Sony HCD-DR7AV / HCD-XB800AV / LBT-DR7AVS Service Manual ▷ View online
– 4 –
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT
OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic
break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission, ob-
serve from more than 30 cm away from the objective lens.
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission, ob-
serve from more than 30 cm away from the objective lens.
LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
CHECK
Carry out the “S curve check” in “CD section adjustment” and check
that the S curve waveform is output four times.
that the S curve waveform is output four times.
SECTION 1
SERVICING NOTE
About CD-TEXT display
This unit is provided with a simple CD-TEXT display function.
The CD-TEXT contents of 20 tracks are displayed on the fluores-
cent display tube.
Since the function is simple, some special characters may not be
displayed, or may be displayed as other characters.
The CD-TEXT contents of 20 tracks are displayed on the fluores-
cent display tube.
Since the function is simple, some special characters may not be
displayed, or may be displayed as other characters.
– 5 –
TABLE OF CONTENTS
7-15. Printed Wiring Board – Power Section –
(DR7AV model) ................................................................ 61
7-16. Schematic Diagram – Power (1/2) Section –
(XB800AV model) ............................................................ 63
7-17. Schematic Diagram – Power (2/2) Section –
(XB800AV model) ............................................................ 65
7-18. Printed Wiring Board – Power Section –
(XB800AV model) ............................................................ 67
7-19. Schematic Diagram – Panel FL Section – ........................ 69
7-20. Printed Wiring Board – Panel FL Section – ..................... 71
7-21. Schematic Diagram – Panel VR Section – ....................... 73
7-22. Printed Wiring Board – Panel VR Section – .................... 75
7-23. Schematic Diagram – TC Panel Section – ....................... 77
7-24. Printed Wiring Board – TC Panel Section – ..................... 79
7-25. Schematic Diagram – CD Panel Section – ....................... 81
7-26. Printed Wiring Board – CD Panel Section – .................... 83
7-27. Schematic Diagram – CD Motor Section – ...................... 85
7-28. Printed Wiring Board – CD Motor Section – ................... 87
7-29. Schematic Diagram – Jack Section – ............................... 89
7-30. Printed Wiring Board – Jack Section – ............................ 91
7-31. Schematic Diagram – Trans Section –
7-20. Printed Wiring Board – Panel FL Section – ..................... 71
7-21. Schematic Diagram – Panel VR Section – ....................... 73
7-22. Printed Wiring Board – Panel VR Section – .................... 75
7-23. Schematic Diagram – TC Panel Section – ....................... 77
7-24. Printed Wiring Board – TC Panel Section – ..................... 79
7-25. Schematic Diagram – CD Panel Section – ....................... 81
7-26. Printed Wiring Board – CD Panel Section – .................... 83
7-27. Schematic Diagram – CD Motor Section – ...................... 85
7-28. Printed Wiring Board – CD Motor Section – ................... 87
7-29. Schematic Diagram – Jack Section – ............................... 89
7-30. Printed Wiring Board – Jack Section – ............................ 91
7-31. Schematic Diagram – Trans Section –
(XB800AV model) ............................................................ 93
7-32. Printed Wiring Board – Trans Section –
(XB800AV model) ............................................................ 95
7-33. Schematic Diagram – Trans Section –
(DR7AV model) ................................................................ 97
7-34. Printed Wiring Board – Trans Section –
(DR7AV model) ................................................................ 99
7-35. Schematic Diagram – Leaf SW Section – ...................... 100
7-36. Printed Wiring Board – Leaf SW Section – ................... 100
7-37. Schematic Diagram – Surround Section – ..................... 101
7-38. Printed Wiring Board – Surround Section – ................... 101
7-39. IC Block Diagrams ......................................................... 103
7-40. IC Pin Functions ............................................................. 104
7-36. Printed Wiring Board – Leaf SW Section – ................... 100
7-37. Schematic Diagram – Surround Section – ..................... 101
7-38. Printed Wiring Board – Surround Section – ................... 101
7-39. IC Block Diagrams ......................................................... 103
7-40. IC Pin Functions ............................................................. 104
8. EXPLODED VIEWS
8-1. Case and Back Panel Section ............................................ 107
8-2. Front Panel Section 1 ........................................................ 108
8-3. Front Panel Section 2 ........................................................ 109
8-4. Chassis Section ................................................................. 110
8-5. TC Mechanism Section 1 (TCM230AWR2/230PWR2) ... 111
8-6. TC Mechanism Section 2 (TCM230AWR2/230PWR2) ... 112
8-7. CD Mechanism Section (CDM37M-5BD32L) ................. 113
8-8. Base Unit Section (BU-5BD32L) ..................................... 114
8-2. Front Panel Section 1 ........................................................ 108
8-3. Front Panel Section 2 ........................................................ 109
8-4. Chassis Section ................................................................. 110
8-5. TC Mechanism Section 1 (TCM230AWR2/230PWR2) ... 111
8-6. TC Mechanism Section 2 (TCM230AWR2/230PWR2) ... 112
8-7. CD Mechanism Section (CDM37M-5BD32L) ................. 113
8-8. Base Unit Section (BU-5BD32L) ..................................... 114
9. ELECTRICAL PARTS LIST
...................................... 115
1. SERVICING NOTE
.......................................................... 4
2. GENERAL
....................................................................
