Sunn 1200s User manual

SUNN 1200S
p/n 021-3300-000 (120V)
SERVICE MANUAL
CONTENTS:
Notices
Specifications
Circuit description
Parts lists:
PCB assembly
Chassis assembly
End item
Footswitch assembly
Footswitch PCB
Schematics
Service diagrams
sunn

is a registered trademark of
Fender Musical Instruments Corp. 7975 North Hayden Road Scottsdale, AZ 85258
SUNN 1200S
(This is the model name for warranty claims)
AUGUST 1998
IMPORTANT NOTICE:
The information contained herein is CONFIDENTIAL and PROPRIETARY to Fender Musical Instruments Corp. It is
disclosed solely for use by qualified technicians for purposes of equipment maintenance and service. It is not to be
disclosed to others without the expressed permission of Fender Musical Instruments Co. All specifications subject to
change without notice.
For warranty repair service, only Fender specified part numbers are to be used. It is recommended they also be used
for post-warranty maintenance and repair.
Parts marked with an asterisk (*) indicate the required use of that specific part. This is necessary for RELIABILITY and
SAFETY requirements. DO NOT USE A SUBSTITUTE!
A coded naming convention is used in the description of certain parts. The codes and what they mean are as follows:
CAPACITOR CODES HARDWARE CODES
CAP AE = Aluminum Electrolytic BLX = Black Oxide
CAP CA = Ceramic Axial CR = Chrome Plated
CAP CD = Ceramic Disk HWH = Hex Washer Head
CAP MPF = Metalized Polyester Film M = Machine Screw
CAP MY = Mylar NI = Nickel Plated
CAP PFF = Polyester Film/Foil OHP = Oval Head Phillips
PB = Particle Board
RESISTOR CODES PHP = Pan Head Phillips
PHPS = Pan Head Phillips Sems
RES CC = Carbon Comp SMA = Sheet Metal "A" Point
RES CF = Carbon Film SMB = Sheet Metal "B" Point
RES FP = Flame Proof SS = Stainless Steel
RES MF = Metal Film TF = Thread Forming
RES WW = Wire Wound ZI = Zinc Plated

SPECIFICATIONS
Product Release No.: PR 348 (This is not a model number)
Part Number: 120V Version : 21-3300
240V Aust : 21-3330
230V UK : 21-3340
230V : 21-3360
100V : 21-3370
Preamp section
Input impedance: 470k Ω
Full power sensitivity: 12.75mV
Tone controls: Treble: +/- 15dB @ 3kHz
Bass: +/- 15dB @ 40Hz
Graphic Equalizer: +/- 12dB @ 31.5Hz, 63Hz, 125Hz, 250Hz, 500Hz, 1kHz, 2kHz,
4kHz, 8kHz, 16kHz
Mid notch: -20dB @ 700Hz
Low boost: +10dB @ 40Hz
High boost: +10dB @ 6kHz
Power Amplifier Section
Power output: 1200 Watts RMS into 2 Ω@ <0.2% THD
Sensitivity: 1V RMS (0dBV)
Power Requirements: 100V AC, 50/60 Hz, 1800W
120V AC, 60 Hz, 1800W
230V AC, 50 Hz, 1800W
Speaker Complement: Designed for use with the Sunn 410H or Sunn 215 Bass
Loudspeaker Enclosures
Dimensions: Height: 3.5" (8.9 cm)
Width: 19.0" (48.3 cm)
Depth: 15.0" (38.1 cm)
Weight: 35 lbs (15.9 kg)
Product specifications are subject to change without notice
CIRCUIT DESCRIPTION
The Sunn 1200S Bass Amplifier employs many new technologies in various sections. This document is a
brief overview.
Preamp
The preamp section employs two 12AX7 tubes. Channel one (V1) is fairly conventional, while channel two (V2) uses a
second tube with additional op-amp gain (U2B) to provide a 60's style overdrive sound. The op-amp is used as
straight gain and is never allowed to become non-linear.
In typical operation, the drive channel and the clean channel are presented to the channel 1/2 mix control (R25) so that
a "blend" can be established. The channel select button (S7) on the front panel (or it's foot switch counterpart) selects
between this channel mix or channel one only. This selection employs JFETS Q1-Q4.
