Samson XP308i User manual

MODEL NO.: XP308I
Contents
Specification 1-2
Block Diagram 3
Packing View 4
Packing View Part List 5
Point To Point Wiring Diagram 6
Exploded View 7
Exploded View Part List 8-10
Electrical Part List 11-19
Schematic Diagram 20-23
Printed Circuit Board Diagram 24-28
IC Block Diagram 29-34
SERVICE MANUAL
XP308I

General Specification
MIXER PART
NORMAL LIMIT
*MAXIMUM VOLTAGE GAIN
;MICINTOMONITORL/R 62±3dBm
;MICINTOMONITORL/R(MIC/LINEWITHIN) 32±3dBm
;MIC IN TO AMP OUT (MIC/LINE WITHIN,LIMITER LED JUST LIGHT) 58±3dBm
;MONO LINE IN TO MONITOR L/R 20±3dBm
;STLINEINTOMONITORL/R 28
±3dBm
;MONO MIC IN TO REC OUT 38±3dBm
*FREQUENCY RESPONSE (20HZ~20KHZ)
(LEVER VR NORMAL, MONITOR VR NORMAL OUTPUT LEVEL +4dBm)
;MICINTOMONITORL/R ±2dB
;LINEINTOMONITORL/R ±2dB
;LINEINTORECL/R ±2dB
*MAXIMUM OUTPUT LEVEL
(OUTPUT LOAD 10K ohm,Before just clipping)
;MIC IN TO MONITOR L/R 21 dBm more than 20dBm
*T.H.D
( LEVEL , MONITOR VR NOMINAL, OUTPUT +14dBm, OUTPUT LOAD 10K ohm 80KHz LPF)
;MICINTOMONITORL/R LESSthan 0.1%
;LINEINTOMONITORL/R LESSthan 0.1%
*HPF
(SPEECH/MUSICON75HzMONITOROUTPUT) -3dB±1
*TONE CONTROL
(CH LEVEL ,MONITOR VR NORMINAL,OUTPUT +4dBm)
;10KHZ ±12dB ±12±3dB
;100HZ ±12dB ±12±3Db

General Specification
NORMAL LIMIT
*RESIDUAL NOISE
(20KHz LPF , AVG)
A) INPUT,OUTPUT LEVEL VR MINIMUM
MONITOROUT LESS THAN -90 dBm
B)ONLY MONITOR VR MAXIMUM
MONITOROUT LESS THAN -70 dBm
*CROSSTALK
(CH LEVEL VR & MONITOR VR NORMAL,OUTPUT 20dBm , FREQ 1KHz , 80KHz LPF)
CH VS CH LESS THAN -67 dB
INPUT VS OUTPUT LESS THAN -70 dB
*LEVEL METER (0VU) 21±2dBm
*PHANTOMPOWER 15±1V
*ECHO
AMP PART
*RATED OUTPUT POWER (MASTER VR NORMAL, CH LEVEL VR TO RATED POWER,600ΏLOAD)
; 8 OHM @ 1KHZ, 5%THD (LPF 20KHz) (ONE CH) 100W More than 95W( no clipping)
*LIMITER (CH LEVEL VR & MASTER VR NORMAL)
(AMP OUTPUT) 105W LESS than 110W,no clipping
RATED Ouput,Again add 20dBm,Amp Output No Clipping
*FREQUENCY RESPONSE
8ohm load,Output 1W 6dB±2@50Hz, ±3dB@20kHZ
Remark:
1. If check we want to output test signal from the analyzer(VP-7723B),please parallel a 600 ohm Load from the output
signal.
2.. The low pass filter should be 20KHz while testing the part of Amp.

Block Diagram
3

Packing View
4

Packing View Part List
REF NO. DESCRIPTION PART NO. Q'TY REMARK
1 GIFT BOX 507-XP308I-3054 1
2 CUSHION 506-XP308I-541 2
3 PE-BAG 505-XPL100-200 1
4 I/B ASS’Y 701-XP308I-4503 1
5 OUT CARTON 507-XP308I-3084 1
6 CUSHION 506-XP308I-562 1
7 EPE BAG 509-XP308I-260 2
8 HIMILON 612-XP308I-336 2
9 EPE SHEET 509-XP308I-261 1
10 PE BAG 505-100U-204 1
11 6.35∮SPEAKER CABLE 408-EXL250-082A 2
12 AC CORD(L-1900 18AWG LP-31 SJT LS-13) 409-XM910-121 1
5

Point To Point Wiring Diagram
101 102
2
POWER&AMP PCB
1
DC FAN
I'POD INPUT PCB
POWER SW
AC INPUT JACK
MIXER PCB
4
3
1
45
AN3&AN4
AN1&AN2
OUTPUT PCB
5
6

