Zenith HDR230 manuals

Zenith HDR230 Service Manual (94 pages)

Brand: Zenith | Category: Digital Video Recorders (DVR) | Size: 9.09 MB |

English

Table of contents

SERVICE MANUAL

1

SECTION 1

2

OVERVIEW

3

A.C. Voltmeter

4

SERVICING PRECAUTIONS

5

SPECIFICATIONS

6

LOCATION OF CUSTOMER CONTROLS

7

REMOTE CONTROL

8

SECTION 2

9

CABINET & MAIN CHASSIS

9

EXPLODED VIEWS

10

2. Packing Accessory Section

11

SECTION 3

12

ELECTRICAL

12

Front Board

13

1) INITIAL

18

2) POWER(SMPS) PART

19

3) SYSTEM PART

21

4) VIDEO PART

22

5) AUDIO PART

25

6) VSB PART

26

7) PVR PART

27

5. VOLTAGE MEASURED VALUE

29

2) DIODE

32

3) TRANSISTOR

33

1) RESET BLOCK DIAGRAM

35

2) POWER BLOCK DIAGRAM

36

4. WAVEFORMS

38

3-19 3-20

39

3) VIDEO [PLL] PART

40

3-23 3-24

41

6) PVR [CLOCK] PART

43

7) VSB [VSB DECODER] PART

44

8) VSB [DOWN CONVERTER] PART

45

3-33 3-34

46

1) OVERALL BLOCK DIAGRAM

48

(D125, D126, C128

49

C126, L122, C130)

49

(D121, C122

49

L121, C124)

49

3) SYSTEM BLOCK DIAGRAM

50

4) VIDEO BLOCK DIAGRAM

51

5) VIDEO PLL BLOCK DIAGRAM

52

STi4600

53

AC-3 Decoder

53

PCI I/F Signals

55

From CPU

55

7. CIRCUIT DIAGRAMS

56

2) SYSTEM CIRCUIT DIAGRAM 1

57

3) SYSTEM CIRCUIT DIAGRAM 2

58

4) SYSTEM CIRCUIT DIAGRAM 3

59

5) VIDEO CIRCUIT DIAGRAM 1

60

6) VIDEO CIRCUIT DIAGRAM 2

61

7) AUDIO CIRCUIT DIAGRAM

62

8) PVR CIRCUIT DIAGRAM 1

63

9) PVR CIRCUIT DIAGRAM 2

64

10) VSB CIRCUIT DIAGRAM

65

3-76 3-77

66

'03. 3. 15

67

13) FRONT CIRCUIT DIAGRAM

68

RIGHTLEFT

68

8. PRINTED CIRCUIT DIAGRAMS

69

3-84 3-85

70

3-86 3-87

71

LOCATION GUIDDE

72

MODEL:(A)HDR230(ZENITH)

73

.ELECTRICAL SECTION

74

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