Signals are then presented to a second-order Sallen and Key filter set to F0 of 36.6 Hz and a Q of 2.1. This filter
provides about 6.5dB of boost at 41 Hz.
The signal path is routed to U4B where low-boost (S2) , mid-notch (S4), and high-boost (S3) equalization switches can
be used. These circuits are followed by conventional Baxendall low (R67) and high (R70) equalization. The Baxendall
circuit output is then sent to a graphic equalizer which can be selected by the footswitch or graphic EQ button (S61) on
the front panel. The far-right graphic EQ slider (R660) is a +/- 10dB trim for graphic EQ gain compensation.
Next, the signal is presented to a second-order state-variable filter before being presented to the compressor circuit.
Said filter is set to 420 Hz. At the compressor, low-frequency compression ratio (R88) and high-frequency
compression ratio (R98) are adjustable to suit the user. Audio is presented to the "compressor EQ balance" (R107).
The compressor EQ balance controls the mix ratios of the compressor outputs. A compressor gain trim (R113) is
provided to compensate for the amount of amplification lost due to using the compressor. The compressor-gain trim
control is able to compensate for a compressed signal of up to 10dB.
The FETs Q5 and Q6 select between pre- and post-compressor via the front panel switch (S8) or footswitch. After
passing through op-amp U10B and master-gain control R116, the signal is sent to output jack J3, effects-loop send.
The signal input at J4, effects-loop return, goes to differential receiver U11B.
Signals are forwarded to power amp pass through amplifier U12B and on to J5. At these same nodes, the signal is
passed on to the 1200 Watt class H power amplifier.

Power Amplifier
The power amplifier employs class AB topology in the pre-driver circuit Q8-Q11. Quiescent current is established with
transistors Q12-Q13. Driver transistors Q16-Q17 provide drive for Q23-Q26, and Q31-Q34. Transistors Q19,Q21, and
Q27-Q30 provide positive “on demand” supply-rail boost. Transistors Q20, Q22, and Q35-Q38 provide the same
function for the negative rail.
Transistor Q18 provides “charge depletion” of Q23-Q26 and Q31-Q34. This allows for the suppression of common
mode current that can occur at high frequencies.
Relay K1 and associated components reduce output-stage current gain to unity during power-up and over-temperature
events as monitored by thermistor RT1 on the main heatsink.
Power supply
Primary circuit inrush limiting is accomplished by TH1, a negative temperature coefficient thermistor.
The power supply employs a toroidal power transformer with only one tapped-main secondary. Two large bridge
rectifiers are used to obtain +/-47VDC and +/- 94VDC.
High voltage (356VDC) for vacuum tube sections is generated by half-wave multiplier comprised of CR92-CR95,
C125-C128.
Low voltage (+/-22VDC) and (+10~ +28VDC variable fan) is supplied by the synchronous rectifier system located on
the power supply break-away board. This synchronous system observes the input sine and allows Q81, Q85, and Q88
to be forced on until the input sine wave reaches the correct level as observed by Q83, Q87, and Q90. References
Q84 (variably controlled by RT2) CR811 and CR818 are employed. Regulators U21 and U22 reduce the +/-22V lines
to +/-16VDC
Heater voltage (24VDC for 2 series-connected 12AX7s in the preamp) is derived from the 32VDC supply (+/-
16VDC).. Excess voltage is dropped across across paralleled ballast resistors, R354-R356, on the preamp PCB.
