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Contents front panel/rear panel view 3 specifications 4 alignment procedure/alignment points 5-6 wiring diagram 7 schematic diagram 8-15 pcb layout 16-23 electrical parts list 24-37 exploded view 38 exploded view parts list 39 packing diagram 40 service safety precautions 1. Replacing the fuses caut...
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- 4 - specifications continuous average power 140 w (21.5 dbw) output into 8 ohms or 4 ohms (min. Power per channel, 20 hz – 20 khz, both channels driven, with no more than rated distortion) rated distortion 0.03% (thd 20 hz – 20 khz) clipping power 170 w(22.3 dbw) (maximum continuous power per chan...
Alignment procedure (t975) a. Thermal sense adjustment this adjustment should be always done when the t975 is in a cool condition. (that means the temperature inside the unit should be almost same as the ambient temperature.) connector p208b that connects the transformer and power board should be re...
For example; all 7 channels at 50w/4 ohms for 10 minutes or 5 minutes or even less (as long as the fan can starts turning). Turn off the signal but still keep the unit operating for 1 minute. Then run all 7 channels at 1khz, 0.25w at 4 ohms load, monitor the voltage at tp1 j201. Adjust rv201 to get ...
Agnd +62v +62v -62v -62v agnd agnd agnd isctrig ac off sen protect -68v +68v -18v +18v sc pnp sc npn agnd +62v +62v -62v -62v agnd agnd agnd isctrig ac off sen protect -68v +68v -18v +18v sc pnp sc npn agnd +62v +62v -62v -62v agnd agnd agnd isctrig ac off sen protect -68v +68v -18v +18v sc pnp sc n...
Input offset isctrig +62v sen 62v testpoint 5 +12v -12v +12v -12v +12v -12v -12v offset +62v sen isc 62v input tp5 sc npn sc pnp /1kv /1/2w /1% temp sen all polyester capacitors are 63v unless noted. All elec. Capacitors are 50v unless noted. All resistor are 1/6w rj13 unless noted. /1kv /1kv /1kv /...
+62v -62v +68v isctrig agnd sc npn output output ac off agnd -62v agnd ac off sc pnp -62v sen -18v -68v protect -68v +62v +18v offset protect isctrig tp2 sen offset agnd sc npn sc pnp agnd testpoint5 testpoint5 sen agnd agnd -18v -18v +68v tp1 tp2 tp1 +68v agnd +18v ac off -62v -68v -18v protect +62...
Sen5 sen3 sen1 sen2 sen3 sen7 fan1 fan1 sen6 sen4 sen5 prot3 -70v fan1 sen2 dgnd scled stby agnd4 fan2 sen5 +18v +70v isctrig_6 isctrig_7 isctrig_3 sen7 agnd4 -18v acoff agnd6 +8v sen3 -62v_3 agnd6 -62v_4 agnd4 fan3 sen6 scled isctrig_4 prot4 +8v dgnd dgnd prot7 isctrig_1 prot2 +62v_4 -62v_4 agnd4 d...
Prot1 +12vd s c le d stbyled +12vd p r o t2 p r o t3 p r o t4 p r o t1 p r o t5 p r o t6 p r o t7 prot3 prot2 prot4 +5vd prot6 prot5 scled prot7 dgnd stbyled green stbyled +5vd /1/2w ch2 led ch3 led ch4 led ch5 led ch6 led ch7 led ch1 led all polyester capacitors are 63v unless noted. All elec. Capa...
-62v_4 stby -62v_3 dgnd dgnd dgnd dgnd scp_4 +62v_3 scled +62v_4 +8v +8v dgnd scled scn_4 scp_3 scn_3 +62v_3 -62v_3 scp_4 -62v_4 +62v_4 stby scp_3 scn_4 scn_3 scn_3 scp_4 dgnd stby scp_3 +62v_3 +8v -62v_3 scled +62v_4 -62v_4 scn_4 /1% /1% /1% /1% /1% /1% /1% /1% /1% /1% /1% /1% /1/2w /1/2w /1/2w /1/...
7v w505 only for c version 0v w503&w504 only for ah version only used for c version only used for ah version neutral live from power supply board from main transformer to main transformer power switch board f1 (user accessible fuse) t975 120v/230v table w501&w505 230v 120v no insert insert t20al/250...
Agnd4 -62v_4 +62v_4 agnd4 +62v_4 agnd4 -62v_4 agnd4 prot6 dgnd stby dgnd prot3 scled prot4 prot7 scled prot5 +8v prot1 prot2 stby agnd +8v -68v +68v dgnd agnd acoff +18v fan2 -18v fan3 fan1 +8v agnd6 +62v_3 agnd6 -62v_3 agnd6 +62v_3 dgnd scled scn_3 scn_4 scp_4 +62v_3 scp_3 -62v_3 -62v_4 +62v_4 -68v...
