Bose 1600-VI Service Manual Download Page 1

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1998 Bose Corporation

Model 1600

and 1800

Professional

Stereo Power Amplifiers

Part Number 199747 Rev. 00

Service Manual

Summary of Contents for 1600-VI

Page 1: ...1998 Bose Corporation Model 1600VI and 1800VI Professional Stereo Power Amplifiers Part Number 199747 Rev 00 Service Manual...

Page 2: ...nents 27 Figure 9 Heatsink Bridge 27 Figure 10 Input Module Screw Location 29 Test Procedures 31 33 Figure 11 EQ Card Placement 31 Frequency Response Test Table 32 Part List Notes 34 Main Part List 35...

Page 3: ...3...

Page 4: ...ransformer during this test Use a leakage current tester or a metering system that complies with American National Standards Institute ANSI C101 1 Leakage Current for Appliances and Underwriters Labor...

Page 5: ...THD Voltage Output 60 V line voltage per channel into 8 Ohms 49 V line voltage per channel into 4 Ohms Dynamic Headroom 1 0 dB nominal Power Bandwidth 5 Hz to 40 kHz 0 3 dB Frequency Response 20 Hz to...

Page 6: ...V S RFI filtering removed CMRR 80 dB 1 kHz without Bose input module 60 dB from 20 Hz 20 kHz without Bose input module Power Consumption 55 W at idle 800 W with musical program 1500 W at full power i...

Page 7: ...than 0 2 THD Voltage Output 43 8 V line voltage per channel into 8 Ohms 36 0 V line voltage per channel into 4 Ohms Dynamic Headroom 2 0 dB nominal Power Bandwidth 5 Hz to 40 kHz 0 3 dB Frequency Resp...

Page 8: ...width limited CMRR 80 dB 1 kHz without Bose input module 60 dB from 20 Hz 20 kHz without Bose input module Power Consumption 45 W at idle 500 W with musical program 1000 W at full power into 8 Ohms co...

Page 9: ...Supplies On Off Standby Sequence Fuse 230V Only Regulation not used with 1600VI Phase Control Temperature Sense Protection Display Drive Display Level Control Sequence Control Input Module Bose EQ Ca...

Page 10: ...allow 1 4 TRS XLR or quick connect terminal block connection Two input connectors for each channel are wired in parallel Accepts balanced or unbalanced lines Independent CH 1 and CH 2 Level Controls w...

Page 11: ...rge The signals are then routed to the A inputs of op amp switch ICs BA3128 U4 CH1 and U3 CH2 and to EQ card connectors J6 4 and J7 4 respectively The switch s B inputs are driven by the output of the...

Page 12: ...t and sets the closed loop gain at 27 6 dB for the 1600VI and 30 3 dB for the 1800VI The factory default settings are 33 3 dB for the 1600VI gain and 36 0 dB for the 1800VI gain The output of U100A 1...

Page 13: ...o pairs of DC supply voltages 90 Vdc and 45 Vdc for the 1600VI and 106 Vdc and 53 Vdc for the 1800VI each having its own bridge rectifier and filter capacitors The 15 Vdc is tapped from the 53 Vdc for...

Page 14: ...will then remain off for a number of degrees of the sinusoid before switching on again The phase angle at which the triac switches on is the firing angle of the triac This produces enough voltage to...

Page 15: ...ignal level exceeds the threshold of the comparator Q4 positive or Q10 negative turns on Current can now flow from ground through Q8 which acts as a current source for Q6 Q6 or Q11 turn on providing g...

Page 16: ...comparators to each other When U1A 1 fires the current through R24 reverses the sequence of the voltages that estab lish the thresholds for the three comparators This allows the same comparators to pe...

Page 17: ...e conduction current through optocoupler U1 which shuts off the triac and primary current Note The Regulator PCB is not used in the 1600VI amplifier 3 4 Overheated Output Transistors A thermistor RT10...

Page 18: ...the same position for a balanced output When S1 is switched to the Dual Mono position CH 1 is connected in parallel with the CH 2 input but in phase The CH 1 input connection becomes disabled This all...

Page 19: ...he two longer screws located in the center behind the rack mount brackets with a phillips head screwdriver See Figure 2 Note Refer to Figure 6 for the following procedures 3 Display Board Removal 3 1...