PARTS LIST
NOTE: SHADED ITEMS ARE FOR REFERENCE ONLY
PRINTED CIRCUIT BOARD ASSEMBLY
QTY PART # DESCRIPTION REFERENCE DESIGNATION
2 0052047000 BRIDGE RECT 35A 800V BR1 BR2
9 0048451000 BUTTON PUSH OFF WHITE
2 0053930000 CABLE RIBBON 3 CKT 3 in P1A P5A
1 0048914000 CABLE RIBBON 8 CKT 7 in P4A
1 0054388000 CABLE RIBBON 8 CKT 9 in P8A
2 0033606003 CAP AE RDL .47UF 50V 20% C116 C640
3 0028494000 CAP AE RDL 1000uF 35V 20% C802 C805 C809
2 0028476003 CAP AE RDL 100UF 50V 20% C806 C810
6 0028463003 CAP AE RDL 10UF 50V 20% C39 C43 C46 C50 C55 C59
1 0028458003 CAP AE RDL 1UF 50V 20% C53
10 0028459003 CAP AE RDL 2.2UF 50V 20% C24 C34-35 C52 C57 C81-83 C85 C88
2 0054204000 CAP AE RDL 22UF 450V 20% C130-131
37 0028467003 CAP AE RDL 22UF 50V 20% C1-2 C7 C19 C23 C40 C48 C51 C56
C61 C64-66 C69 C72-74 C76 C105
C134 C137 C601 C603-613 C634 C636
C638-639
4 0028460003 CAP AE RDL 4.7UF 50V 20% C12-13 C28 C161
2 0053955003 CAP AE RDL 47UF 160V 20% C92-93
4 0054206000 CAP AE RDL 47UF 350V 20% C125-128
1 0054205000 CAP AE RDL 47UF 450V 20% C129
6 0047195003 CAP AE RDL 47UF 63V 20% C4 C86 C98-99 C803 C807
2 0037182000 CAP AE RDL 6800UF 63V 20% C121-122
2 0053915000 CAP AE100V10000uF 20% C123-124
1 0039261001 CAP CA 330PF 100V C80
34 0034788003 CAP CD .1UF 50V 20% .15"CUT C644-649 C94-95 C132-133 C135-136
C139-160
3 0051457003 CAP CD 100pF 500V 5% C100-101 C637
2 0051960003 CAP CD 180 PF 500V 10% C14 C20
9 0051406003 CAP CD 220PF 500V 10% C25 C45 C62-63 C67-68 C70-71 C641
4 0051445003 CAP CD 22PF 500V 5% C18 C49 C54 C58
3 0051409003 CAP CD 68pF 500V 5% C16 C60 C89
2 0027255003 CAP MPF .001UF 100V C5 C11
3 0027257003 CAP MPF .0022UF 100V C44 C47 C87
1 0027260003 CAP MPF .0039UF 100V C79
5 0027261003 CAP MPF .0047UF 100V C38 C84 C96-97 C162
2 0027262003 CAP MPF .0068UF 100V C41-42
2 0027264003 CAP MPF .01UF 100V C602 C635

PRINTED CIRCUIT BOARD ASSEMBLY (CONT)
QTY PART # DESCRIPTION REFERENCE DESIGNATION
1 0047165000 CAP MPF .01UF 250V C138
9 0027267003 CAP MPF .022UF 100V C31-33 C622-627
9 0027272003 CAP MPF .047UF 63V C26-27 C75 C107-108 C114-115 C642-
643
1 0027275003 CAP MPF .068UF 100V C30
1 0027277003 CAP MPF .082UF 100V C17
6 0027280003 CAP MPF .15UF 63V C616-C621
14 0027278003 CAP MPF .1UF 63V 10% C3 C6 C10 C29 C36-37 C106 C109-111
C113 C801 C804 C808
1 0027281003 CAP MPF .22UF 63V C112
4 0027283003 CAP MPF .33UF 63V C77-78 C614-615
1 0027286003 CAP MPF .47UF 63V C117
3 0024853000 CAP MPF RDL .1UF 250V 10% C118-120
