Vitek AX6386R SERVICE MANUAL
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SERVICE MANUAL
MODEL: AX6386R
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MENU
CHAPTER TITLE PAGE NO.
1 ELECTRIC BLOCK DIAGRAM
1.1 MAIN BOARD 4
2 STRUCTURE DIAGRAM
2.1 MAIN UNIT 5
3 SCHEMATIC DIAGRAM
3.1 MB SECTION 6
3.2 KEY BOARD SECTION 7
3.3 CD BOARD SECTION 8
3.4 TUNER BOARD SECTION 11
4 MEASURMENT GUIDELINE AND DATA
4.1 MEASURMENT CONDITION 12
4.2 MEASURMENT DATA
4.2.1 FM SECTION 13
4.2.2 AM SECTION 14
4.2.3 CD SECTION 15
5 BOM
5.1 MAIN BOARD SECTION 17
5.2 KEY BOARD SECTION 21
5.3 CD BOARD SECTION 22
5.4 TUNER BOARD SECTION 25
5.5 OTHER SECTION 28
6 PCB DIAGRAM
6.1 MAIN BOARD
6.1.1 TOP SILKSCREEN LAYER 31
6.1.2 BOTTOM SILKSCERRN LAYER 32
6.1.3 BOTTOM SOLDER MASK LAYER 33
6.1.4 BOTTOM ROUTING LAYER 34
6.2 KEY BOARD SECTION
6.2.1 TOP SILKSCREEN LAYER 35
6.2.2 BOTTOM SILKSCERRN LAYER 36
6.2.3 TOP SOLDER MASK LAYER 37
6.2.4 BOTTOM SOLDER MASK LAYER 38
6.2.5 TOP ROUTING LAYER 39
6.2.6 BOTTOM ROUTING LAYER 40
6.3 CD SECTION
6.3.1 TOP SILKSCREEN LAYER 41
6.3.2 BOTTOM SILKSCERRN LAYER 42
6.3.3 TOP SOLDER MASK LAYER 43
6.3.4 BOTTOM SOLDER MASK LAYER 44
6.3.5 TOP ROUTING LAYER 45
6.3.6 BOTTOM ROUTING LAYER 46
6.4 TUNER SECTION
6.4.1 TOP SILKSCREEN LAYER 47
6.4.2 BOTTOM SILKSCERRN LAYER 48
6.4.3 BOTTOM SOLDER MASK LAYER 49
6.4.4 BOTTOM ROUTING LAYER 50
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1 ELECTRIC BLOCK DIAGRAM
1.1 MAIN BOARD
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2 STRUCTURE DIAGRAM
2.1 MAIN UNIT
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3 SCHEMATIC DIAGRAM
3.1 MB SECTION
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3.2 KB SECTION
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3.3 CD SECTION
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3.4 TUNER SECTION
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4. MEASURMENT GUIDELINE AND DATA
4.1 MEASURMENT CONDITION
DESCRIPTION: ETR AM/FM MP3/CD PLAYER POWER:4x25W&4X35W
Output Power: 4X35W
MEASUREMENT CONDITION:
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1.SUPPLY 14.4 V/DC
2.LOADING 4 Ω/CH
3.S.T.O. 1 W
4. dBu =EMF dBu
REVISION NO. REVISION DETAILS DATE
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4.2 MEASURMENT DATA
4.2.1 FM SECTION
(FM STEREO 1KHz 75KHz DEV. L+R=90% PILOT=10%)
ITEM UNIT NORMAL LIMIT
1 SEPARATION @1mV INPUT R>L dB 26 26 22 22
2 STEREO INDICATOR ON SENSITIVITY 98.1MHz dBu 14 ≦23
3 S/N RATIO @1mV INPUT 98.1MHz dB 45 38
4 10% T.H.D OUTPUT POWER 98.1MHz W
5 MAX. OUTPUT POWER 98.1MHz W
6 RDS ON SENSITIVITY 98.1MHz dBu 28 ≦36
V
(FM MON. 1KHz 22.5KHz DEV.)
ITEM UNIT NORMAL LIMIT
LOW MHz
FREQUENCY RANGE
1
(FREQUENCY STEP)
HIGH MHz
2 INTERMEDIATE FREQUENCY MHz 10.7 ±0.1
90.1MHz dBu
3 USABLE SENSITIVITY (S/N:30dB)
98.1MHz dBu
106.1MHz dBu
90.1MHz dBu
4 I.H.F. SENSITIVITY (75KHz DEV 3% T.H.D.)
98.1MHz dBu
106.1MHz dBu
5 -3 dB LIMITING SENSITIVITY 98.1MHz dB 10 15
6 S/N RATIO (@1mV INPUT) 98.1MHz dB 60 50
7 I. F. REJECTION 90.1MHz dB 60 50
8 IMAGE REJECTION RATIO 106.1MHz dB --- --9 AM SUPPRESSION 90.1MHz dB -- -10 AFC HOLDING RANGE (-6dB) 98.1MHz KHz --- --11 SELECTIVITY+/-200KHz (@1mV INPUT) 98.1MHz dB --- --12 FIDELITY-3dB (@1mV INPUT)
(PRE-EMPHASIS 50U/75U SEC.)