Tp902 115deg thermal circuit breaker tp902 115deg thermal circuit breaker 1 2 j901 2pin2.54-c j901 2pin2.54-c 1 2 tp901 115deg thermal circuit breaker tp901 115deg thermal circuit breaker 1 2 tp904 115deg thermal circuit breaker tp904 115deg thermal circuit breaker 1 2 tp903 115deg thermal circuit b...
C1 g 1 j102 j101 rl101 rv 101 attention: t975 vm1.0 2006/05/18 utiliser un fusible de rechange de meme type! Q14 0 q13 9 r10f c125 r10e rv103 r 10t r 1 0 k r1e2 solder r10h q127 amp board - solder side continued protection against risk of fire replace only with same type fuse and rating! Caution: r1...
P202a p201a nad 2006/05/18 f203&f204 is t1.25al/250v c210 f203 t975 seven channel amplifier q207 prot5 c257 c256 r2a3 p205b sen 5 r2 a 2 c275 psu board - solder side hs214 d 224 g2g1 ac in gn d curre nt ac o u t br208 +5 v d re l a y ~ ~ c255 c227 c228 ic 206 c 280 r2 e 9 r 215 c281 r 214 c 262 r213...
Softclipping protect led board - solder side t975 softclipping protect led board 317 softclipping protect led board - component side 325 r348 331r346 c301 r3 1 7 r 324 r345 329 r301 301r315 r322 r302 r309 r303 303 p 301a soft cli ppi ng r350 p 302a 332 d 309 d3 1 0 r 344 330 r 316 315 309 r330 r331 ...
C401 r410 r406 r402 trig board - solder side trig board - component side vm1.0 2006/05/18 t975 softclipping trig board c403 p401b r403 r411 r407 d403 r401 r405 d401 r409 s402 r413 d404 r412 r408 c404 s401 r404 s401 401 c402 d402 1 - 19 - pcb layout.
P621b p 611b p 612b p 613b 1 p 604b 9 1 1 1 1 p 606b 9 9 p 605b 1 9 9 1 9 p 614b p 615b 1 9 p 607b 1 scled p 608b stby dgnd 1 8v 1 9 1 scn 4 62v 3 -62v 3 62v 4 -62v 4 scn 3 scp 3 p 618b scp 4 12 p622 1 2 9 fa n 2 dg nd 2 fa n 1 dg nd 9 p 616b p 617b 1 1 p 610b 9 1 9 p 609b 1 2 fa n 3 dg nd 9 9 1 p62...
T975 power led board power led board v m 1.0 200 6/05 /18 d701 p701a 1 - 21 - pcb layout.
T975 switch board switch board vm1.0 2006/05/18 1 p801a s801 1 - 22 - pcb layout.
Tp board t p 901 901 t9 7 5 tp b o a r d v m 1. 0 2 00 6 /0 5 /1 8 t p 902 t p 904 t p 903 - 23 - pcb layout.
Electrical parts list designator description part type part number footprint ah p/n 01-97501-10 c p/n 01-97501-20 pcb1 board (amp) - 24 - diode d101 switch diode 1n4148 33-44148-00 dax/.300x.080/.031 d102 switch diode 1n4148 33-44148-00 dax/.300x.080/.031 d108 switch diode 1n4148 33-44148-00 dax/.30...
Electrical parts list designator description part type part number footprint q157 transistor 2sc2240-gr 31-02240-00 to92/100/ecb q158 transistor 2sa970-gr 31-00970-00 to92/100/ecb q159 transistor 2sc2362 31-02362-00 to92/100/ecb q159 transistor 2sc2240-gr 31-02240-00 to92/100/ecb q160 transistor 2sc...
Electrical parts list designator description part type part number footprint r160 metal oxide film resistor 2.7Ω, 2w , 5% 07-30279-02 ax/.800x.200/.037 r167 metal film resistor 220kΩ, 1/6w , 5% 07-20224-50 ax/.200x.080/.031 r168 metal film resistor 100kΩ, 1/6w , 5% 07-20104-50 ax/.200x.080/.031 r170...
Electrical parts list designator description part type part number footprint r10v metal film resistor 100kΩ, 1/6w , 5% 07-20104-50 ax/.200x.080/.031 capactior c102 polyester capacitor 100nf, 10%, 63v 25-10461-00 rad/.300x.150/ls.200/.035 c103 alu electrolytic capacitor 100uf/25v, 20%, 105 06-10121-0...
