STEREO DOUBLE CASSETTE DECK CT-405 KXF-W4030/W4030-S/W4030E SERVICE MANUAL © 2000-3/B51-5604-00 (K/K) 3037 TAPE A AUTO REVERSE TAPE B AUTO REVERSE POWER PHONES TIMER PLAY REC OFF PLAY MODE REC LEVEL/BAL /BIAS - ON – OFF 1 2 3 7 ¡ 1 ¡ 8PAUSE ¶REC/ARM 0 2 3 7 RESET A MIN/L MAX/R DOLBY NR REV.MODE NORM.DUBB HIGH DUBB MPX FILTER CCRS AUTO BIAS RESET B 0 PLAYBACK RECORDING PLAYBACK LINE IN REC PLAY LINE OUT SYSTEM CONTROL L R Knob(POWER) * (K27-) Cassette door ass'y * (A53-) Display window (B03-3870-08) AC power cord * (E30-) RCA jack (E63-1076-08) Phone jack (E11-0918-08) Front panel ass'y * (A60-) Control button * (K27-) Metallic cabinet * (A01-) * Refer to parts list on page 18. Knob(TIMER) * (K27-) Knob(ROTARY)* (K27-) Cassette door ass'y * (A53-) Knob(EJECT) (K27-2431-08) Knob(EJECT) (K27-2431-08) H/P jack (E11-0925-08) AC power cord bushing* (J42-0083-05) 70%

CT-405/KXF-W4030 2 CONTENTS / ACCESSORIES CONTENTS / ACCESSORIES .................................. 2 BLOCK DIAGRAM ......................................................3 CIRCUIT DESCRIPTION ............................................4 ADJUSTMENT ............................................................6 PARTS DESCRIPTIONS ............................................7 PC BOARD ................................................................ 8 SCHEMATIC DIAGRAM .......................................... 11 EXPLODED VIEW ....................................................17 PARTS LIST..............................................................18 SPECIFICATIONS ....................................................21 Contents Audio cord (E30-0505-05) ........................ (2) System control cord (E30-2816-05) ............ (1) Accessories

(JK01) PLAY HEAD (CN01) REC/PLAY HEAD ERASE (CN02) RELAY (REC/PB) PRE AMPLIFIER DECK A/B (IC1 TA7784) SYSTM CONTROL (JK02) (Q06) R/P SW (Q19,21 SPEED N/H CONTROL DECK B) (Q20,22 DECK A) (Q54,55 (Q56,57 SOL. SW DECK B) DECK A) DECK A (CN06) (CN07) DECK B (Q51,52 (Q50,53 MOTOR VOLTAGE SW DECK B) DECK A) EQ AMPLIFIER (IC20 CXA1598S) (IC16 TC4051BP) EQ SW AUTO-BIAS LEVEL SW (Q34-Q36) (IC14 UPC1297CA) DOLBY HX-PRO (Q23,24) ERASE OSC (105kHz) (Q27,28) BIAS ON/OFF SW (Q25,26) ERASE ON/OFF SW CPU (IC11 LC866524A-5P85) ELEC. VOLUME CONTROL (IC3 TC9413AP) LINE AMPLIFIER (IC5 NJM4558D) (IC4 CXA1561S) DOLBY B/C NR (Q15,16) MPX SW DOLBY SW (Q17,18) (IC18 NJM4558D) LEVEL METER AMP RESET (IC19 S806D) (IC12 S-24C01) EEPROM PHOTO