Page 20: ...e 3 Cover Attaching Hardware Qty 2 3 3 3 Qty 2 11 11 AC 1800 W 50 60Hz 100V CONSULT OWNERS MANUAL 1800 SERIES V PROFESSIONAL AMPLIFIER LICENSED UNDER U S PAT NO 4 484 150 D O M BOSE CORPORATION FRAMIN...

Page 21: ...10 11 2 1 5 3 4 J1 21 Nylon Clamp Anchors C4 C7 Capacitors Cover 15 Amplifier Board Output Board Terminals WL1 WL2 WL100 WL101 WL200 and WL201 I O Board J3 Connector Large Ribbon Cable I O Board J100...

Page 22: ...51 37 41 Qty 4 37 42 Qty 2 P1 31 LOAD LINE Qty 2 25 Output Board Output Board J2 Connector Fan Upper Shield Lower Shield Binding Post Terminal Plug Input Module Assembly Input Module J1 Connector I O...

Page 23: ...el hole labeled Standby For 240V units make sure the board s LED is aligned underneath the ON position icon 8 3 Replace the cover 1 using procedure 2 4 3 Connect the power supply cables back to transf...

Page 24: ...ect all of the connectors attached to the transformer 4 terminals 11 3 Place the chassis 2 on its side 11 4 While holding the transformer with one hand use a phillips head screwdriver to remove four s...

Page 25: ...the nylon clamp 21 that fastens the power supply capacitors 7 C4 C7 to the chassis 2 DISASSEMBLY ASSEMBLY PROCEDURES Note Some cables are bundled together Cut any wire wraps when necessary 13 5 Note t...

Page 26: ...e I O board E10 and E11 terminals They are located near the amplifier board transistor shield 19 15 9 Using a phillips head screwdriver remove four screws 29 from the two brackets 22 that secure the h...

Page 27: ...ply board with a phillips head screwdriver 17 10 Lift the power supply board from the chassis Figure 8 Side View Bottom Mounted Components AIR FLOW 51 Qty 2 38 52 14 Qty 4 13 35 12 Qty 2 21 Qty 4 18 2...

Page 28: ...y removing two screws 3 with a phillips head screwdriver The screws are located over the fan exhaust slot 19 4 Release the lower shield from the bottom of the chassis by removing two screws 3 with a p...

Page 29: ...ch the I O board to the chassis back panel by tightening four screws 11 with a phillips head screwdriver The screws are driven from the outside of the back panel 22 5 Use Procedure 16 Steps 16 4 16 15...

Page 30: ...tor If you are removing an EQ card grip it firmly and gently pull it straight out of the connector located on the module 27 4 Replace the module using procedure 24 or 26 as applicable Note The Bose AC...

Page 31: ...you will need to replace it with a standard Input Module in order to be able to test it Inputs Outputs Audio Signal Generator Loads Amplifier rear panel Input Module dB Meter Only if you are connecte...

Page 32: ...ode Once the short is removed the output relays should stay on and provide signal output to the binding posts 6 Thermal Shut Down Test 6 1 Remove the top cover using Disassem bly Assembly procedure 1...

Page 33: ...l or a load on the outputs Refer to the PCB layout diagrams for part locations 10 1 Using a DVM measure the DC voltage across one of the emitter resistors For the 1600VI amplifier measure across R144...

Page 34: ...uropean units 8 Australian units 9 Japanese units PART LISTS AND EXPLODED VIEWS The following section contains part lists and exploded views for the 1600VI and 1800VI Amplifiers The part lists are bro...

Page 35: ...63 1 3 6 9 w Tabs 8A 230V 182764 3 7 8 11 Screw SEMS PHP 6 32 x 1 4 BO WAX I O 4 output 4 L F 2 182723 12 12 Nut 6 32 Hex Kep STZ linefilter 2 fan 2 chassis gnd 2 199774 8 13 Screw SEMS PHP 10 32 x 3...