5 0024854000 CAP MPF RDL .1UF 400V 10% C8 C9 C15 C21 C104
1 0024823000 CAP MPF RDL.01uf 400v 10% C22
6 0030937003 CAP PFF RDL .0027UF 50V 5% C628-633
11 0050514000 CONTROL SLIDER 30MM 50KW R607-616 R660
3 0027945000 CONTROL SNAPIN 100K B TAPER R113 R88 R98
1 0053926000 CONTROL SNAPIN 10K 5A 10K 5C R107
1 0053929000 CONTROL SNAPIN 10K B 250K B R25
2 0039053000 CONTROL SNAPIN 1M 30A R20 R47
1 0053928000 CONTROL SNAPIN 250K 30A TAPER R37
2 0031087000 CONTROL SNAPIN 25K 2B W/DETENT R67 R70
1 0027941000 CONTROL SNAPIN 50K B TAPER R116
15 0064089001 DIODE 1N4003 LL CR44-45 CR103-104 CR801-802
CR805-808 CR812-815 CR819
4 0026730001 DIODE 1n4006 800v LL CR92-95
72 0006260001 DIODE 1N4448 SIGNAL LL CR3-27 CR38-39 CR50-53 CR60 CR62-
85 CR87-88 CR96-100 CR601-603
CR803-804 CR809-810 CR816-817
4 0054209001 DIODE 1N5817 1A CR36-37 CR42-43
2 0029045000 DIODE 6A 400V 6A4 LEAD FORMED CR58-59
12 0025821001 DIODE HV FDH-400 SWITCHING LL CR28-35 CR46-47 CR54-55
2 0052050000 DIODE MUR1520 200PRV 15AMP CR56-57
1 0041261000 DIODE VOLT REF LM4040DIZ-10.0 U15
2 0009165001 DIODE ZEN 1n4744a 15v 1w 5% CR90-91
1 0027329001 DIODE ZEN 1n5228b 3.9v 5% LL CR86
4 0027327001 DIODE ZEN 1n5234b 6.2v 5% LL CR40-41 CR101-102
1 0029898001 DIODE ZEN 1N5236B 7.5V 5% CR89
5 0031635001 DIODE ZEN 1n5240b 10v 5% LL CR1-2 CR48-49 CR61
2 0038686001 DIODE ZEN IN4737A 7.5V.5W 5% CR811 CR818
11 0025802000 FSTN TAB MALE .250 x .032 PCB MT CP1-11
2 0025996000 FUSE CLIP PCB .250 5MM FUSE XF1
1 0053654000 GASKET HEATSINK 1200S
PRINTED CIRCUIT BOARD ASSEMBLY (CONT)
QTY PART # DESCRIPTION REFERENCE DESIGNATION
1 0027408000 HDR .1 CTR 2 CKT SQ PIN P9
2 0027410000 HDR .1 CTR 3 CKT SQ PIN P1 P5
2 0027416000 HDR .1 CTR 8 CKT SQ PIN P4 P8
1 0053864000 HEATSINK DRVR 1200S FRNT
1 0053865000 HEATSINK DRVR 1200S REAR
1 0053488000 HEATSINK MAIN SUNN 1200S
1 0053866000 HEATSINK RECTIFIER 1200S
2 0025796000 HEATSINK TO-220
17 0051198000 IC DUAL OP AMP BA4560N SIP U5-7 U11-13 U16-17 U19-20 U61-67
7 0016795000 IC DUAL OP AMP TL072 U1-4 U9-10 U14
1 0051680000 IC DYNAMIC RANGE PROCESSOR DUAL
VCA SSM2120
U8
1 0013562000 IC REGULATOR 15V MC7815CT U21
1 0013564000 IC REGULATOR 15V MC7915CT U22
1 0051856000 IC QUAD 2-IN NAND GATE 4011 U18
1 0027387000 INDUCTOR AIR CORE RDL 2.5UH L1
4 0017974000 INSULATOR MICA TO-220
20 0038815000 INSULATOR SILICONE TO-3P
1 0051006000 JACK 1/4 PCB DUAL TIP MONO J1
2 0051658000 JACK MONO R/A J2 J12
4 0029175000 JACK PHONE 1/4" HI CURRENT PC J8-11