DETECTOR (IC6 BA10393) HEADPHONES JACK (JK300) CN08 HEADPHONES AMP (IC17 NJM4556AL) 400/12.5K (Q33) AUTO BIAS F. SELECT (Q07A,07) SW AUTO BIAS IN REC/PLAY SW CN09 CN05 ENCODER SW CN04 KEY CONTROL FLD DISPLAY POWER TRANS CN03 (D01 GBL02) DC RECTFIRE +12V REGULATOR (IC9 NJM7812FA) (IC8 NJM7808FA) +8V REGULATOR (IC10 NJM78M05) +5V REGULATOR (IC7 NJM79M08) -8V REGULATOR (Q14) -20V REGULATOR LINE IN LINE OUT PLAY A/B SW TYPE I/II SW REC O/P SENS/PLAY/CrO2/REC(FWD/REV) REC MUTE AUTO BIAS F. SELECT AUTO BIAS IN 400/12.5K F/O Ef AC(FLD) LINE O/P LINE IN MUTE CK/STB/DATA LINE O/P MUTE KXF-W4030/CT-405 3 CT-405/KXF-W4030 BLOCK DIAGRAM

4 CT-405/KXF-W4030 CIRCUIT DESCRIPTION Pin Pin Name I/O Description ACTIVE No. H L 1 AUTO BIAS IN O Auto bias control port. A BIAS Other 2 400/12.5K ,F/O O 400Hz/12.5kHz freq. output. 3 R/P HEAD O Control port for recording/playback. Recording Other 4 REC MUTE O Audio muting control on R/P for B deck. Off On 5 LINE/O MUTE O Audio muting control for line out. Off On 6 B MECH VCC O B mecha. solenoid control. Other Stop 7 A MECH VCC O A mecha. solenoid control. Other Stop 8 B SOL O B mecha. solenoid control. On Off 9 A SOL O A mecha. solenoid control. On Off 10 IN/MUTE O Audio muting control for input. Off On 11 AC CHK I Power failure input. AC On AC Off 12 RESET I Reset signal input. 13 NC - Unused. 14 ENCODER IN B I Encoder input B. 15 VSS - Connected to ground. 16,17 CF 6MHz - Main clock(6.0MHz). 18 VDD - Power supply. 19-22 K1-K4 I Key input(k1-k4). 23 TIMER P/R SW I Timer Play/Rec switch input. 24 CCRS LEVEL O CCRS level control port. 25 LEVEL MTR L/IN I Level meter input (Lch). 26 LEVEL MTR R/IN I Level meter input (Rch). 27 NC - Unused. 28 ENCODER IN A I Encoder input A. 29 - - Connected to system cont. data. 30-35 FLD 1G-6G O FLD grid control port(1G-6G). 36-45 FLD P1-P10 O FLD segment control port(S1-S10). 46 VDD - Power supply. 47-50 FLD P11-14 O FLD segment control port(S11-S14). 51 -VPP - FLD power supply(-26V). 52-61 FLD P15-24 O FLD segment control port(S15-S24). 62 A CrO2 SW I A CrO2 switch input. Type 2 Type1 63 A PLAY SW I A play switch input. Stop Play 64 A SENS. PULS I A photo sensor input. 65 A PACK SW I A pack switch input. Tape No Tape Yes 66 B CrO2 SW I B CrO2 switch input. Type 2 Type 1 67 B SENS. PULS I B photo sensor input. 68 B PACK SW I B pack switch input. Tape No Tape Yes 69 B PLAY SW I B play switch input. Stop Play 70 REC FWD SW I Forward recording switch input. 