Shivaki STV-32LED13 User manual

STV-32LED13/STV-32LED13W)
STV-40LED13/ STV-40LED13W)
Service Manual

１
Contents
1. Safety precautions
2. Technical specifications, characteristics and functions
3. LCD structural diagram
4. Description of major components of LCD
5. Failure analysis
6. Simple adjustment
7. List of assemblies

２
I. Safety precautions
▲ It is strictly prohibited to place this unit in open air or damp places in order not to
cause internal short-circuit firing or electroshock risk.
▲ It is strictly prohibited to place this unit on an unstable cart, ramp or table to
prevent this unit from dropping, which may cause injury of human being.
▲ High voltage exists in the unit. Only the professional staff familiar to the service
manual and board conditions of this unit can open the enclosure for repair.
Note: This service manual should be read and used by the professional
staff only. Prior to any repair work, the inspectors must read the safety
precautions in this manual.
This symbol indicates:
High voltage danger.
Protect against
electroshock.
This symbol indicates: Safety
components in the equipment
cannot be replaced at will
during the service.

３
General rules:
1. Before the rear cover is opened for repair, the unit must be placed horizontally on
a soft surface with no static charges.
2. Before the chassis are repaired (with power on), a 1:1 isolation transformer should
be connected between the AC power supply and this unit.
3. Prior to the repair, inspect the parts in the high-voltage circuits and the initial
connection of the circuits. Any connectors or elements damaged due to the short
circuit should be replaced.
4. Considering the safety of the product, any replacement parts should be within the
scope of the technical specifications indicated in the service manual. Only the
printed circuit board diagram numbers designated in the service manual can be
used as replacement.
5. After the repair, all the protection components should be checked for correct
installation, and the initial connection mode should be confirmed.
6. Before the cover is closed, check that there are no loose parts in the unit.
7. After the repair, perform the following inspections of withstand voltage and
insulance to avoid electroshock.
Method of inspections:
Pull out the AC power cable for connecting the power supply and the
connection receptacle of this unit.
Switch on the power switch of the TV. Connect ZHZ4B withstand voltage and
insulance testing set and the PDP TV as shown in the following diagram:
Set the insulation at 4MΩ/500V. Set the time as 4 seconds. Set the reading of
withstand voltage as 1.5KV. Set the leakage current as 5mA. And set the time
as 1 minute. No alarming signals should appear in the testing set during the
above testings.

４
II. Technical performance
STV-32LED13/STV-40LED13 is a high-definition color TV receiver that
integrates modern electronic technology, communication technology, information
processing technology and high-speed numeric picture processing technology.
(I) technical specifications:
Type STV-32LED13/STV-40LED13
Broadcasting signal
system
PAL /SECAM DVB-T/T2 DVB-S/S2
Video signal system Video PAL/NTSC/SECAM
Stored program ATV 99 ；DTV 1200 (DVB-T+ DVB-C dynamic )
5000 (DVB-S/S2 dynamic )
Radio frequency RF input impedance: 75Ω
Video frequency VIDEO input impedance:75Ωinput voltage:1Vp-p±10%
RGB input impedance:75Ωinput voltage Y:0.7Vp-p±3db
YPrPb input impedance:75Ωinput voltage Y:0.7Vp-p±3db
Audio input voltage:0.2-2Vrms
Audio output
(speaker)
2×8W (impedance 8Ω)
Power supply 100V~240V~ 50/60Hz
Standby power
consumption
0.5W
Aspect ratio 16:9
Operating temperature 0~40℃
Relative humidity ≤80%
(II) Technical characteristics
1. high-definition
2. high contract
3. high brightness
4. Multiple input mode display
5. Point-to-point display with no flickering
6. High-resolution computer interface, the largest support 1366*768
resolution module
7. Super-thin type appearance design
8. Infrared remote control
9. Open-type function menu