Exploded View
7

Exploded View Part List
REF NO. DESCRIPTION PART NO. Q'TY REMARK
1 PUSH KNOB 100-L2400-2569 10
2 CONTROL KNOB(B) 100-XM610-2217 21
3 KNOB CAP(WHITE) 100-XM610WHT-2218A 7
4 KNOB CAP(RED) 100-XM610RED-2218A 1
5 KNOB CAP(BLU) 100-XM610BLU-2218A 1
6 KNOB CAP(SLIVE) 100-XM610SIL-2218A 12
7 INLAY 501-STAGE-2167 1
8 PANEL ASS’Y 703-STAGE-1235 1
9 CARD CHASSIS 100-XP300-2517 1
10 TOP DOCK 100-XP300-2503 1
11 IPOD BUTTON 100-XP300-2504 1
12 SUPPORT 200-L1200-589 5
13 LED HOLDER 504-BD1550-067 12
14 AMPLIFIIER CASE ASS’Y 701-XP308I-1243S 1
15 CONTROL KNOB 100-STAGE-2625 2
16 REAR PAD(A) 300-STAGE-1672 2
17 REAR BRACKET 300-STAGE-1674 2
18 SHAFT 200-SP300-583 2
19 WASHER 606-B300-030 2
20 REAR PAD(B) 300-STAGE-1673 2
21 HANDLE 100-STAGE-2623 4
22 HANDLE COVER 100-STAGE-2624 4
23 HANDLE PAD 604-STAGE-496 4
24 SCREW THUMB 601-EX250-038 2
25 REAR CASE ASS’Y 701-STAGE-4438 2
26 FRONT CASE 100-STAGE-2630 2
27 SPRING SHEET 300-XP308I-1706 4
28 SLIDE 100-STAGE-2622 2
29 GRILL 300-STAGE-1675 2
30 REAR COVER 100-STAGE-2628 1
31 INSULATION SHEET 501-SP300-2182 1
32 SHIELE FENCE 300-SP300-1685 1
33 HEATSINK 425-KMD3500-016A 4
34 HEAT SINK ASS’Y 703-SP308-1240 1
35 HEAT SINK 425-STAGE-123 1
36 BOTTOM INLAY 300-SP300-1684 1
37 INSULATION SHEET 501-SP300-2181 1
38 FILP FOOT 603-SP300-377 1
39 HOOK GUIDE 200-STAGE-578 4
40 HOOK 300-SP300-1683 2
41 BOTTON BRASS 200-SP300-582 2
42 CAM GUIDE 200-XP308I-586 4
43 MICA 501-TST4-2028 2
8

Exploded View Part List
REF NO. DESCRIPTION PART NO. Q'TY REMARK
44 SAMSON LOGO 501-XP308I-2205 2
45 KNOB NECK 100-XP308I-2649 10
46 WASHER 606-LC58FA-130 4
47 TOOTH WASHER 606-F200-002 1
48 NUT 601-F200-001 1
49 COTTON 509-XP308I-252 2
50 EVA 612-XP308I-322 1
51 EVA 612-XPL200-293 6
52 EVA 612-XP308I-323 3
53 SILICONE SHEET 612-XP308I-324 1
54 POWER SW 403-DJ1-107A 1
55 2P 3.96CON ASS'Y(UL1007#18,RED*2,L=200mm) 404-XPL200-2679 1
56 AC INPUT JACK 420-SX1800-195 1
57 1P CONNECTOR WIRE(L=80MM,UL1015#18) 406-XP308I-1088 1 TO AC INPUT JACK
“GND”
58 I'POD INPUT PCB ASS'Y 704-XPL300-7193 1
59 DC FAN 401-XP308I-076 1
60 OUTPUT PCB ASS'Y 704-XP308I-8289 1
61 WOOFER SPEAKER(WOOFER 8Ω/75W,8") 419-XP308I-065 2
62 3P CONNECTOR WIRE(L=550mm,UL1430#18 TS RED/BLACK) 404-XPL200-2775 2
63 TWEETER SPEAKER(8Ω20W ∮25) 419-XP308I-066 2
64 3P CON ASS'Y(UL1430#18,BULE BLACK,L=550mm) 404-XPL100-2676 2
65 SPEAKER TWO FREQUENCY PCB ASS'Y 704-XP308I-8251 2
66 SPEAKER INPUT PCB ASS'Y 704-XP308I-8347 2
67 MIXER PCB ASS'Y 704-XP308I-8285 1
68 POWER&AMP PCB ASS'Y 704-XP308I-8286 1
69 AC CORD(L-1900 18AWG LP-31 SJT LS-13) 409-XM910-121 1
70 2P CONNECTOR(L=170mm UL1617#18 P=3.96mm) 404-XP308I-3148A 1 TO AC INPUT JACK “N
”
71 FERRITE CORE 415-F806-264 1
72 SAFETY CAPACITOR(2200pF/250VAC,M,Y5U,Y2,TAPING) 413-XP308I-1148 2
S1 SCREW TTB 4*10 602-PTPB4010-665 2
S2 SSCREW(3*8mm TTB) 602-2002-077 8
S3 SCREW TTB3*8 602-XM610-528 24
S4 SCREW M2.6*6 602-XM610-514 5
S5 SCREW M2*5 602-DD2220-301 4
S6 SCREW 2.6*6 602-KMD510-158 4
S7 SCREW 2.6*6 602-ISOB2606-654 9
S8 SCREW M3*6 602-SX1200-544 4
S9 SCREW BM4*8 602-CDVD2001-351 2
S10 SCREW 602-TTB5024-668 22
S11 SCREW TTB 4*16 602-BTTB4016-676 20
S12 SCREW M6*16 602-PISO6016-667 8
9