71 REC REV SW I Reverse recording switch input. 72 VDD - Power supply. 73 MPX FILTER O MPX filter ON/OFF control. 74 REC FILTER O MPX filter ON/OFF control. 75 REC EQ O Rec EQ.(I/II) Control. I II 76 SPEED N/H O B motor speed (normal/hi) control port. Nor Hi 77 DOLBY NR B/C O Control port for dolby NR(B/C). 78 DOLBY NR ON/OFF O Dolby NR ON/OFF control port. 79 A MOTOR SPEED O A motor speed (normal/hi) control port. Nor Hi 80 P.B EQ O P.B EQ. Control. 81 MTR AMP GAIN A O Gain control of level meter amplifier. 82 MTR AMP GAIN B O Gain control of level meter amplifier. 1. Pin description of microprocessor

CT-405/KXF-W4030 CIRCUIT DESCRIPTION 5 Pin Pin Name I/O Description ACTIVE No. H L 83 AUTO BIAS F SEL. O Auto bias frequency selection 8LPF). 400Hz 12.5kHz 84 ERASE OSC ON/OFF O Erase OSC(ON/OFF) control. Recording Other 85 BIAS OSC ON/OFF O Bias OSC(ON/OFF) control. 86-88 BIAS L1-L3 O Bias level control output. 89 VSS - Connected to ground. 90 VDD - Power supply. 91 NC - Unused. 92 PLAY A or B O A/B deck control port. A Playback Other 93 NC - Unused. 94 EE PROM SCL O EE PROM SCL. 95 EE PROM SDA O EE PROM SDA.. 96 SYSTEM CONT.BUSY O System control byusy. 97 SYSTEM CONT.DATA O System control data. 98 TC9413AP DATA/O O Data output to E. volume. 99 TC9413AP STB/O O Strobe output to E. volume. 100 TC9413AP SCK/O O Clock output to E. volume. Pin No. Pin Name Type I N.Sp Type I H.Sp Type II N.Sp Type II H.Sp 75 Rec E.Q. I/II H H L L 76 Speed N/H H L H L PORT SW1 SW2 SW3 SW4 SW5 SW6 (PIN19) A REV A FWD A A RESET - K1 PLAY PLAY REW FF A (PIN20) B REV B FWD B B REC/ MODE K2 PLAY PLAY REW FF REM (PIN21) A B PAUSE CCRS AUTO RESET K3 STOP STOP BIAS B (PIN22) DOLBY REV NOR HI MPX - K4 MODE DUBBING DUBBING FILTER 2. Key matrix 3. Description of R/P output for microprocessor. ( ) Microprocessor port Pin No. Pin Name Description 3 Rec/P.B B Mecha. Recording Mode : H Other : L 4 Rec Mute B Mecha. Recording /Playback Mode : H Other : L 5 Line Mute A/B Playback or B Recording : H Other : L 80 P.B EQ. 70 Tape Type II : H Other : L 1 Rec Input Select Auto Bias Recording : H Other : L 83 A. Bias F Select Auto Bias 400Hz Recording : H Other : L 85 B OSC On/Off Recording/Playback : H Other : L 81 M. Amp Gain 1 P.B/Recording/Dubb. : H Other : L 82 M. Amp Gain 1 Auto Bias : H Other : L Pin No. Pin Name Rec.M.Fil On Rec.M.Fil Off Other 73 MPX Filter L H H 74 REC Filter L L H Pin No. Pin Name Dolby C Dolby B Off 77 Dolby B/C L H H 78 Dolby On/Off L L H * Filter off when dubbing mode.