4 0053450000 JACK STEREO RA J3-6
1 0049892000 JACK XLR MALE J7
4 0028039000 LED RED 5x5MM SLB-55VR3 LD3-5 LD61
2 0053951000 LED RED, T-1.75 Clr LD1-2
1 0033177000 LED RED/GREEN 5x5mm BI-COLOR LD6
10053616000 PCB MAIN SUNN 1200S
1 0036613000 RELAY DPDT DIP 24 VOLT 8.3mA K1
2 0026505001 RES CF 1/2W 5% 1 OHM LL R813 R819
3 0026368001 RES CF 1/2W 5% 100 OHM R3-5
4 0025116001 RES CF 1/2W 5% 100K R18 R23 R36 R44
4 0026493001 RES CF 1/2W 5% 2.7K LL R238 R244 R268 R675
3 0026512001 RES CF 1/2W 5% 3.9K LL R802 R809 R815
2 0025941001 RES CF 1/2w 5% 560 ohm LL R6 R292
4 0024967001 RES CF 1/4W 5% 1.2K R13 R22 R31 R637
2 0028862001 RES CF 1/4W 5% 1.3K R159-160
7 0024969001 RES CF 1/4W 5% 1.5K R43 R58 R155-156 R179-180 R229
2 0025073001 RES CF 1/4W 5% 1.5M R86 R96
2 0024937001 RES CF 1/4W 5% 10 OHM R230 R301

PRINTED CIRCUIT BOARD ASSEMBLY (CONT)
QTY PART # DESCRIPTION REFERENCE DESIGNATION
2 0024952001 RES CF 1/4W 5% 100 OHM R119 R130
18 0024997001 RES CF 1/4W 5% 100K R12 R16 R33-34 R56 R122 R133 R135-
136 R140 R196-197 R228 R277-279
R282 R668
61 0024981001 RES CF 1/4W 5% 10K R8 R10 R14 R24 R26 R28-29 R32 R38
R48 R50-51 R54 R60 R69 R72-74 R77
R79 R82-83 R89 R99 R106 R110 R115
R117-118 R120-121 R124-129 R131-
132 R137 R141 R157-158 R236 R241
R253 R265 R276 R285 R290 R601-606
R657-658 R664-665 R671
1 0024998001 RES CF 1/4W 5% 120K R21
3 0024983001 RES CF 1/4W 5% 12K R143 R188-189
2 0029539001 RES CF 1/4W 5% 13K R61-62
5 0024999001 RES CF 1/4W 5% 150K R41 R95 R251 R256 R271
4 0024985001 RES CF 1/4W 5% 15K R642 R647 R651 R656
2 0024986001 RES CF 1/4W 5% 18K R633 R638
11 0024965001 RES CF 1/4W 5% 1K R17 R93 R103 R151 R153 R646 R655
R803-804 R811 R817
18 0025069001 RES CF 1/4W 5% 1M R9 R15 R27 R30 R39 R59 R64 R94
R104 R139 R240 R246 R270 R274
R302-303 R670 R673
6 0024971001 RES CF 1/4W 5% 2.2K R235 R248 R257 R652 R810 R816
1 0025075001 RES CF 1/4W 5% 2.2M R289
5 0029455001 RES CF 1/4W 5% 2.4K R87 R97 R198-199 R634
1 0024942001 RES CF 1/4w 5% 22 ohm LL R806
6 0024956001 RES CF 1/4W 5% 220 OHM R90-91 R100-101 R123 R134
1 0025059001 RES CF 1/4W 5% 220K R19
18 0024987001 RES CF 1/4W 5% 22K R46 R52 R227 R242-243 R252 R261
R263-264 R266-267 R272 R286 R288
R661-662 R672 R674
2 0024988001 RES CF 1/4W 5% 27K R144-145
1 0029005001 RES CF 1/4W 5% 2K R643
7 0024973001 RES CF 1/4W 5% 3.3K R40 R617-618 R620 R622-623 R625
2 0026504001 RES CF 1/4W 5% 3.6K R65-66
4 0024975001 RES CF 1/4W 5% 3.9K R192-193 R628 R640
4 0028865001 RES CF 1/4W 5% 30K R639 R644 R648 R653
