DOWNLOAD Sony KLV-HG26M1 / KLV-SG21M1 Service Manual ↓ Size: 9.56 MB | Pages: 96 in PDF or view online for FREE

Chinese Model

P

(KLV-HG26M1)

ower Requirement:

220–240 V AC, 50 Hz

Screen Size: 26 inches

Approx. 58.7 cm measured diagonally

Display Resolution:

1,280 dots (horizontal)  768 lines (vertical)

Power Consumption:

110 W

Standby Power Consumption:

0.8 W

  or less

Dimensions (w   h   d): 

Approx. 79.0   49.0  24.0 cm
(with stand)
Approx. 79.0   43.0   13.8 cm (without stand)

Weight: 

Approx. 18.4 kg (with stand and rear cover)
Approx. 15.2  kg (without stand and rear cover)

x

x

x

P

(KLV-SG21M1)

ower Requirement:

220–240 V AC, 50 Hz

Screen Size: 21 inches

Approx. 53.7 cm measured diagonally

Display Resolution:

1,024 dots (horizontal)  768 lines (vertical)

Power Consumption:

95 W

Standby Power Consumption:

0.8 W

  or less

Dimensions (w

h   d): 

Approx. 63.0   46.0  24.2 cm
(with stand)
Approx. 63.0   40.4   12.7 cm (without stand)

Weight: 

Approx. 11.3 kg (with stand and rear cover)
Approx. 8.6 kg (without stand and rear cover)

LCD (Liquid Crystal Display) Panel

Depending on your country/region selection:

 D/K, L, I 

PAL, SECAM 
NTSC 3.58, 4.43 (only Video In)

75 ohm external terminal for VHF/UHF

VHF:

E2 –E12

UHF:

E 21–E69

CATV:

S1–S20

HYPER:

S21–S41

D/K:

R1–R12, R21–R69

I:

UH F 

B21–B69

x

x

x

x

x

x

x

x

x

x

x

KLV-HG26M1/SG21M1(CH)     2

Video input /S Video input /Audio input

Video input /S Video input /Audio input

3

Y: 1 Vp-p, 75 ohms, 0.3V negative sync
P

B

: 0.7 Vp-p, 75 ohms

P

R

: 0.7 Vp-p, 75 ohms

3

audio input (phono jacks)
500 m Vrms (100% modulation), 
Impedance: 47 kilo ohms

4

Audio input (phono jacks)

Audio output (Left/Right) (phono jacks)

Headphones jack

 

“Memory Stick” slot

Full range speaker:

4.0 W + 4.0 W

• Remote control

RM-Y1103 (1)

• Size AA batteries (R6 type) (2)
• Coaxial cable (1)
• Mains lead (Type C-6) (1)
• Mains lead (Type BF) (1)
• Rear cover (1)

• Wall-Mount Bracket SU-W210  (KLV-SG21M1), SU-LW/(KLV-HG26M1)

 

 

 

• Sleep Timer
• TV system autodetection
• Screen Memo

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/ 2

2

2

KLV-HG26M1/SG21M1(CH)     3

LEAKAGE  TEST
The AC leakage from any exposed metal part to earth ground
and from all exposed metal parts to any exposed metal part
having a return to chassis, must not exceed 0.5 mA (500
microamperes).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or

RCA WT-540A. Follow the manufacturers’ instructions to
use these instruments.

2. A battery-operated AC milliammeter. The Data Precision

245 digital multimeter is suitable for this job.

3. Measuring the voltage drop across a resistor by means of a

VOM or battery-operated AC voltmeter. The “limit” indica-
tion is 0.75 V, so analog meters must have an accurate low-
voltage scale. The Simpson 250 and Sanwa SH-63Trd are
examples of a passive VOMs that are suitable. Nearly all
battery operated digital multimeters that have a 2 V AC
range are suitable.  (See Fig. A)

After correcting the original service problem, perform the fol-
lowing safety checks before releasing the set to the customer:
1. Check the area of your repair for unsoldered or poorly-sol-

dered connections. Check the entire board surface for solder
splashes and bridges.

2. Check the interboard wiring to ensure that no wires are

“pinched” or contact high-wattage resistors.

3. Check that all control knobs, shields, covers, ground straps,

and mounting hardware have been replaced. Be absolutely
certain that you have replaced all the insulators.