LINE IN REC PLAY LINE OUT SYSTEM CONTROL No. ITEM INPUT SETTINGS OUTPUT SETTINGS CASSETTE DECK SETTINGS ALIGNMENT POINT ALIGN FOR FIG. CASSETTE DECK SECTION TAPE: NORMAL, DOLBY: OFF, INPUT: LINE IN 0 dBs = 0.775 V I. REC/PLAY HEAD [ 1 ] DEMAGNET- IZATION – – POWER OFF Remove the cassette door. REC/PLAY head Demagnetize the REC/ PLAY head with a head demagnetizer. [ 2 ] CLEANING – – PLAY REC/PLAY head, erase head, capstan pinch roller Clean the REC/PLAY head, erase head, capstan and pinch roller using a cotton swab slightly damped with alcohol. [ 3 ] AZIMUTH (A) MTT·114, TCC-153 0 kHz, -10 dB (B) PLAY Azimuth adjustment screw Maximum output. (a) II. PC BOARD [ 1 ] NOR. SPEED A DECK B DECK HI. SPEED NOR. SPEED HI. SPEED (A) MTT-111, TCC-110 3 kHz (B) PLAY SFR 06 SFR 08 SFR 05 SFR 07 5.4 kHz 5.4 kHz PLAY HI DUBBING Play first and short * TP2 to GND. Adjust the tape speed so that a 3 kHz signal is produced at the center of the tape. Adjust the tape speed so that a 3 kHz signal is produced at the center of the tape. III. PC BOARD * TP2 (Q12, BASE) < 1 > PLAYBACK LEVEL MTT-150 400 Hz (200 nWb) DOLBY 0 dB LEVEL (B) 20 dBs 0 dBs (B) PLAY A SFR101 (L) SFR102 (R) Output level : 0 dBs < 2 > BIAS CURRENT (A) 400 Hz, -20 dBs 12.5 kHz, -20 dBs Adjust REC level VR so that the REC monitor output becomes -20 dBs at 400 Hz, then record and reproduce signal of 400 Hz and 12.5 kHz in alternation. SFR11 (L) SFR12 (R) Record 400 Hz and 12.5 kHz in alternation and adjust the variable resistors which control the bias current so that the same playback level is obtained. < 3 > RECORD LEVEL (A) 400 Hz, 123mV (B) Record and reproduce a 400 Hz, signal under the conditions set in < 3 >. SFR09 (L) SFR10 (R) Adjust for 0 dBs at line out. CT-405/KXF-W4030 ADJUSTMENT 6

CT-405/KXF-W4030 PARTS DESCRIPTIONS 7

8 A B D C E 2 1 3 5 7 4 6 Refer to the schematic diagram for the value of resistors and capacitors. PC BOARD ( Component side view ) J324 J319 J318 J317 J326 J327 J303 RESET A DOLBY REV. MODE NOR DUBBING HI DUBBING MPX CCRS AUTO BIAS RESET B A REW A FF PAUSE REC/ARM B REW MODE B FF J302 J301 J300 J316 J315 J314 J313 J312 J311 J310 J309 J308 J307 J306 J305 J304 J323 J322 J320 J321 J325 R300 R305 R311 R317 R316 R308 A2 A3 R310 R309 R315 R314 R321 R320 R319 R318 R303 R304 2 1 REV STOP FWD R302 R312 R301 1 5 1 5 49 1 1 1 2 5 37 38 FWD STOP REV R307 R313 R306 1 5 C307 C306 G2 C300 1 4 C302 C303 C301 R323 R325 R324 R322 G1 1 4 PLAY REC. TIMER S304 S317 S318 S319 S320 FLT01 FRONT PWB S321 S314 S315 S316 S304 S303 S313 S309 S307 S310 S308 CN05 S300 A MECHA PWB S311 S301 CN300 CN302 CN300 CN04 B MECHA PWB S306 S312 S305 CN302 POWER SW. PWB S323 POWER S322 CN08 PHONES HEADPHONE PWB JK300 CN09 S325 ENCODER PWB