3 0025061001 RES CF 1/4W 5% 330K R49 R262 R275
3 0024989001 RES CF 1/4W 5% 33K R627 R630 R635
1 0024960001 RES CF 1/4w 5% 390 ohm R807
1 0025063001 RES CF 1/4W 5% 390K R53
7 0024991001 RES CF 1/4W 5% 39K R68 R80 R84 R105 R109 R186-187
4 0029610001 RES CF 1/4W 5% 3K R619 R621 R624 R626
1 0029472001 RES CF 1/4W 5% 4.3K R649
5 0024977001 RES CF 1/4W 5% 4.7K R55 R57 R142 R176 R631
1 0025079001 RES CF 1/4w 5% 4.7m LL R284
1 0029592001 RES CF 1/4w 5% 43 ohm LL R184
2 0029451001 RES CF 1/4w 5% 430 ohm LL R174-175
PRINTED CIRCUIT BOARD ASSEMBLY (CONT)
QTY PART # DESCRIPTION REFERENCE DESIGNATION
5 0024947001 RES CF 1/4W 5% 47 OHM R81 R85 R146 R194-195
9 0024961001 RES CF 1/4W 5% 470 OHM R1-R2 R204-207 R280 R287 R293
5 0025065001 RES CF 1/4W 5% 470K R7 R45 R233 R247 R669
14 0024993001 RES CF 1/4W 5% 47K R42 R71 R108 R111-112 R114 R147-
150 R152 R154 R163 R281
1 0028034001 RES CF 1/4W 5% 5.1K R291
5 0024978001 RES CF 1/4W 5% 5.6K R11 R35 R76 R659 R663
2 0025066001 RES CF 1/4w 5% 560k LL R258-259
4 0024994001 RES CF 1/4W 5% 56K R75 R78 R641 R650
1 0028948001 RES CF 1/4W 5% 6.2K R63
3 0024979001 RES CF 1/4W 5% 6.8K R237 R666-667
1 0029596001 RES CF 1/4W 5% 62 OHM R185
7 0024995001 RES CF 1/4W 5% 68K R92 R102 R138 R181 R234 R629 R632
2 0025942001 RES CF 1/4W 5% 7.5K R645 R654
1 0028153001 RES CF 1/4W 5% 75K R283
2 0029581001 RES CF 1/4W 5% 8.2 OHM R170-171
1 0024980001 RES CF 1/4W 5% 8.2K R636
2 0024964001 RES CF 1/4w 5% 820 ohm LL R172-173
4 0025068001 RES CF 1/4W 5% 820K R239 R245 R269 R273
1 0029613001 RES CF 1/4w 5% 91k LL R260
1 0027627001 RES FILM 1W 5% 10 OHM R224
2 0027348001 RES FILM 1W 5% 3.3K R202-203
1 0053946001 RES FILM 2W 5% 180K R297
3 0036921001 RES FILM 2W 5% 1k R805 R812 R818
2 0027628001 RES FILM 2W 5% 47 OHM R225-226
1 0041810001 RES FILM 2W 5% 6.8K R298
2 0036960001 RES FUSE MF 1/4w 5% 47ohm T/R R200-201
2 0015582001 RES MF 1/4w 1% 10k LL R250 R254
1 0016965001 RES MF 1/4w 1% 12.1k R249
1 0027632001 RES MF 1/4w 1% 2.43k LL R231
1 0036379001 RES MF 1/4w 1% 23.7k LL R255
1 0016961001 RES MF 1/4w 1% 6.81k LL R232
5 0051731001 RES MF FUSE 1/4W 5% 1K ohm T/R R161-162 R182-183 R304
2 0041738001 RES MOX 1W 15k 5% LL R190-191
1 0028022001 RES MOX 2W 120 OHM 5% R294
2 0031008001 RES MOX 2W 240 ohm 5% R295-296
2 0036470001 RES MOX FP 1W 5% 10K R299-300
2 0041741001 RES MOX FP1/2W 5% 47 ohm R164-165
8 0050815001 RES WW 3W 5% .05 OHM LL R220-223 R212-215
8 0050814000 RES WW BT 5W 10% .15 OHM R216-219 R208-211