Electrical parts list designator description part type part number footprint l101 inductor 0.7uh, horizontal type 08-01079-01 rad/.850x.450/ls.700/.059 relay rl101 relays jqx-115f/024/1hs1 12-03101-03 relay_1 pot rv101 pot 5k, rk09k1110482-5ka 09-01502-00 vpot1 rv102 semi pot 300Ω, vertical type 09-...
Electrical parts list designator description part type part number footprint br206 bridge kbj2506 33-32562-00 bridge/1.180x.180/.087 br207 bridge kbj2506 33-32562-00 bridge/1.180x.180/.087 br208 bridge db104g 33-30142-00 bridge/.400x.500/.051 transistor q201 transistor ksa1220aystu 31-01220-00 to126...
Electrical parts list designator description part type part number footprint r214 metal film resistor 1k8Ω, 1/6w , 5% 07-20182-50 ax/.200x.080/.031 r215 metal film resistor 1k8Ω, 1/6w , 5% 07-20182-50 ax/.200x.080/.031 r216 metal film resistor 1k8Ω, 1/6w , 5% 07-20182-50 ax/.200x.080/.031 r217 metal...
Electrical parts list designator description part type part number footprint r284 metal film resistor 10kΩ, 1/6w , 5% 07-20103-50 ax/.200x.080/.031 r285 metal film resistor 10kΩ, 1/6w , 5% 07-20103-50 ax/.200x.080/.031 r286 metal film resistor 10kΩ, 1/6w , 5% 07-20103-50 ax/.200x.080/.031 r287 metal...
Electrical parts list designator description part type part number footprint c223 polyester capacitor 10nf, 10%, 250v 25-10322-01 rad/.300x.150/ls.200/.036 c224 alu electrolytic capacitor 1000uf/80v, 20%, 105 06-10281-01 cpcyl1/d.900/ls.400/.062 c225 alu electrolytic capacitor 1000uf/80v, 20%, 105 0...
Electrical parts list designator description part type part number footprint p205b connector molex 52807 right angle/non-zif/top contact style/16pin fpc1.0-16p) 13-21016-02 blkcon.100/vh/tm2sqb/w .300/1 6 p206b housing 12pin2.0-c 13-22012-00 blkcon.100/vh/tm1sq/w .200/12 p207a connector ribbon 6p2.0...
Electrical parts list designator description part type part number footprint q316 transistor 2sc1815-gr 31-01815-00 to92/100/ecb q317 transistor 2sc1815-gr 31-01815-00 to92/100/ecb q318 transistor 2sc1815-gr 31-01815-00 to92/100/ecb q319 transistor 2sc1815-gr 31-01815-00 to92/100/ecb q320 transistor...
Electrical parts list designator description part type part number footprint d401 zener diode 24v, 1/2w 33-12400-00 dax/.300x.080/.031 d402 zener diode 24v, 1/2w 33-12400-00 dax/.300x.080/.031 d403 zener diode 24v, 1/2w 33-12400-00 dax/.300x.080/.031 d404 zener diode 24v, 1/2w 33-12400-00 dax/.300x....
Electrical parts list designator description part type part number footprint p602b connector molex 52207 right angle/smt/zif/top contact style/16pin 13-21016-01 p603b connector s10b-ph-sm3-tb 13-22010-01 p604b connector molex 2145/3215 top entry/9pin 13-25009-00 p605b connector molex 2145/3215 top e...
Electrical parts list designator description part type part number footprint transformer 18-97132-01 connector connector ribbon one terminal:kst fdfd2- 187(8), another terminal kst fdfd2-250, wire:16aw g,double- insulated,white,300v,105c 1672 , l=600mm 14-97301-00 connector ribbon one terminal:kst f...
) 6 ) 6 ) 6 6 6 35 ) 6 ) ) 3 6 & 6 3 6 3 6 6 & 6 & 6 & 6 6 6 & & & & 6 & & & $ 6 6 6 6 $ 6 $ $ $ $ $ 6 6 6 $ 6 $ $ & 6 6 6 6 5 5 6 5 6 5 5 6 6 5 75 75 6 75 75 6 7 6 & 6 6 3 3 3 3 3 3 3 6 3 6 6 6 6 ) ) ) ) 6 6 3 ) & & 6 & & 6 6 & & & & & 6 6 6 6 3 3 ) 6 & 6.
R e f .No p ar t no. De s c r ip tion qty. R e f .No p ar t no. De s c r ip tion qty. C 001 66-075002-0 c hassis 1 r 002 11-05202-10 s witch 1 c 002 66-010006-0 b racket1 1 r 003 11-05402-10 s witch 1 c 003 01-97506-00 c onnection b oard 1 r 004 13-22012-00 housing 1 c 004 66-010008-0 b racket3 2 r ...
- 40 - packing diagram.