Alesis LRP4 User manual

SPECIFICATIONS
SERVICE MANUAL
MODEL: LRP4
FEATURES
Compatible with iPod Classics, 5th-Generation iPods, 2nd- and 3rd –Generation
iPod nanos, and iPod nano-chromatics *
44.1kHz, 16-bit Recording Capability
2 Built-In Condenser Microphones for Stereo Recording
2 Combo Mic / Line Inputs – Connect 1 stereo or 2 mono sound sources such as XLR or 1/4” microphones and other line sources
Analog Input Limiter – Prevents hard digital “clipping” of the recorded signal in your iPod
Direct Monitoring – Monitor your recording with zero latency
Headphone output with dedicated volume control
Switchable 48V Phantom Power for Microphones
External Power Supply (AC Adapter) or Battery Power (4 AAA)
TECHNICAL SPECIFICATIONS
ANALOG INPUTS
Gain
Internal Mic Inputs: +6dB to 49.3dB
External Inputs (XLR): +6dB to 49.3dB
External Inputs (1/4”): -11.3dB to +32dB
THD+N
2nd & 3rd Gen. iPod nano: 0.01% @ 92dB SNR A-weighted (charge off, min. gain)
5th Gen. iPod / iPod Classic: 0.014% @ 88dB SNR A-weighted (charge off, min. gain)
DIGITAL CIRCUITRY
Bit Depth 16-bit
Sample Rates 44.1kHz (high); 22.05kHz (low)
MAIN OUTPUTS
Max Level +0.3dBu Maximum
THD+N < 0.01% @ 1kHz
HEADPHONE OUTPUTS
Max Level 75

output impedance, 40mW into 32

BATTERY LIFE
Without phantom power > 3 hours
Using phantom power > 2 hours
EXTERNAL BATTERY PACK REQUIREMENTS *
6V DC 1A
2mm diameter (center pin); 5.5mm outside diameter
Wired as center positive

DISASSEMBLY PROCEDURES
1. DISASSEMBLE THE BOTTOM COVER.
(A) AFTER PICKING OFF THE RUBBER FOOT PAD, AND TAKES OUT 1 PCS SCREW FROM THE BOTTOM COVER.
(B) AFTER PICKING OFF THE BATTERY COVER, AND TAKES OUT 2PCS SCREW FROM THE BOTTOM COVER.
(C) REMOVE 1 PCS SCREW FROM THE BOTTOM COVER.
(Fig1)
2. DISASSEMBLE THE XLR PCB.
(A) REMOVE 2 PCS SCREW FROM THE BOTTOM COVER.
(Fig2)

3. DISASSEMBLE THE MAIN PCB.
(A)REMOVE 3 PCS SCREW FROM THE MAIN PCB.
(Fig3)
4. DISASSEMBLE THE DOCK PCB.
(A) REMOVE 2 PCS SCREW FROM THE iPOD CONNECTOR BASE.
(B) REMOVE 2 PCS SCREW FROM THE PCB CLANP.
(Fig4)

5. DISASSEMBLE THE METER PCB.
(A) REMOVE 4 PCS SCREW FROM THE METER PCB.
(Fig5)
6. DISASSEMBLE THE KNOB CAP.
(A) AFTER PICKING OFF THE KNOB CAP AND REMOVE 2 PCS FROM THE KNOB.
(Fig6)

7. DISASSEMBLE THE MICROPHONE.
(A)REMOVE MICROPHONE HOLDER FROM THE MIC CAPSOULE.
(Fig7)

WIRING DIAGRAM
(US/EU/UK/JIS/AUS NZ)

EXPLODE DIAGRAM
(US/EU/UK/JIS/AUS NZ)
EQUENCIAL NO EXPLODE DIAGRAM WILL BE MARKED ON REF.COLUMM OF BOM LIST

PACKING DIAGRAM
(US/EU/UK/JIS/AUS NZ)

