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documentação da tv samsung 245gwerda
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**1. Precaution
Speaker HT-Z Front PS-FZ Center PS-CZ Rear PS-RZ Subwoofer PS-WZ
This Service Manual is a property of Samsung Electronics Co.,Ltd. Any unauthorized use of Manual can be punished under applicable International and/or domestic law.
Area Web Site
North America service.samsungportal.com
Latin America latin.samsungportal.com
CIS cis.samsungportal.com
Europe europe.samsungportal.com
China china.samsungportal.com
Asia asia.samsungportal.com
Mideast & Africa mea.samsungportal.com
© Samsung Electronics Co.,Ltd. Mar. 2008 Printed in Korea
Contents
7-8 HDMI 7-
Samsung Electronics 1-
Precaution
1. Precaution
Follow these safety, servicing and ESD precautions to prevent damage and protect against potential hazards such as electrical shock and X-rays.
1-1 Safety Precautions
With the unit completely reassembled, plug the AC line cord directly into a 120V AC outlet. With the unit’s AC switch first in the ON position and then OFF, measure the current between a known earth ground (metal water pipe, etc.) and all exposed metal parts. Examples: Handle brackets, metal cabinets, screwheads and control shafts. The current measured should not exceed 0. milliamp. Reverse the powerplug prongs in the AC outlet and repeat.
If any of the exposed metallic parts has a return path to the chassis, the measured resistance should be between 1 and 5.2 megohms. If there is no return path, the measured resistance should be “infinite.” If the resistance is outside these limits, a shock hazard might exist. See Fig. 1-
DEVICE UNDER TEST
LEAKAGE CURRENT TESTER TEST ALL EXPOSED METAL SURFACES 2-WIRE CORD ALSO TEST WITH PLUG REVERSED (USING AC ADAPTER PLUG AS REQUIRED)
EARTH GROUND
(READING SHOULD NOT BE ABOVE 0.5mA)
<Fig. 1-1 AC Leakage Test>
Antenna Terminal
ohm
<Fig. 1-2 Insulation Resistance Test>
Exposed Metal Part
Ohmmeter
Samsung Electronics 1-
Precaution
1-2 Servicing Precautions
The insulation resistance between each blade of the AC plug and accessible conductive parts (see above) should be greater than 1 megohm.
First read the “Safety Precautions” section of this manual. If some unforeseen circumstance creates a conflict between the servicing and safety precautions, always follow the safety precautions.
1-4 Samsung Electronics
Precaution
1-3 Precautions for Electrostatically Sensitive Devices (ESDs)
2-2 Samsung Electronics
Product Specification
2-2 Specifications
Model Name HT-Z
General
Power Requirements AC 220V, 50Hz Power Consumption 80 W Weight 3.5 kg Dimensions 430 (W) x 65 (H) x 352 (D) mm Operating Temperature Range +5°C ~ +35°C Operating Humidity Range 10 % to 75 %
Disc
DVD (Digital Versatile Disc)
Reading Speed: 3.49 ~ 4.06 m/sec. Approx. Play Time (Single Sided, Single Layer Disc): 135 min.
CD: 12 cm (COMPACT DISC)
Reading Speed: 4.8 ~ 5.6 m/sec. Maximum Play Time: 74 min.
CD: 8cm (COMPACT DISC)
Reading Speed: 4.8 ~ 5.6 m/sec. Maximum Play Time: 20 min.