F H J L N G I K M O 2 1 3 5 7 4 6 Refer to the schematic diagram for the value of resistors and capacitors. PC BOARD (Component side view) 9 10 J187 J188 J189 J190 J179 J145 J149 J191 J215 J158 J216 J181 J152 J186 J197 J182 J178 J177 J176 J203 J211 J224 J242 J127 J130 J123 J200 J143 J51 J50 J49 J64 J61 J62 J63 J60 J48 J142 J44A J88 J246 J129 J125 J126 J131 J202 TP2 TP6 TP4 TP5 OSC OFF TP3 TP11 GND DOLBY DOLBY Rch 388mV Lch 388mV Rch TP7 Lch L13 L14 TP8 GND OSC FREQ. L04 J184 J196 J199 L09 J198 J244 J245 J162 J161 J160 J159 J1L J185 J135 J122 J136 J147 J146 J228 J229 J231 J241 J183 J201 J170 J169 J172 J171 J206 J167 J133 ENCODER J134 J168 J205 J166 J165 J194 J180 J175 J156 J155 J154 J144 J47 J46 J151 J164 J163 J148 J141 J140 J157 J173 J99 J213 J238 J225 J223 J237 J81 J82 J83 J137 J68 J84 J85 J86 J87 J119 J153 J80 J118 J114 J111 J110 J109 J117 J92 J94 J96 J76 J75 J78 J74 J73 J72 J67 J66 J65 J71 J70 J69 J95 J93 J91 J90 J120 J235 J234 J226 J212 J221 J214 J227 J218 J219 J220 J217 C114 C115 C111 C112 R106 C16 C24 R207B C134 R86D R105 R118 R210 R216 R222 R228 R212 R218 R224 R230 C10 R201 R47 R54 R39 C33 R41 R43 R11 R12 R42 R52A R113 Lch BIAS ADJ. SFR11 Rch BIAS ADJ. SFR12 R108 R115 R109 R110 R204A C09 R86H R124 R180A R126 R104 C130 R205 R207A J107 C18 C17 R13 R14 R07 C106 C102 J192 J195 J240 J23 J193 J208 J209 J210 J230 J239 J113 J24 J1E J1F J1H J45 J1K J43 J1A J247 J79 J77 J102 J121 J112 J89 J14 J104 J105 J106 J232 J233 J97 J98 J128 J174 J150 J139 J138 J132 C F01 J115 J207 J243 J1M C162 C160 C121 C85 C162 C82 C72 C73A C84 C86 C87 C80 C71 C60A C94 C64 C68 C65 C67 C66 C115A C153A C153 C152A R167 C153B C155 C150A C141 C52 C44 C26 C45 C50 C51 C53 C27 C28 C140 C73 C69 C25 R23 R112 C22 C21 C133 C08 C20 C23 C07 C132 C132A C38 C40 C49A C133A C47 C49 C41 C49B C48 C39 C14 C18A C17A C13 10 2 2 2 1 1 1 50 51 80 81 100 1 30 31 6 1 1 3 9 11 37 38 12 R256A R256 R80 R76 R85 R78 R82 R75 R86G R86B R86A R87 R89 R86C R86 R88 R86E R86F R156 R250 R251 R30 R29 R21 R28 R79 R81 R84A R258 R91 R257A R101 R96 C110 C05 R05 C03 R08 C136 C100 C99 R206A C135 C137 R206 C131 R208B R04 R06 C06 C04 R19 C01 R01 R02 C19 C02 C15 R03 R20 R17 