Adjustment; How To Access Service Mode - Samsung T23A750 Service Manual

4. Troubleshooting

4-5. Adjustment

4-5-1. Service Instruction
1. Usually, a color TV-VCR needs only slight touch-up adjustment upon installation.
Check the basic characteristics such as height, horizontal and vertical sync.
2. Use the specified test equipment or its equivalent.
3. Correct impedance matching is essential.
4. Avoid overload. Excessive signal from a sweep generator might overload the front-end of the TV. When inserting signal
markers, do not allow the marker generator to distort test result.
5. Connect the TV only to an AC power source with voltage and frequency as specified on the backcover nameplate.
6. Do not attempt to connect or disconnect any wire while the TV is turned on. Make sure that the power cord is
disconnected before replacing any parts.
7. To protect aganist shock hazard, use an isolation transform.

4-6. How to Access Service Mode

4-6-1. Entering Factory Mode
To enter "Service Mode" Press the remote -control keys in this sequence :
If you do not have Factory remote - control
ሪ
[For Europe & Australia, New Zealand, Singapore]
If you have Factory remote - control
ሪ
Key Functions
- Channel ∧∨,▲ ▼ Key : Select an option.
- Volume ＋－,◀▶ Key : Increase or decrease the value for an option.
- Menu key: Save the current settings to EEPROM and return to the previous mode.
- Number (0 ~ 9) keys: Change the channel.
- TV/AV key: Switch to AV mode.
4-6-2. Factory specifications
* When you have replaced the main board, change the settings according to the following factory specifications. Note
that the "Type" setting must be changed.
Model Name
Panel
1 Factory Reset
2
3 Local set
4
5
6 Ch Table
7 Front Color
4-14
Vendor
CODE
Type
Model
TUNER
T23A750
AMLCD
BN07-01011A
-
23A1TF0E
All
TA750
-
-
U-T-BL-M
T27A750
AMLCD
BN07-01013A
-
27A1TF0E
All
TA750
-
-
U-T-BL-M