Subwoofer.
Lineout On/Off - Enables / disables Lineout.
DolbyPro On/Off- Enables / disables Dolby prologic system.
Equalizer On/Off - Enables / disables equalizer system.
BG On/Off- Enables / disables BG Standard.
DK On/Off
Enables / disables DK Standard.
I On/Off
Enables / disables I Standard.
L On/Off
Enables / disables L Standard.
L’ On/Off
Enables / disables L’ Standard.
AUS On/Off
Enables / disables AUS Standard.
NZ On/Off
Enables / disables NZ Standard.
NM On/Off
Enables / disables NM Standard.
FM Prs Avl On
Adjusts the FM Prescaler value, when Automatic Volume Levelling is On
Min. Value: 0000 00000
Max. Value: 00FF 00255
I On/Off
Enables / disables I Standard.
L On/Off
Enables / disables L Standard.
L’ On/Off
Enables / disables L’ Standard.
AUS On/Off
Enables / disables AUS Standard.
NZ On/Off
Enables / disables NZ Standard.
NM On/Off
Enables / disables NM Standard.
FM Prs Avl On
Adjusts the FM Prescaler value, when Automatic Volume Levelling is On
Min. Value: 0000 00000
Max. Value: 00FF 00255
Nicam Prs Avl On
Adjusts the Nicam Prescaler value, when Automatic Volume Levelling is On
Min. Value: 0000 00000
Max. Value: 00FF 00255
Scart Prs Avl On
Adjusts the Scart Prescaler value, when Automatic Volume Levelling is On
Min. Value: 0000 00000
Max. Value: 00FF 00255
Scart Volume Avl On
Adjusts the Scart Volume value, when Automatic Volume Levelling is On
Min. Value: 0000 00000
Max. Value: 00FF 00255
Adjusts the Nicam Prescaler value, when Automatic Volume Levelling is On
Min. Value: 0000 00000
Max. Value: 00FF 00255
Scart Prs Avl On
Adjusts the Scart Prescaler value, when Automatic Volume Levelling is On
Min. Value: 0000 00000
Max. Value: 00FF 00255
Scart Volume Avl On
Adjusts the Scart Volume value, when Automatic Volume Levelling is On
Min. Value: 0000 00000
Max. Value: 00FF 00255
FM Prs Avl Off
Adjusts the FM Prescaler value, when Automatic Volume Levelling is Off
Min. Value: 0000 00000
Max. Value: 00FF 00255
Nicam Prs Avl Off
Adjusts the Nicam Prescaler value, when Automatic Volume Levelling is Off
Min. Value: 0000 00000
Max. Value: 00FF 00255
Scart Prs Avl Off
Adjusts the Scart Prescaler value, when Automatic Volume Levelling is Off
Min. Value: 0000 00000
Max. Value: 00FF 00255
Scart Volume Avl Off
Adjusts the Scart Volume value, when Automatic Volume Levelling is Off
Min. Value: 0000 00000
Max. Value: 00FF 00255
Hotel VoD | On/Off |
Enables / disables Hotel Video-on-Demand. | |
AVL On/Off | |
Enables / disables Automatic Volume Levelling System. |
Top Text On/Off
Enables / disables TopText.
Fast Text | On/Off |
Enables / disables FastText. |
TXT Language
Switches between Teletext Language Groups.
Min. Value: 0000 00000
Max. Value: 0004 00004
IF Frequency
Adjusts the IF Frequency.
Min. Value: 0000 00000
Max. Value: 00FF 00255
Sound On/Off
Enables / disables Sound.
Carrier On/Off
Enables / disables sound Carrier feature.
RC_Options On/Off
Enables / disables Remote control usage for Service menu.
AV-1 On/Off
Enables / disables AV-1.
AV-2 On/Off
Enables / disables AV-2.
S-Video On/Off
Enables / disables S-Video.
YPbPr On/Off
Enables / disables YPbPr.
Enables / disables sound Carrier feature.
RC_Options On/Off
Enables / disables Remote control usage for Service menu.
AV-1 On/Off
Enables / disables AV-1.
AV-2 On/Off
Enables / disables AV-2.
S-Video On/Off
Enables / disables S-Video.
YPbPr On/Off
Enables / disables YPbPr.
PC RGB | On/Off |
Enables / disables PC. | |
MENU On/Off | |
Enables / disables semi-transparent MENU. | |
MIX | |
Enables / disables teletext MIX mode. |
Enable: 00000001
Disable: 00000000
Hotel Mode On/Off
Enables / disables Hotel mode.
LDLY
Adjusts the Luna / chroma DeLaY value.
Min. Value: 0000 00000
Max. Value: 0007 00007
Disable: 00000000
Hotel Mode On/Off
Enables / disables Hotel mode.
LDLY
Adjusts the Luna / chroma DeLaY value.
Min. Value: 0000 00000
Max. Value: 0007 00007
AGC
Adjusts the Automatic Gain Control value.
Min. Value: 0000 00000
Max. Value: 001F 00031
PIP On/Off
Enables / disables PIP (Picture-In-Picture).
PAP On/Off
Enables / disables PAP (Picture-And-Picture).
Full PC RGB On/Off
Enables / disables PC standby feature.
PC RGB AUDIO On/Off
Enables / disables PC Audio.
Other
Enables / disables search mode for DK Standard.
Enable: 00000001
Disable: 00000000
APS WSS TEST MENU
In order to enter Aps Wss Test menu, move the cursor to Aps Wss Test parameter by pressing “▲/▼”
buttons in Service Menu and press “◄/►” button. The following menu appears on the screen.
There are 6 items in the Aps Wss Test menu.
Programme
VPS
Pdc Format 1
Pdc Format 2
Name
Wss
TUNER
As the thickness of the TV set has a limit, a horizontal mounted tuner is used in the product, which is suitable for CCIR systems B/G, H, L/ L’, I/I’, and D/K. The tuning is available through the digitally controlled I2C bus (PLL). Below you will find info on the Tuner in use.
General description of UV1316
The UV1316 tuner belongs to the UV 1300 family of tuners, which are designed to meet a wide range of applications. It is a combined VHF, UHF tuner suitable for CCIR systems B/G, H, L, L’, I and I’. The low IF output impedance has been designed for direct drive of a wide variety of SAW filters with sufficient suppression of triple transient.
Features of UV1316
1. Member of the UV1300 family small sized UHF/VHF tuners
2. Systems CCIR: B/G, H, L, L’, I and I’; OIRT: D/K
3. Digitally controlled (PLL) tuning via I2C-bus
4. Off-air channels, S-cable channels and Hyper band
5. Compact size
6. Complies to “CENELEC EN55020” and “EN55013”
Pinning
1. Gain control voltage (AGC) : 4.0V, Max: 4.5V
2. Tuning voltage
3. I²C-bus address select : Max: 5.5V
4. I²C-bus serial clock : Min:-0.3V, Max: 5.5V
5. I²C-bus serial data : Min:-0.3V, Max: 5.5V
6. Not connected
7. PLL supply voltage : 5.0V, Min: 4.75V, Max: 5.5V
8. ADC input
9. Tuner supply voltage : 33V, Min: 30V, Max: 35V
10. Symmetrical IF output 1
11. Symmetrical IF output 2