R09 R10 R229 R223 R217 R211 R207 R209 R213 R219 R225 R231 R205A R51 R49 R203 R215 R221 R227 R226 J236 J248 J15 J13 J17 J31 J7 J222 J8 J1G J36 J29 J10 J33 J44 J42 J1 I G O 3 3 1 I G O 3 1 I G O 3 1 1 J41 J40 J2 J6 J32 J16 J10 J30 J39 J56 J1C J1B 1 5 J55 J54 J38 J37 J5 J35 J34 J18 J27 J26 J19 J28 J53 J52 J36A J59 J3 J4 J58 J57 J20 J21 J25 J22 J12 J11 J124 J100 J101 J108 R220 R214 R204 R202 J103 R53 R44 R208 R16 RY01 L12 L03 L11 L02 L01 C108 L07 L08 R94 R256B R90A R257B R91A SFR08 SFR06 SFR05 DOLBY LEVEL DOLBY LEVEL ADJ. ADJ. Rch REC LEVEL ADJ. Rch Lch SFR01 SFR02 SFR10 REC LEVEL ADJ. Lch SFR09 SFR07 R90 R100 C104 C101 C105 C107 C103 R103 R129 J116 R125 R130 R127 R122 R180 R200 R52 L06 C35 C37 R45 R55 C11 R40 R62 R165 R165A R165B R102A C62 C60 C63 C61 C91 R260 R262 R263 C89 C88 R180B R136A R57A R135 R137A R264 R261 R265 C81 R74 R70A R70B R73 R167A R162 R132A R135A R131A R136A C146 1 8 4 1 C144 C90 R138 R136 R140 R142 C143 C148 C145 C147 R133 R134 C142 C149 R139 HEADPHONE R69 C46 R57 R56 R61 C55 R59A R59 R58A R36 R60 C54 J9 R37 R56A R58 R33 R35 R32 R34 R141 R137 JK02 R66 R64 C32 C29 C30 R26 C42 R38 R50 R144 R132 R70 FR02 FR01 R71 FR03 R131 R68 R143 R161 R163 R112B R63 R65 R67 C43 R27 C12 R166A R166 C152 C150 R164B R160 R150 R151 R164 L05 R48 R46 C34 R164A R102 R204B R72 R159 R158 R157 R121A R121 C93 R120 C95 C154 C152B C36 R272 R273 R274 SW TIMER R97 C119 OSC FREQ. ADJ 105KHZ C120 C118 R255 R83 R77 R84 R92 R98 C117 R259 R90B R95 R128 J204 C113 C109 R276A R270 R271 R275 R277 R145 R99 R257 R93 R83A B B B E B E O I G B E B E B E B E B E B E B E B E B E B E B E B E B E B E B E B E E B E B E B E B E B E E B E B B A B B A E E B E B E B E B E B E B E B E B E B E B E B E B E B E B E B E B E B E B E B E B E B E B E B E B E B E B E B E 4 1 4 1 1 2 8 5 8 5 4 1 8 5 4 1 8 5 4 1 16 9 8 1 18 10 9 1 16 9 8 1 22 12 11 1 16 9 8 1 22 12 11 1 A6 C305 1 T01 5 A2 A5 A4 A1 D21 D03 D04 D07 D22 Q57 Q25 IC19 D09 CN05 Q20 Q19 CN07 Q27 Q37 Q34 Q35 Q36 Q38 Q07A Q47 Q46 Q45 Q44 Q41 Q14 Q43 IC17 CN08 Q12 Q12A Q43A Q42 Q13A JK01 LINE OUT LINE IN PLAY CONTROL SYSTEM MAIN PWB REC Q13 Q09 Q08 Q42A D23 Q06 Q10 Q30 Q29 Q04 Q03 CN02 CN01 Q52 Q54 Q28 Q50 Q15 Q16 Q07 Q26 Q33 Q40 Q39 Q18 Q17 Q56 Q55 Q53 Q22 Q51 IC11 CN04 CN09 Q23 Q24 Q11 Q21 CN06 D162 D24 D13 D12 D10 D01 D15 D11 D19A D19 D17 D109 D110 D107 D108 D05 CN03 D14 D02A D02 D22A D06 D106 D105 D104 D103 D16 D18A D18 D20 D08 D160 IC6 IC12 IC18 IC7 IC10 IC9 IC8 IC5 IC1 IC14 IC16 IC4 IC3 IC20 TRANS PWB CN03

