Summary of AKF-8846
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S e rvice manual car audio model: a k f - 8 8 4 6 / 8 8 4 7 daewoo electronics co., lt d ..
Page 2: Table of Contents
Table of contents 1 1. Product specificat i o n s 1 1 2. Line draw i n g 2 1 3. Panel informat i o n 3, 4 1 4. Electrical specificat i o n 5 ~ 7 1 5. Micom pin configulation & descriptions 8 ~ 1 0 1 6. Ic block diagram & terminal vo ltag e 1 1 ~ 1 4 1 7. Pcb pattern diag r a m 1 5 ~ 1 6 1 8. Overall...
Page 3: 1. Product Specifications
1 1. Product specifications general specificat i o n a k f - 8 8 4 6 a k f - 8 8 4 7 p ower requ i r e m e n t - ground system : negative gro u n d n e g ative gro u n d - operating vo ltag e : 14.4v dc speaker impeda n c e : 4 ohm (4 speaker) 4 ohm (4 speaker) max output pow e r (4 ohm) : 25w x 4ch...
Page 4: 2. Line Drawing
2 2. Line drawing rear side 1 f ront right sp(+) 2 rear right sp(+) 3 ill. Dim(+b) 4 acc b+ 5 b ack up b+ 6 - - - 7 rear left sp (+) 8 f ront left sp (+) 9 f ront right sp (-) 1 0 rear right sp (-) 1 1 ill. Control vo lt ( + v ~ g n d ) 1 2 au to ant. B+ 1 3 - - - 1 4 n e g ative gro u n d 1 5 - - -...
Page 5: 3. Panel Information
3 3. Panel information f ront pa n e l d i s p l ay (akf-8846) tape eject button power/sound control button vol/bass/treble fader/balance select button tuning up/down buttons band(fm/am) selection button scan select button preset station buttons (no.1~6) security warning led *option* fast forward/re...
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4 d i s p l ay (akf-8847) fm stereo on i n d i c a t o r low broadcasting i n d i c a t o r preset button number metal tape select indicator scan select i n d i c a t o r dolby select i n d i c a t o r fm, mw, lw band i n d i c a t o r radio frequency/tape play indicator ast select indicator v o l /...
Page 7: 4. Electrical Specification
5 4. Electrical specification 4-1. Fm section n o. I t e m test condition u n i t n o m i n a l l i m i t 1 usable sensitivity 90.1 mhz d b µ 5 ≤ 1 0 (s/n 30 db) 98.1 mhz d b u 5 ≤ 1 0 106.1 mhz d b u 5 ≤ 10 2 s/n rat i o 98.1 mhz d b u 5 5 ≥ 5 0 3 if rejection rat i o 90.1 mhz d b µ 8 0 ≥ 6 5 4 mut...
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6 4-2. Am specificat i o n n o. I t e m u n i t n o m i n a l l i m i t 1 mw frequency tunning range k hz 5 3 1 - 1 6 0 2 5 3 1 - 1 6 0 2 usable sens 603 khz 2 4 3 0 ( 3 3 ) 2 (s/n 20 db ) 999 khz d b u 2 4 3 0 ( 3 3 ) 1404 khz 2 4 3 0 ( 3 3 ) 3 mw s/n rat i o 999 khz d b 5 3 ≥ 4 5 4 if rejection ra...
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7 4-3. Tape & audio section n o. I t e m test condition u n i t n o m i n a l l i m i t 1 wow & flutter m t t- 1 1 1 % 0 . 1 5 ≤ 0 . 3 5 (3,000hz, din. Wtd. ) 2 tape speed erro r m t t- 1 1 1 % + 1 . 0 - 1 . 0 , + 3 . 0 (3,000hz, din. Wtd. ) 3 s/n rat i o m t t- 1 1 2 b d b 5 0 ≥ 4 5 4 t. H . D. M t...
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8 5. Micom pin configuration & descriptions 5-1. Pin configurations (ic305).
Page 11: 5-2. P O Rt Description
9 5-2. P o rt description pin assign name i/o 25 p_xin xin i 24 p_xout xout o 1 3 p_pump e0 o 26 p_gnd gnd 58 p_gnd gnd 1 4 p_vdd vdd1 1 8 p_vdd vdd2 1 6 p_fmvco vcoh i 1 5 p_amvco vcol i 12 p_fmif p1b3/fmifc i 13 p_amif p1b2/amifc i 1 7 p_acc ce i 29 p_ifreq p0c1/pwm1 o 17 p_pmute p0b2/fcg0 o 18 p_...
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1 0 pin assign name i/o 30 p_wled p0c0/pwm0 o 33 p_tpin p1d1 i 15 p_fwdin p1b0/adc0 i 34 p_ffin p1d0 i 20 p_dolby p1c3 o 10 p_evr so p0a1/so1 o 9 p_evr clk p0a2/sck1 o 11 p_evr ce p0a0/si1 o 1 p_rpulr p1a1 i 2 p_rpull p1a0 i 63 p_rpuls p1a2 i 37 p_com0 com0 o 36 p_com1 com1 o 35 p_com2 com2 o 62 p_s...