98.1MHz Hz
KHz
13 T.H.D. @REFERENCE OUTPUT (@1mV INPUT) 98.1MHz % 0.5 2
14 OVERLOAD DISTORTION (75KHz 1mV INPUT) 98.1MHz % 0.8 3
15 10% T.H.D. OUTPUT POWER (75KHz)
16 MAX. OUTPUT POWER (75KHz)
98.1MHz
W
98.1MHz
W
17 AUTO SEEK SENS.( 22.5KHz DEV) 98.1MHz dBu 20 ±8
18 LO/DX EFFECT 98.1MHz dB -- -19 DISPLAY CALIBRATION MHz
L 18 14
H 22 16
L 22 16
H 32 28
L1 ≧0.8 7 TA VOL LEVEL (VOL MIN ) 98.1MHz
H3 ≧2.5
87.5~107.9(USA) 100KHZ
87.5~108.0(EUR) 50KHZ
65~74.0(RUS) 30KHZ
15
15
15
--
---
---
100
10
22
22
22
--
---
---
125
8
L 18 14
H 22 18
L 22 18
H 32 28
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(AM MON. 1KHz 30%. MOD)
ITEM UNIT NORMAL LIMIT
FREQUENCY RANGE
1
FREQUENCY STEP
LOW KHz
530~1710(usa) 10KHZ
522~1620(eur) 9KHZ
HIGH KHz
2 INTERMEDIATE FREQUENCY KHz 450 ±3
3 MAX. SENSITIVITY
4 USABLE SENSITIVITY(S/N:20dB)
603/600KHz dBu
999/1000KHz dBu
1404/1400KHz dBu
603/600KHz dBu
999/100KHz dBu
1404/1400KHz dBu
33
33
33
36
36
36
38
38
38
42
42
42
5 S/N RATIO (@1mV INPUT) 999/1000KHz dB 45 35
6 I. F. REJECTION 603/600KHz dB 40 30
7 IMAGE REJECTION 1404/1400KHz dB 20 16
8 SELECTIVITY SENSITIVITY (+10KHz) 999/1000KHz dB -- --
9 -6dB BANDWIDTH @MAX SENSITIVITY 999/1000KHz KHz 12 15
10 AGC F.O.M.(@5mV INPUT) 999/1000KHz dB 50 40
FIDELITY-6dB
11
(@1mV INPUT)
12 T.H.D.@ REF. OUTPUT 999/1000KHz %
LOW Hz
HIGH KHz
100
2.4
125
1.8
1 3
OVERLOAD DISTORTION
13
999/1000KHz % 2.5 5
(80% MOD. @ 74dB INPUT)
14 10% T.H.D. OUTPUT POWER (5mV)
MAX. OUTPUT POWER (80% MOD @ 5mV
15
INPUT)
WHISTLE MODULATION
16
(5mV INPUT)
999/1000KHz
W
999/1000KHz
W
900KHz % 5 10
L
H 22 18
L 22 18
H
18 14
32 28
17 AUTO SEEK SENS. 999/1000KHz dBu 34 26-45
18 LO/DX EFFECT 999/1000KHz dB -- --
CLOCK SECTION
ITEM UNIT NORMAL LIMIT
1
Clock Tolerance per day (25oC±3oC)
SEC 0
<3
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CD SECTION
ITEM UNIT NOMAL LINIT
1 S/N RATIO (TCD-782) TNO.2/8 dB 60 50
TNO.9 1KHz dB 45 38 2 CHANNEL SEPARATION (TCD-782)
TNO.11 1KHz dB 45 38
3 T.H.D @REF. OUTPUT (TCD-782) TNO.2 1KHz % 0.5 2.5
L 18 14 4 10% T.H. OUTPUT POWER (TCD-782) TNO.2 1KHz W
H 22 16
L 22 18 5 MAXIMUM OUTPUT POWER (TCD-782) TNO.2 1KHz W
H 32 28
6 MAXIMUM VOLUME NOISE (TCD-782) TNO.8 mV 15 25
7 MINIMUM VOLUME NOISE (TCD-782) TNO.8 mV 2 3
8 CHANNEL BALANCE L/R (TCD-782) TNO.2 1KHz dB 0 ±2
9 FREQUENCY RESPONSE (TCD-782) TNO.15 100Hz dB
TNO.16 1KHz dB
TNO.17 10KHz dB
10 BASS/TREBALEEFFECT
100Hz
TRE
10KHz
UP dB 10 ±3 BASS
DN dB 10 ±3
UP dB 10 ±3
DN dB 10 ±3
0
0
0
±3
0
±3
100Hz dB 5 4-22 11 LOUDNESS EFFECT
(AT S.T.O –20 dB)
12 GAIN BAL. (CD:TCD-782 TNO.16 -20 dB)
(FM :22.5KHz DEV 1mV IN)
(AM:30% MOD 5mV IN)
(AUX:100mV IN)
10KHz dB -- - dB 0 ±5
dB 0 0
dB 0 ±5
dB 0 ±5
13 BACK-UP CURRENT (IGNITION OFF) mA 13.8 16
14 MIN.OPERATING VOLTAGE V 9 10
LEVEL
L 450 250 15 RCA OUT (MAX. VOL LOAD 10K Ω)
(FM :22.5KHz(35w)/75KHZ(25w) DEV 1mV )
16 SKIP TEST (PHILIPS SBC-444A)
mV
H 600 350
Interruption mm 1.0 0.8
Black dots mm 0.8 0.6
Finger prints um 75 65
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