Page 36: ...ded Nylon 199780 1 37 Screw Machine FHP 4 40 x 1 2 card slide conn brkt 182717 4 38 Screw TF 4 40 x 1 4 FHP UC ST BZ shield brkt 199771 4 39 Screw PHSL 4 40 x 3 8 Nylon 6 6 182726 1 40 Kepnut 4 40 ZC...

Page 37: ...L 2 POWER 1800 SERIES VI PROFESSIONAL AMPLIFIER 0 25 1 2 3 5 5 8 12 20 40 OFF OFF 40 20 12 8 5 3 5 2 1 25 0 ON 12 9 6 3 0 dB PEAK PROTECT PEAK PROTECT STANDBY ON Qty 2 46 1 9 Qty 2 3 Qty 3 3 3 Qty 2 1...

Page 38: ...38 Figure 15 Cross Section View AIR FLOW 51 Qty 2 38 52 14 Qty 4 13 35 12 Qty 2 21 Qty 4 18 29 22 Qty 2 3 Qty 4 3 Qty 4 30 Attaches clamp...

Page 39: ...Top View LINE LOAD 240V Line Filter 53 9 240V Configuration R101 R102 3 29 7 6 20 Qty 2 Qty 6 Qty 28 44 Qty 2 8 5 45 Qty 2 20 Qty 2 19 50 48 1 BRN BLU LINE LOAD 47 Qty 2 35 10 9 6 7 8 9 10 11 2 1 5 3...

Page 40: ...4 T1 J1 A3 28 24 B1 Qty 2 11 Qty 4 26 27 12 33 34 32 6 7 8 9 10 11 2 1 5 3 4 10 Qty 2 11 12 FL1 E1 12 14 Qty 4 F1 Qty 2 40 51 37 41 Qty 4 37 42 Qty 2 P1 31 LOAD LINE Qty 2 25 Figure 17 1600VI and 180...

Page 41: ...R109 209 29 4k MF 1 4W 1 199754 4 R109 209 45 3k MF 1 4W 1 182803 5 R110 R210 2 2k CF 1 4W 5 182793 R111 112 211 212 909 MF 1 4W 1 182804 R113 213 100k MF 1 4W 1 182801 R122 222 16k CF 1 4W 5 182791 R...

Page 42: ...mall Signal 182817 Q101 106 201 206 PNP MPSA92 TO92 182818 Q102 202 PNP 2SA1381E TO126 182820 Q103 203 NPN 2SC3503E TO126 182819 Q104 204 NPN MPSA18 TO92 182816 Q105 205 NPN MPSA42 Small Signal 182817...

Page 43: ...W 5 182850 R2 8 2 CF 1 2W 5 182857 R3 12 21 32 41 52 63 1k CF 1 4W 5 182788 R4 18 HM CC 1 2W 5 187934 18R0 R5 9 6 2k CF 1 2W 5 182856 R6 7 8 1 MF Fuse 1 4W 5 182861 R10 13 15 27 29 31 42 44 46 59 60 6...

Page 44: ...Triac Q6025k6 25A 600V TO218AC 199765 4 Q1 Triac Q6040K7 40A 600V TO218AC 182867 5 Q2 NPN 2N6488 TO220 182876 Q3 PNP 2N6490 TO220 182877 Q4 15 NPN MPSA43 TO92 182872 Q5 7 12 16 18 23 PNP MPSA56 TO92...

Page 45: ...JP3 Jumper 2 x 25 22AWG Insul Wht 182881 5 JP4 Jumper 18AWG 5in Insulated 182882 WL1 2 3 4 5 6 7 8 Connector Tab 250 PCMT 182825 Heatsink Power Supply 1600VI 1800VI 199794 Heatsink 75H TO 3 Bridge Rec...

Page 46: ...Fuse 1 4W 5 199752 R5 2 2k CF 1 4W 5 182793 R6 4 7 MF Fuse 1 4W 5 182808 R7 8 100k CF 1 4W 5 182790 R8 12 20 27 28 53 96 97 99 100 10 0k MF 1 4W 1 182800 R9 11 56 92 1k CF 1 4W 5 182788 R10 26 63 76...

Page 47: ...N 2N4123 TO92 SM SIG 182913 Integrated Circuits Reference Designator Description Part Number Note U1 Op Amp Dual J FET 9 pin SIP 182915 U2 7 9 Dual Op Amp 4558 8 pin SIP 182914 U3 8 Optoisolator VTL5C...