LRP4ALE01 BOM
    
LEVEL
P/N DESCRIPTION QTY REF
1 BA70978-130 BATTERY CONTACTER(+) 1 37
1 BA70979-130 BATTERY CONTACTER(-) 1 36
1 BA70980-130 BATTERY CONTACTER(+/-) 2 34
1 BA70980-160 BATTERY CONTACTER(-/+) 1 35
1 EVA1304438 Sponge 38X15X T3 1 39
1 EVA1304441 EVA 1
1 EVA1304442 EVA 1
1 EVA1304444 MIC SPONGE 1 50
1 LAC22ALE68 LRP4_017-01 Rubber Foot 1 49
1 LAC42ALE91 STICKER LABEL 1
1 LAC42ALE93 SAFETY LABEL 1 48
1 LAC67YAH259 LABEL 3
1 LAC67YAH261 STICKER 8MM GREEN 1
1 MT1301818 GROUND FOIL 2
1 MT13044120 Kensington Plate 1 21
1 MT13044121 LRP4_016-01 Mic rophone Guard 1 22
1 MT13044125 HOLD PLATE R 1 24
1 MT13044126 HOLD PLATE L 1 23
1 PLRP4ALE01 PACK ASS'Y 1
2 AA419829J POLY BAG(O/M A-4)-2 1
2 AL7-51-0154-H SAFTY & WARRENTY MANUAL 1
2 AL7-91-1002 GEL SILICA 1
2 CGLRP4310ALE01 Gift box 1
2 CTLRP4513ALE01 Out carton 0.25
2 OPLRP4ALE01 Quick start manual 1
2 PE111580BO POLYBAG 3
2 PLLRP401 poly foam R 1
2 PLLRP402 poly foam L 1
2 SD20010000 Soft Bag 1
1 PT1304320 iPOD Cover Release Cap (POM) 1 20
1 PT1304321 iPOD sled Release plunger(POM) 1 19
1 PT130444801 LRP4_003-01 iPOD Mounting Sled 1 3
2 PT1304448 LRP4_003-01 iPOD Mounting Sled 1
3 PMPC-122 PM 0.03
1 PT130444901 LRP4_006-01 iPOD Mounting Sled 1 2
2 PT1304449 LRP4_006-01 iPOD Mounting Sled 1
3 PMPC-122 PM 0.03
1 PT1304450 LRP4_005-01 iPOD connector bas 1 11
1 PT1304454 PCB CLANP 1 13
1 PT1304476 PORTECT FILM 1 51
1 PT131040501 LRP4_015-01 Meter Lens 1 46
2 PT1310405 LRP4_015-01 Meter Lens 1

1 PT1310610601 LRP4_009-01 REC/ENTER Button 1 4
2 PT13106106 LRP4_009-01 REC/ENTER Button 1
1 PT1310610701 LRP4_009-01 REC/ENTER Button 1 5
2 PT13106107 LRP4_009-01 REC/ENTER Button 1
1 PT1310610801 KNOB CAP PLATING 2 6
2 PT13106108 KNOB CAP 2
1 PT1310610901 KNOB BASE PLATING 2 8
2 PT13106109 KNOB BASE 2
1 PT13106110 LRP4 Slide Switch Cap 5 17
1 PT133010601 LRP4_Top Housing 1 1
2 PT1330106 LRP4_Top Housing 1
3 PM3373MB COLOR RESIN 0
3 PM5712FNC1 PM 0.05
1 PT133010701 LRP4_004-01 Battery Cover 1 40
2 PT1330107 LRP4_004-01 Battery Cover 1
3 PM3373MB COLOR RESIN 0
3 PM5712FNC1 PM 0.03
1 PT133031501 LRP4_002-01 Bttom Housing 1 31
2 PT1330315 LRP4_002-01 Bttom Housing 1
3 MT13044119 INSERT SCREW 1
3 PM3373MB COLOR RESIN 0
3 PM5712FNC1 PM 0.06
1 RU1330703 LRP4_017-01 Rubber Foot 1 32
1 RU1504306 RUBBER MAT 2 38
1 SC0204PBNI SCREW 7 10
1 SC1404IINI SCREW 2 7
1 SC2606RBNI SCREW 2 15
1 SP1304406 Spring of release plunger 1 18
1 SPSA11930606W2 ADAPTOR 1
2 MT13044122 Fine Metal Screen 2 29
2 PT130431901 LRP4_008-01 Microphone Cap 2 27
2 PT1304475 Mic Holder 2 30
1 WS106002108M NYLON WASHER 7 42
1 TWPC08A02001 MAIN PCB ASS'Y 1
2
AL9-79-045401 Main PCB ASS'Y 1
3
AA822519X IC LP2985IM5-3.3 1 U8
3
AA822748X DIODE BAV99 8 D2~5,17~20
3
AL1-08-0222 E.CAP 22UF/16V(MINI) 1 C7
3
AL1-60-7153 ECAP LOW ESR 150uF/25V SMD-F 1 C27
3
AL1-60-7332 CAP 33uF ELEC 63V LOW-ESR SMD- 1 C13
3
AL1-60-7473 ECAP LOW ESR 470uF/16V SMD-F 2 C12,22
3
AL2-49-0070 DIODE BAV70 1 D1
3
AL2-51-0140 DIODE POWER SCHOTTKY MBRS140LT 5 D6,7,14~16
3
AL2-51-4401 TRANS NPN 2N4401 40V 1A SOT-23 3 Q2,3,7