A ag g--779 90 0 service manual am/fm stereo receiver effective : april, 2003 s-0092a notes ● pc boards shown are viewed from parts side. ● the parts with no reference number or no parts number in the exploded views are not supplied. ● as regards the resistors and capacitors, refer to the circuit di...
1 specifications −2− amplifier section output power....100 + 100 watts rms (0.9 % thd, 1 khz, 8 ohms) total harmonic distortion.................... 0.05 % (at 70 watts,1 khz) input sensitivity/impedance .................. Phono: 5 mv/22 kohms line: 300 mv/22 kohms frequency response ...................
2 adjustments and checks −3− 2-1 amplifier section bias current adjustment 1. Turn the unit on, and set the input selector switch to "cd". 2. Set 7vr1 and 7vr2 to the center position. 3. Connect the dc voltmeter as shown below after preheating for 10 minutes, and adjust 7vr2 (lch) so that the voltag...
−4− item setting adjustment points adjust 2. Am sensitivity ∫ 600 khz/1500 khz 50 db/m 400 hz (30 % mod) ç rec out am 600 khz 2t1 (blk) max. 3. Am if ∫ 1000 khz 50 db/m 400 hz (30 % mod) ç rec out am 1000 khz 2t3 (wht) max. 4. Fm sensitivity ∂ 90 mhz 10~20 dbf 1 khz (100 % mod) ƒ rec out fm 90 mhz 2...
−5− ac voltmeter fm signal generator stereo signal generator distortion analyzer d e g f ac voltmeter am signal generator b c am loop antenna 60cm 2t3 2t6 2t5 2t2 2t1 2t4 2l2 2l3 2tc2 2r19 2j2 tuner pcb + − dc voltmeter a.
3 exploded views and parts list −6−.
−7− exploded view list ref.No. Parts no. Description remarks 1 9a09760000 tone key 530503500 2 9a09759900 tuning key 530503300 3 9a09759800 function key 530503400 4 9a09760200 volume knob 530503600 5 9a09759700 display lens 510503800 6 9a09759600 panel 510503700 7 9a09760100 power knob 530503200 8 £...
−8− 4 pc boards and parts list main pcb.
−9− sp jack pcb sp sel pcb headphone pcb power pcb front pcb tuner pcb.
Main pcb assy ref.No. Parts no. Description 9a09752260 main pcb assy 9a09752300 main pcb 9a06896100 fuse clip 9a09754600 rca jack,rca602 9a09754700 rca jack,rca402 9a09754800 wafer,3p 9a09754900 wafer,5p 1c1 £ 9a09586700 c,elec 35v 100uf m 1c4-5 £ 9a09586600 c,elec 25v 2200uf m 1c12 £ 9a09586500 c,e...
Headphone pcb assy ref.No. Parts no. Description 9a09758160 headphone pcb assy 9a09758200 headphone pcb 9a09758500 headphone jack holder 7d11-12 9a09589500 diode,in4148 7k1 9a06535000 head phone jack 7r75-76 £ 9a09758300 r,2w 470 j sp sel pcb assy ref.No. Parts no. Description 9a09758660 sp sel pcb ...
4 5 2 3 1 c b a schematic diagram ag-790 main pcb (1/2) 1 st issue; march 2003 4c16 22 4c15 22 +9v 1i/ o 1 1o /i 2 2o /i 3 2i/ o 4 2c 5 3c 6 vss 7 3i/ o 8 3o /i 9 4o /i 10 4i/ o 11 4c 12 1c 13 vdd 14 3n2 cd4066 1 2 3 4 1xs5 1 2 3 1xs6 3c34 104 3c32 152 3c28 103 3c26 473 3c38 4u7/50v 3c36 47u/16v 3c3...
4 5 2 3 1 c b a schematic diagram ag-790 main pcb (2/2), headphone pcb, sp sel pcb, sp jack pcb, power pcb 7c31 10p 7c30 10p s2 7r78 10/2w 7r77 10/2w 7v25 5401 s1 pow e r sw c1 103/ 250v fu2 6.3a/250v 1c15 6800u /70v 1r3 15k 1c14 6800u /70v 1r2 15k 1d10 1n5404 1d11 1n5404 1d12 1n5404 1d9 1n5404 7c22...
4 5 2 3 1 c b a schematic diagram ag-790 tuner pcb 1 2 3 4 1xs14 2l3 3.5t 2l2 4.5t 2x1 2t5 2c5 152 *2r12 1k 2c37 100u /10v 2c28 203 2l4 102 2c20 203 2d1 in4148 2l5 221 2c43 203 2c38 100u/10v 1 2 1xs13 2c45 203 2c24 102 2r20 2k 2r21 2k 2r22 2k 2g4 4.5m 2r23 2k4 2c41 30 2c42 30 2c44 103 2r17 1k 2c40 3...
4 5 2 3 1 c b a schematic diagram ag-790 front pcb instructions for service personnel before returning appliance to the customer, make leakage- current or resistance measurements to determine that exposed parts are acceptably insulated from the supply circuit. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 ...