Page 48: ...R110 210 1 Metal Oxide Film 5W 5 182931 R111 211 1 MF Fuse 1 4W 5 182861 R112 113 212 213 10 MF Fuse 1 4W 5 182937 R114 214 1 1k CF 1 4W 5 182926 Capacitors Reference Designator Description Part Numb...

Page 49: ...Miscellaneous Reference Designator Description Part Number Note K100 200 Relay SPST NO 24V 20A 182942 L100 200 Choke 5uH 14AWG Wire 182941 J2 Header 14p Dual Row 1 CTR G 182922 J3 Header 2p 1 CTR LOC...

Page 50: ...0 30k CF 1 4W 5 182852 R23 24 20k MF 1 4W 1 182957 R25 390 CF 1 4W 5 182951 R26 3 3k CF 1 4W 5 182979 R27 22k Metal Oxide Film 1W 5 182959 R28 29 30 31 681 MF 1 4W 1 182859 R32 18k CF 1 4W 5 182948 R3...

Page 51: ...STR CNY17 2 300 182965 U2 Power Supply HV3 2405E 5 182963 U3 Opto Triac Driver MOC3052 182880 U4 Op Amp Comparator MC3405P 182964 U5 Dual Op Amp 4558 8 pin SIP 182914 Miscellaneous Reference Designato...

Page 52: ...Number Note U1 2 3 4 Dual Op Amp 4558 8 pin SIP 182914 ELECTRICAL PART LIST Display PCB Assembly Resistors Reference Designator Description Part Number Note R9 10 13 17 24 35 10 0k MF 1 4W 1 182800 R...

Page 53: ...eference Designator Description Part Number Note C37 38 39 40 330pF Ceramic Disc 5 100V 182992 C41 3300pF Ceramic Disc 10 100V 183883 C42 3300pF Ceramic Disc 10 100V 183883 C43 220uF AE Radial 20 16V...

Page 54: ...CTR 182988 J2 Header 4 pin Rt Angle Blind Mate 182991 J3 Header 2 pin 1 CTR Lock ST Post 182921 J4 5 Header 90deg Closed End 3 pin 182990 J6 7 Header 12 pin 098 CTR Shroud 182987 P1 4 Jack XLR TRS Ri...

Page 55: ...0VI Amplifiers Packing Diagram Item Number Description Part Number Qty Note 1 Box Shipping 1600VI 199798 1 1800VI 199799 2 Sleeve Cord holder 13 1 4 x 12 182752 2 3 Foam Packaging 2U 182753 4 4 Manual...

Page 56: ...J1 3 14 13 12 11 10 9 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 10 9 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 10 9 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 9 10 16 15...

Page 57: ...E F1 RED WHT BLU BLK J1 J1 REGULATOR BOARD Not used in 1600VI Amp POWER SUPPLY BOARD TIP RING WL4 WL5 BRN BLU W7 W6 SEQUENCE S1 POWER SWITCH W4 E1 GRN YEL BLU BRN P1 LINECORD L2 L1 L1 LINE LOAD FL1 LI...

Page 58: ...Output 2 8 Vcc 1 2 3 4 5 6 7 8 1 Output1 2 Inverting input1 3 Non inverting input 1 4 Vcc 5 Non inverting input 2 6 Inverting input 2 7 Output 2 8 Vcc 1 2 3 4 5 6 7 8 1 Output1 2 Inverting input1 3 No...

Page 59: ...Inv Input 6 Comp 2 Non inv Input 7 Comp 2 Output 8 Op Amp 2 Output 9 Op Amp 2 Inv Input 10 Op Amp 2 Non inv Input 11 VEE GND 12 Op Amp 1 Inv Input 13 Op Amp 1 Non inv Input 14 Op Amp 1 Output 5 6 7 8...

Page 60: ...99747 Rev 00 12 98 FOR TECHNICAL ASSISTANCE OR PART ORDERS CALL 1 800 367 4008 Bose Corporation The Mountain Framingham Massachusetts USA 01701 SPECIFICATIONS AND FEATURES SUBJECT TO CHANGE WITHOUT NO...

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