Page 13: Ic 301 (La3161)
1 1 6. Ic block diagram & terminal voltage ic 301 (la3161) pin no. Pin name description i/o voltage 1 input r-ch input o 1.3v 2 n.F n. Feed back 0.7v 3 output r-ch output o 2.9v 4 vcc vcc i 10.5v 5 gnd ground 0v 6 output l-ch output o 2.9v 7 n.F n. Feed back 0.7v 8 input l-ch input i 1.3v.
Page 14: Ic 302 (Ha12135Af)
1 2 ic 302 (ha12135af) pin no. Pin name description i/o voltage 1, 16 rec in recoding input i 5.5v 2 vcc power i 11v 3, 14 pb in playback input i 5.5v 4 vref beeference voltage 5.3v 5 nr on/off nr on/off mode control i 4.6v/0.4v 6, 11 pb out playback output o 5.4v 7, 10 det time constant pin for the...
Page 15: Ic 303 (Lc75372E)
1 3 ic 303 (lc75372e) pin no. Pin name voltage 1, 33 l/r t3 4.3v 2, 32 l/r t2 4.3v 3, 31 l/r t1 4.3v 4, 30 l/r in 4.3v 5, 29 l/r 10db out 4.3v 6, 28 l/r ct2 4.3v 7, 27 l/r ct1 0.3v 8, 26 l/r 10db in 4.3v 9, 25 l/r selo 4.3v 10, 24 l3/r3 4.3v 11, 23 n.C 0 36, 42 l/r fout 4.3v 37, 41 l/r rout 4.3v pin...
Page 16: Ic 304 (Ha13158)
1 4 ic 304 (ha13158) pin no. Pin name voltage 1, 11 f/r l-in 0 12, 23 f/r r-in 0 2 stby 3.3 10 mute 4v 6 vcc 14.4v 14, 18 vcc 14.4v 12 sgnd 0 pin no. Pin name voltage 22 vref 6.5v 4, 8 pgnd 0 16, 20 pgnd 0 3, 5 fl-out 6.5v 7, 9 rl-out 6.5v 15, 17 rr-out 6.5v 19, 21 fr-out 6.5v n o t e : 1. Standby p...
Page 17: 7. Pcb Pattern Diagram
1 5 7. Pcb pattern diagram 7-1. Pcb main (pa rt’s side, to p ) 7-2. Pcb front (pa rt's side, to p ).
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1 6 7-3. Pcb front (pa rt's side, bot to m ).
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8. Overall exploded view & parts list.
Page 21: 9. Electrical Parts List
1 8 9. Electrical parts list 9-1. Assy main pcb l o c at i o n c o d e d e s c r i p t i o n r e m a r k c e 3 4 2 , 3 4 3 c c x e 1 c 3 3 2 e s d 1 6 v 3 3 0 0 u f c n 3 0 1 9 7 t 8 8 5 7 1 0 0 e 7 p 2 0 ( b ) 7 0 m 7 p 2 0 ( h ) c w 3 0 1 9 7 t 6 2 2 8 8 0 0 18p wa f e r c w 3 0 2 8 7 t 8 8 5 7 2 ...
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1 9 l o c at i o n c o d e d e s c r i p t i o n r e m a r k cc111, 326, 117, 327 c c k f 1 e 2 2 3 e hikf 25v 0.022µf z cc107, 116, 104, 325 cc115, 308 cc110, 319, 320 c c k b 1 h 1 0 1 k hikb 50v 100p k cc106, 105, 330 c c k b 1 h 1 0 2 k hikb 50v 1000p k cc329, 109 cc112, 113 c k c h 1 h 1 5 0 j ...
Page 23: 9-2. Assy Front Pcb
2 0 9-2. Assy front pcb 9-3. Assy deck l o c at i o n c o d e d e s c r i p t i o n r e m a r k d l 5 0 1 ~ 5 1 2 d s m l 2 1 0 m t- s m l - 2 1 0 m t d l 5 1 3 d s l c 2 2 v r - - s l c - 2 2 v r s e c u r i t y p l 5 0 1 ~ 5 0 5 9 7 t 8 2 l 2 w e 6 14v 60ma d3.0 0.2c p l 5 0 1 ~ 5 1 2 5 s 5 0 1 0 ...
Page 24: 10. Circuit Diagram
10. Circuit diagram.
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Da e woo electronics co., lt d. 686, ahyeon-dong mapo-gu seoul, korea c.P.O. Box 8003 seoul, korea telex: dwelec k28177-8 cable: “daewooelec” fax: 02) 360-8184 tel: 02) 360-8182/8178~9 http://www.Dwe.Daewoo.Co.Kr printed date: may 1999 s/m no. : 97t9515600