2 0053921000 RES WW 5W 1.3kohm10 R168-169

PRINTED CIRCUIT BOARD ASSEMBLY (CONT)
QTY PART # DESCRIPTION REFERENCE DESIGNATION
3 0054207000 RES WW 5W 2.2ohm 10 R801 R808 R814
2 0053922000 RES WW 10W 470ohm10 R166-167
20 0032934000 SCRW TF 4-40x1/2 HIHS ZI @ Q16-17 Q21-38
17 0027638000 SCRW TF 4-40x3/8 HWHS ZI .1"HD @ U21-22 Q10-11 Q13 Q19-20 CR56-57
PLUS 8 @ HEATSINK
2 0028500000 SCRW TF 8-32x3/4 HWH SLTD Z1
1 0051411000 SPACER LED .4X.1 TURQUOISE @ LD61
4 0036178000 SPACER LED .5x.1 BRN @ LD3-5 LD6
1 0050817000 SWITCH PB PC VERT MNT DPDT S61
8 0028091000 SWITCH PUSH SLFLK SHORT STROKE S1-8
1 0053923003 THERMAL SENSOR PTC 80 DEG C RT2
1 0052051000 THERMISTOR, NTC 20 TH1
1 0051418003 THERMISTOR, PTC100 DEG C RT1
2 0029167000 TUBE SOCKET 9 PIN PCB MOUNT
20 0032937000 WSHR CONE
4 0017746000 WSHR SHLDR NYL 1/8x1/4
1 0027325000 XFMR LINE OUTPUT T1
10 0054418000 XISTOR NPN 2SC3263 Q16 Q21 Q23-30
10 0054417000 XISTOR PNP 2SA1294 Q17 Q22 Q31-38
10 0041465003 XSTR N-CH JFET J113 TO-92 Q1-7 Q46 Q61-62
1 0016739003 XSTR NPN 2N4401 TO-92 Q45
1 0025751003 XSTR NPN 2SC2362K/2SC2389STPS Q8
3 0028760000 XSTR NPN 2SC4793/2SC3298B Q11 Q18-19
4 0051448003 XSTR NPN 2SD1857 Q12 Q14 Q82 Q86
1 0028164000 XSTR NPN MJE15030 Q88
2 0014867003 XSTR NPN MPSW42 (TO-92) Q83 Q87
7 0016742003 XSTR PNP 2N4403 TO-92 Q39 Q41-44 Q63 Q84
2 0025752003 XSTR PNP 2SA1038STPS Q9 Q40
3 0028759000 XSTR PNP 2SA1837 TOP-220 Q10 Q13 Q20
2 0051447003 XSTR PNP 2SB1236 Q15 Q89
2 0028166000 XSTR PNP MJE15031 Q81 Q85
1 0014866003 XSTR PNP MPSW92 TO-226AE Q90
CHASSIS ASSEMBLY
QTY PART # DESCRIPTION REFERENCE DESIGNATION
1 025905 BUSHING SR .875x.125x3/4 7-K-2 230V/240V UNITS
1 025907 BUSHING SR .875x.125x3/4 7-W-2 120V/100V UNITS
1 040994 CABLE ASSY PWR 10A U.K..250TAB 230V UK
1 048912 CABLE ASSY PWR 14GA 120V .250 120V
1 026622 CABLE ASSY PWR 14GA 230V .250 230V
1 038602 CABLE ASSY PWR AUST .250 TAB 240V AUST
1051651 CHASSIS TOP SUNN 1200S
1051649 CHASSIS WRAP SUNN 1200S
1 053911 COOLING FAN, DC 24V
2 049650 CORD WRAP STYLE 2
1 020802 FUSE QA 20mmx5mm 250v 10A 230V/240V VERSIONS
1 032030 FUSE TD 1-1/4x1/4 250v 20A 120V/100V VERSIONS
11 019798 KNOB ROTARY SS
1 053439 LEXAN LAMP SHADE
1 069393 NUT 6-32 HEX EXT LOCK GND SCREW
5 016352 NUT HEX 3/8-32x3/32 TK NI AT 1/4" JACKS
1 028272 NUT KEP 1/4x20 FOJ FOR XFORMER
4 022004 NUT KEPS #8-32 ZINC FAN MOUNT
1053912 PCB ASSY SUNN 1200S
2 051652 RACK EAR SUNN 1200S