Video Output
Composite Video
576i 1 channel: 1.0 Vp-p (75 Ω load)
Component Video
576i/480i Y: 1.0 Vp-p (75 load) Pr: 0.70 Vp-p (75 Ω load) Pb: 0.70 Vp-p (75 Ω load) Video/ Audio
HDMI 1080p, 1080i, 720p, 480p
Amplifier
Front speaker output 133W x 2 (3Ω) Center speaker output 133W (3Ω) Rear speaker output 133W x 2 (3Ω) Subwoofer speaker output 133W (3Ω) Frequency range 20Hz ~ 20KHz S/N Ratio 70dB Channel separation 60dB Input sensitivity (AUX) 400mV
Samsung Electronics 2-
Product Specification
Speaker
Speaker system
5.1ch speaker system Front/Rear, Center Subwoofer Impedance 3Ω 3Ω Frequency range 140Hz ~ 20KHz 45Hz ~ 160Hz Output sound pressure level 86dB/W/M 86dB/W/M Rated input 133W 133W Maximum input 266W 266W
Dimensions (W x H x D)
Front/Rear: 90 x 118 x 90 mm Center: 250 x 91 x 90 mm Subwoofer: 180 x 320 x 380 mm
Weights
Front: 0.5 kg Center: 0.6 kg Rear: 0.4 kg Subwoofer : 4.5 kg
Samsung Electronics 2-
Product Specification
Model Name HT-Z210^ HT-TX
Photo
Video Inputs
Component X X Composite X X S-Video X X HDMI In X X
Video Outputs
Component (^) Composite HDMI Out (1080P) (1080P) S-Video X X SCART Out X X
Audio in/out
In AUX1 AUX Line In AUX2 AUX Multi ch Out X X Out X X Optical jack
In (Digital In) (^) (1) (2) Out X X Coaxial jack In^ X^ X Out X X i-Link X X Headphone/ MIC Jack
Headphone Jack (3.5Φ) (^) (*1) X 2 MIC Jack (6.5Φ) (Wireless MIC, CIS Only)
Tuner
FM RDS X (^) (EU Only) AM X X Preset Memory 15 15 Remote Key Universal Key (MBR)^ 57 Key^ 60 Key Dual Voltage HIGH, LOW, DUAL Voltage HIGH, LOW, DUAL Voltage
Speaker
Type (Sat/Tallboy) Satellite Tallboy Stand (^) Impedance (Sat/Woofer) 3Ω/3Ω 3Ω/3Ω Active (Powered) S/W X X Net Weight(Kg) Set^5
: application, X: non-application
2-6 Samsung Electronics
Product Specification
2-4 Accessories
2-4-1 Supplied Accessories
Accessories Item Item code Remark
Remote Control Batteries
Samsung Service center
HDMI Cable AH39-00721A
Video Cable AH39-40001V
FM Antenna AH42-00021A
Owner’s Instructions AH68-02055L
Cloth Clean AH81-02286C
3-2 Samsung Electronics
Disassembly & Reassembly
No. Part Name Description Description Photo
2 MECHA 1) Remove the mecha. Remove the 4 screws and wire. : TAP TITE SCREW BH 3*25 SILVER
In case of pulling up the PCB cable, it is easier to pull up when pressing the grip.
4 PCB 1) Remove the wires between PCBs.
In case of pulling up the PCB cable, it is easier to pull up when pressing the grip.
Samsung Electronics 3-
Disassembly & Reassembly
No. Part Name Description Description Photo
5 CABINET- BOTTOM REAR
6 Set 1) Picture of a disassembled product.
Samsung Electronics 4-
Troubleshooting
4. Troubleshooting
4-1 Checkpoints by Error Mode ................................................................4-
4-2 Measures to be taken when the Protection Circuit operates ...........4-
4-3 Initialization & Upgrade Methods........................................................4-
4-2 Samsung Electronics
Troubleshooting
4-1 Checkpoints by Error Mode
4-1-1 Power Failure
UIC1 Main PCB; pin 14, 40, 55, 89 5V?
Yes
Yes
Check for POWER-SENSE (5V) at Main PCB : pin 22 of UIC1, 5V?
POWER PCB (SMPS) C73 (+) CHECK → 5V?
Check NORMAL VOLTAGE at SMPS PCB : D
Replace CON3 wire
Check pattern from MCON to pin 22 of UIC
Check for circuit at SMPS PCB; ICM01, Fuse (F1), D81, T1, T
Replace D51. Check Resistance from GND to pin 22 of MICOM (UIC1). If short (0 ohm), Replace MICOM (UIC1)
No
No
Yes
No
Yes
No
The power does not turn on.
When POWER ON for Front PCB, Check for HIGH voltage (5V) at UIC2; pin 13, 43
Replace the VFD DRIVER IC (ZIC1).
No
Yes
A
