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.

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.

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

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

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.

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

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