6
3. DISASSEMBLY
3-1. Front Panel ............................................................................ 8
3-2. Main Board ........................................................................... 8
3-3. Sub Panel .............................................................................. 9
3-4. CD-L/CD-R Board and CD Lid Assembly ........................... 9
3-5. Tape Mechanism Deck and Cassette Lid ............................ 10
3-6. CD Mechanism Deck .......................................................... 10
3-7. Base Unit ............................................................................. 10
3-8. Disc Table ........................................................................... 11
3-2. Main Board ........................................................................... 8
3-3. Sub Panel .............................................................................. 9
3-4. CD-L/CD-R Board and CD Lid Assembly ........................... 9
3-5. Tape Mechanism Deck and Cassette Lid ............................ 10
3-6. CD Mechanism Deck .......................................................... 10
3-7. Base Unit ............................................................................. 10
3-8. Disc Table ........................................................................... 11
4. SERVICE MODE
............................................................ 12
5. MECHANICAL ADJUSTMENTS
..........................
16
6. ELECTRICAL ADJUSTMENTS
............................... 16
7. DIAGRAMS
7-1. Circuit Boards Location ...................................................... 19
7-2. Block Diagrams
7-2. Block Diagrams
• BD (CD) Section .............................................................. 21
• Deck Section .................................................................... 23
• Main (1/2) Section ........................................................... 25
• Main (2/2) Section ........................................................... 27
• Power Section (DR7AV model) ....................................... 29
• Power Section (XB800AV model) ................................... 31
• Display Section ................................................................ 33
• Deck Section .................................................................... 23
• Main (1/2) Section ........................................................... 25
• Main (2/2) Section ........................................................... 27
• Power Section (DR7AV model) ....................................... 29
• Power Section (XB800AV model) ................................... 31
• Display Section ................................................................ 33
7-3. Printed Wiring Board – BD (CD) Section – ....................... 37
7-4. Schematic Diagram – BD (CD) Section – .......................... 39
7-5. Printed Wiring Board – Main Section – .............................. 41
7-6. Schematic Diagram – Main (1/5) Section – ........................ 43
7-7. Schematic Diagram – Main (2/5) Section – ........................ 45
7-8. Schematic Diagram – Main (3/5) Section – ........................ 47
7-9. Schematic Diagram – Main (4/5) Section – ........................ 49
7-10. Schematic Diagram – Main (5/5) Section – ..................... 51
7-11. Schematic Diagram – Deck Section – .............................. 53
7-12. Printed Wiring Board – Deck Section – ........................... 55
7-13. Schematic Diagram – Power (1/2) Section –
7-4. Schematic Diagram – BD (CD) Section – .......................... 39
7-5. Printed Wiring Board – Main Section – .............................. 41
7-6. Schematic Diagram – Main (1/5) Section – ........................ 43
7-7. Schematic Diagram – Main (2/5) Section – ........................ 45
7-8. Schematic Diagram – Main (3/5) Section – ........................ 47
7-9. Schematic Diagram – Main (4/5) Section – ........................ 49
7-10. Schematic Diagram – Main (5/5) Section – ..................... 51
7-11. Schematic Diagram – Deck Section – .............................. 53
7-12. Printed Wiring Board – Deck Section – ........................... 55
7-13. Schematic Diagram – Power (1/2) Section –
(DR7AV model) ................................................................ 57
7-14. Schematic Diagram – Power (2/2) Section –
(DR7AV model) ................................................................ 59
– 6 –
SECTION 2
GENERAL
Front Panel
2
3
4
1
53
54
31 32
7
9
10
11
12
13 14 15 16 17
18
19
20
21
22
23
24
24
25
26
8
27
5
6
30
29
28
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
41
42
43
44
45
46
47
48
49
50
51
52
40
35
36
36
38
39
37
33 34
71
– 7 –
LOCATION OF PARTS AND CONTROLS
1
1/u (Power) button and indicator
2
DEMO (STANDBY) button (DR7AV)
POWER SAVE/DEMO (STANDBY)
button (XB800AV)
POWER SAVE/DEMO (STANDBY)
button (XB800AV)
3
DISPLAY button
4
SPECTRUM ANALYZER button
5
Display window
6
GEQ control button
7
SYNC BASS button
8
SYNC EQ button
9
Remote sensor
10
PTY button (XB800AV)
11
TUNING MODE button
12
STEREO/MONO button
13
ENTER/NEXT button and indicator
14
TUNER MEMORY button
15
TUNER/BAND button
16
TUNING - button
17
TUNING + button
18
FUNCTION button
19
VOLUME knob
20
PHONES jack
21
MIC LEVEL knob
22
MIX MIC jack
23
GROOVE button and indicator
24
SUPER WOOFER button and indicator
25
MODE button
26
ª (B Deck) button and indicator
27
· (B Deck) button and indicator
28
p (B Deck) button
29
0 (B Deck) button
30
) (B Deck) button
31
P (B Deck) button
32
r REC (B Deck) button
33
HI-SPEED DUB button
34
CD SYNCHRO button
35
PLAY MODE button
36
REPEAT button
37
0 (CD) button
38
) (CD) button
39
·P (CD) button and indicator
40
p (CD) button
41
DISK SKIP button
42
= AMS + knob
43
VIDEO2 INPUT jacks
44
PRO LOGIC button and indicator
45
EDIT button
46
NON-STOP button and indicator
47
LOOP button
48
FLASH button
49
DISC 5 button
50
DISC 4 button
51
DISC 3 button
52
DISC 2 button
53
DISC 1 button
54
DOLBY NR button
55
DIRECTION button
56
) (A Deck) button
57
0 (A Deck) button
58
p (A Deck) button
59
· (A Deck) button
60
ª (A Deck) button
61
KARAOKE PON/MPX button
62
DSP button and indicator
63
EFFECT button and indicator
64
ENTER button and indicator
65
GEQ CONTROL button
66
P. FILE MEMORY
67
Equalizer indicators
68
t/CLOCK SET button
69
SLEEP button
70
REC button and indicator
71
DAILY button and indicator
• AMS is the abbreviation for Automatic
Music Sensor.
This section is extracted from
instruction manual.
instruction manual.