4. Look for unauthorized replacement parts, particularly tran-

sistors, that were installed during a previous repair. Point
them out to the customer and recommend their replacement.

5. Look for parts which, though functioning, show obvious

signs of deterioration. Point them out to the customer and
recommend their replacement.

6. Check the line cords for cracks and abrasion. Recommend

the replacement of any such line cord to the customer.

7. Check the B+ and HV to see if they are specified values.

Make sure your instruments are accurate; be suspicious of
your HV meter if sets always have low HV.

8. Check the antenna terminals, metal trim, “metallized”

knobs, screws, and all other exposed metal parts for AC
Leakage. Check leakage as described right.

Fig. A. Using an AC voltmeter to check AC leakage.

Ω

µF

COMPONENTS IDENTIFIED BY SHADING AND MARK
!   ON THE SCHEMATIC DIAGRAMS, EXPLODED
VIEWS AND IN THE PARTS LIST ARE CRITICAL FOR
SAFE OPERATION. REPLACE THESE COMPONENTS
WITH SONY PARTS WHOSE PART NUMBERS AP-
PEAR AS SHOWN IN THIS MANUAL OR IN SUPPLE-
MENTS PUBLISHED BY SONY. CIRCUIT ADJUST-
MENTS THAT ARE CRITICAL FOR SAFE OPERATION
ARE IDENTIFIED IN THIS MANUAL. FOLLOW THESE
PROCEDURES WHENEVER CRITICAL COMPONENTS
ARE REPLACED OR IMPROPER OPERATION IS SUS-
PECTED.

KLV-HG26M1/SG21M1(CH)     4

1-1. REAR COVER AND STAND ASSY REMOVAL

1-1

1-2. REAR CABINET REMOVAL .............................. 1-1

1-3. MS AND U1 BOARDS REMOVAL ..................... 1-2

1-4. G BOARD REMOVAL ......................................... 1-2

1-5. B AND MSB BOARDS REMOVAL ..................... 1-3

1-6. A, TU AND U2 BOARDS REMOVAL ................. 1-3

1-7. H1 AND MSX BOARDS REMOVAL ................... 1-4

1-8. H2 BOARD REMOVAL ....................................... 1-4

1-9. D2 BOARD REMOVAL ....................................... 1-5

1-10. H3 BOARD REMOVAL ..................................... 1-5

2-1. Adjustment of signal level ................................... 2-1

2-1-1. Check AD calibration registration items ...... 2-1

2-1-2. Y signal AD calibration of TV/VIDEO input . 2-1

2-1-3. C signal AD calibration of TV/VIDEO input . 2-1

2-1-4. Y signal AD calibration of COMPONENT input . 2-2

2-1-5. C signal AD calibration of COMPONENT input . 2-2

2-2. White Balance Adjustment

2-2-1. White Balance of color temperature “warm”

2-3

2-2-2. White Balance Adjustment of color

temperature  “normal” .................................. 2-3

2-2-3. White Balance Adjustment of color

temperature “cool” ....................................... 2-3

3-1. BLOCK DIAGRAMS ........................................... 3-1

3-2. FRAME DIAGRAM ............................................. 3-8

3-3. CIRCUIT BOARDS LOCATION ......................... 3-9

3-4. SCHEMATIC  DIAGRAMS  AND  PRINTED

WIRING  BOARDS ............................................. 3-9

(1) Schematic Diagrams of A Board ................... 3-10

(2) Schematic Diagrams of B Board ................... 3-17

(3) Schematic Diagram of H1 and H2 Boards .... 3-25

(4) Schematic Diagram of H3 and U1 Boards .... 3-26

(5) Schematic Diagram of U2 Board .................. 3-27

(6) Schematic Diagram of D2 Board .................. 3-28

(7) Schematic Diagrams of MS Board ................ 3-30

(8) Schematic Diagram of MSB and MSX Boards . 3-34

(9) Schematic Diagram of TU Board .................. 3-35

(10) Schematic Diagram of G Board .................. 3-36

3-5. SEMICONDUCTORS ......................................... 3-38

4-1. CABINET ASSY AND STAND ASSY ................. 4-2

4-2. CHASSIS ............................................................ 4-3

4-3. PACKING MATERIALS ...................................... 4-4