1 053910 SCREW M 1/4-20 x 3" CAR BLX FOR XFORMER
2 037623 SCREW TC25 6 x 1/2" PHP ZI @ CORD WRAPS
6 026501 SCRW C 1/4-20x1/2 HH BLK RACK EARS TO CHASSIS
4 033051 SCRW M 6-32x1/2 PHP ZI LW MAIN HS TO STDOFFS
4 033051 SCRW M 6-32x1/2 PHP ZI LW H.S. TO STDOFF
10 014999 SCRW M 6-32x1/4 PHP BLX EQ PCB AND PCB STDOFF
1 9904101500 SCRW M 6-32x3/8 PHPS BLX ITLW GND SCREW
4 069385 SCRW M 6-32x5/8 PHP ZI EQ PCB to STDOFF
4 029656 SCRW M 8-32x3/8 PHP BLX SEM/LW FAN MOUNT
10 031184 SCRW M6-32x1/4 PHPS BLX ITLW MAIN PCB TO CHASSIS
2 051155 SCRW SMB #4X3/8 PHP BLX @ XLR jack
19 028684 SCRW SMB 6x3/8 PH PHS BLX @ CHASSIS PANELS
10 031073 STANDOFF 6-32x3/8 RND AL MAIN PCB TO CHASSIS
4 053931 STANDOFF 6-32x9/16 RND AL
4 037783 STANDOFF NYL PCB SNAP 1/4" NAT EQ SANDWICH
4 053952 STANDOFF, NYLON BLACK .250"
040582 SWITCH DPST .250 TAB GLOBAL EXPORT
1 039236 SWITCH ROCKER DPST PSEUDO-IEC DOMESTIC

CHASSIS ASSEMBLY (CONT)
QTY PART # DESCRIPTION REFERENCE DESIGNATION
2 013341 TUBE 7025/12AX7WA RUSSIAN MADE 12AX7A
1 9904300900 WASHER FLAT 1/4X1 STL BLX FOR XFORMER
4 027520 WSHR FLAT .380x.630 FIBER AT SPEAKER JACKS
5 031153 WSHR FLAT 3/8x.614 NI AT 1/4" JACKS
1 016436 WSHR LCK INTL 3/8x.687x.035 NI AT 1/4" INPUT JACK
4 026401 WSHR SHLDR FIBER 3/8x5/8 AT SPEAKER JACKS
6 022285 WSHR SP LOCK 1/4x.493 ZI RACK EARS TO CHASSIS
1 053909 XFRMR POWER TOROIDAL 100V 1200H 100V
1 053908 XFRMR POWER TOROIDAL 230V 1200H 230V/240V
1 050855 XFRMR POWER TOROIDAL DOMESTIC
1200H
120V
END ITEM
QTY PART # DESCRIPTION REFERENCE DESIGNATION
1053899 CHASSIS ASSY SUNN 1200S 120V
1053900 CHASSIS ASSY SUNN 1200S 240V AUST
1053901 CHASSIS ASSY SUNN 1200S 230V UK
1053902 CHASSIS ASSY SUNN 1200S 230V
1053903 CHASSIS ASSY SUNN 1200S 100V
1 053895 FOOTSWITCH 3 BUTTON SUNN BASS
PARTS LIST
FOOTSWITCH END ITEM
QTY PART # DESCRIPTION REFERENCE DESIGNATION
1053897 PCB ASSY FTSW 3 BTN SUNN BASS
1053896 PLATE FTSW 3 BTN SUNN BASS
1 028895 CABLE ASSY FTSW RT ANG 12'
1 028109 HSG END CUP LEFT FTSW
1 028143 HSG END CUP RIGHT FTSW
1 028141 HSG FTSW 3 BUTTON
1 031647 NUT HEX 12mmx1mm Nl
8 028684 SCRW SMB 6x3/8 PH PHS BLX
3 031899 WSHR NYL .485x.775x.150 TK
FOOTSWITCH PCB ASSEMBLY
QTY PART # DESCRIPTION REFERENCE DESIGNATION
1053898 PCB FAB FTSW 3 BTN SUNN BASS
2 000626 DIODE 1N4448 SIGNAL LL
1 031017 DIODE ZEN 1N5223B 2.7V 5%
2 027327 DIODE ZEN 1N5234B 6.2V
3 028039 LED RED 5x5MM SLB-55VR3
1 037036 JACK PHONE PCB MONO CA PREMIUM
3 041527 SPACER RND NYL .680x.250x.147
3 028714 SWITCH PUSH SPDT