A B D F H J C E G I 2 1 3 5 7 4 6 3 2 1 1 2 3 4 5 6 1 2 3 4 5 6 7 8 9 10 SOL. SENS PLAY SW MTR (+) SPEED A SPEED B +5V GND CrO2 SW PACK 1 2 3 4 5 6 7 8 9 10 11 12 SOL. SENS PLAY SW MTR (+) SPEED A SPEED B +5V GND CrO2 SW PACK REC. SW (FWD) REC. SW (REV) 3 2 1 1 2 3 4 5 6 6 4 2 1 15 10 3 12 14 16 8 5 7 9 13 VCC GND BIAS 11 15K R07 330K R05 18K R03 22K R17 4.7u50 + C07 10u50 + C13 330P C15 27K R13 330P C03 C05 0.01 R14 27K 10u50 C14 + 1K SFR02 330K R02 680P C02 680P C01 330K R01 0.1 C19 470u16 C20 + SFR01 1K C16 330P 820P C18 820P C17 4.7u50 C17A + 4.7u50 C18A + 2.2u50 C25 + R23 3.3K 1/4W RY01 15K R08 330K R06 18K R04 0.01 C06 330P C04 47K R20 47u16 C21 + C22 + 1u50 1K R19 4.7K R21 80 92 100U16 + 0.1 C24 C23 2.2K R12 27mH L02 75P C10 2700P C12 3.3K R10 4.7u50 C08 + 22K R16 3.3K R09 +8V +8V 75P L01 27mH C09 2700P C11 2.2K R11 1 2 3 4 5 6 7 8 VSS OUT(L) IN(L) NC A-GND CS1 GND CK 16 15 14 13 12 11 10 9 VDD (R)OUT (R)IN NC A-GND CS2 STB DATA 22 21 20 19 18 17 16 15 14 13 12 VCT PB/I L/I MPX/I MPX/O L/O TCM TCL REC/O MODE VCC 1 2 3 4 5 6 7 8 9 10 11 IREF PB/I R/I MPX/I MPX/O H/O TCM TCL REC/O SW. VEE L06 3.3K R44 R42 8.2K R40 10K C32 100P 4.7u50 C44 + 1K R38 5.6K 5.6K 99 98 TP1 10K R27 10u50 + C26A C30 1000P 1000P C29 5.6K 100 10u50 C26 + 10K R41 100P C33 1K 4.7u50 + 1 2 3 5 4 R55 4 3 2 5 1 3.3K 0.1 C35 0.068 C37 R43 8.2K 4.7K R36 4.7K R37 1 2 3 4 5 6 7 8 9 10 SOL. SENS PLAY SW MTR (+) SPEED A SPEED B +5V GND CrO2 SW PACK 1 2 3 4 5 6 7 8 9 10 11 12 SOL. SENS PLAY SW MTR(+) SPEED A SPEED B +5V GND CrO2 SW PACK REC. SW (FWD) REC. SW (REV) 5 6 69 71 6 5 2 6 63 20K SFR05 22K R93 10K SFR07 27K R95 47K R91 6 5 5 6 R94 27K SFR08 10K 47K R90 20K SFR06 22K R92 10K R90A 1/4W R91A 10K 1/4W TP2 4.7K R90B 10K R86H 79 L09 C120 0.01 R98 5.6 5.6 3900P C118 18K R96 18K R97 3900P C119 R100 150 1K R101 4.7K R102 B A A B CrO2 SW PACK SW CrO2 SW PACK SW REC SW(RVS) REC SW(FWD) SOL SOL C34 0.1 C36 0.068 C38 10u50 + TP4 TP3 C49 100u16 + R52 47 R54 8.2K C39 10u50 + 100u16 C49B + 100u16 + C49A 10u50 + C40 100u16 C48 + 8.2K R52A 2.2u50 + C121 8200P C117 TP8 TP5 4.7K R102A R100A 150 1/4W 470uH L03 470uH L04 1/4W R99 Q23,24 6 5 4 7 3 2 1 Q25,26 22 21 20 19 18 17 16 15 14 13 12 GP GH GL GPCAL GHCAL RECCAL IN IRFE BOOST VCC OUT 1 2 3 4 5 6 7 8 9 10 11 FQ F/Q FM FPCAL D-GND REC IN GND BOOST VEE OUT 16 15 14 13 12 11 10 9 VDD 2 1 8 3 A B C 1 2 3 4 5 6 7 8 4 6 CON 7 5 INH VEE VSS 20 21 22 0.01 C134 3 1 2 R206 39K 100P C131 10u50 C137 + 12K R206B 2.2u50 C133 + SFR09 10K 1K R205 R205A 2.2K C133A + 1u50 R204 2.2K R204A 1K SFR10 10K R201 2.2K 3.3K R202 3.3K R203 1u50 C132A + 33K R204B R200 2.2K C27 4.7u50 + C28 4.7u50 + 10K R26 220P C42 220P C43 R28 R29 R30 L05 R45 1/4W 15K +8V +8V +8V +8V +8V +8V +8V 13 12 14 15 R86D 10K R86C 2.2K 3 2 22 1 20 21 12 14 15 13 C135 0.01 C136 + 10u50 12K R207B R206A 15K R226 15K R229 120K R227 68K R228 75K R230 68K R231 22K R211 68K R217 10K R223 68K R216 33K R215 18K R220 200K R221 51K R222 15K R214 18K R208 51K R210 27K R209 68K R219 56K R218 15K R224 39K R225 39K R213 27K R212 2.2u50 + C132 100P C130 75 76 10u50 C99 + 10K R121A R207 47K 10K R207A 10K 1/4W MUTE (L) (R) 100u16 C162 + 62 65 66 70 68 C160 100u16 + +12V +12V +5V 10 13 8 7 6 10K R257 1K R255 1K R256 10K R258 10K R257A 1K R257B 1/4W R256B 10K R256A 9 1K L13 470uH L14 470uH 6 1 6 1 1 2 13 10 84 4 R53 47 3 +5V +8V +8V +8V 10 13 +12V +12V +12V +12V +5V R39 C45 +8V +12V +12V +8V +5V +5V +5V +5V +5V +5V +5V +B +B +B +B +B +B +B +B +B +12V 8V 8V 8V 8V 8V 8V 8V 8V 8V 8V 8V 8V +8V +8V NF-2 N M N M NF-1 CH1-F CH2-F CH2-R CH1-R 2 3 1 5 4 7 8 6 OSC FREQ 105KHz OSC OFF 1,2 B(A) B(B) +8V +5V +B +12V +5V 13 12 H N NOR TAPE TYPE 14 15 CrO2 PIN No. SPEED TAPE H N H N H N CN01 CN02 CN06 CN07 CN01 CN02 Lch Rch Rch ERASE Lch PLAY R/P EQ SW T1/T2 SW PB LEVEL (Rch) (Lch) PB LEVEL D20 Q06 R/P SW Q03 Q04 EQ AMP ELEC.VR CN06 CN07 B MECHA NOR.SPEED HI SPEED B MECHA CONTROL SPEED N/H A MECHA HI SPEED A MECHA NOR.SPEED Q21 Q22 Q19 Q20 Q23 Q24 Q25 M M DOLBY B/C NR Q26 SW ON/OFF ERASE ERASE OSC (BOTTOM VIEW) Q08 Q09 Q30 Q29 Q07 Q07A TYPE 2 HIGH SW TYPE 1 HIGH SW TYPE 2 NOR.SW TYPE 1 NOR. SW EQ SWITCH (Rch) REC LEVEL (Lch) REC LEVEL AUTO BIAS REC EQ AMP MUTE REC Q51 Q53 Q55 Q52 Q50 Q54 B MECHA VOLTAGE SW A MECHA VOLTAGE SW B SOL.SW A SOL.SW Q57 Q56 D162 D160 IC16 A MECHA B MECHA IC1 IC3 IC4 B MECHA A MECHA IC20 IC16 MAIN PWB 2.2V A: 4.6V B: 0V B: 5.0V A: 0V 2.2V 2.2V 2.2V 2.2V 2.2V 2.2V 2.2V 2.2V 2.2V 8.1V REC: 0V PLAY: 12.0V REC: 0.7V REC: 4.7V HI: 8.5V NOR: 11.3V NOR: 11.3V HI: 8.5V 11.3V NOR: 0V HI: 12.0V NOR: 0V HI: 11.9V NOR: 0V HI: 12.0V HI: 0V NOR: 5.0V NOR: 3.6V HI: 0V A: 12.0V B: 0.1V B: 12.0V A: 0.1V 5.0V 5.0V B: A: 12.0V 11.3V B: 0.5V A: 12.0V B: 12.0V A: 0.5V -3.3V -8.1V 12.0V 8.1V 7.3V 8.0V REC: 4.2V 8.1V -8.0V PLAY: 0.7V -6.2V -6.4V 7.5V -6.2V -6.4V -6.2V OFF: 0V ON: 4.4V MPX -7.4V DOLBY OFF: -6.4V B: -0.6V C: 4.4V -8.0V REC: 0V PLAY: 3.9V 0V 1.1V 1.1V 0V -8.0V 8.1V 5.4V 12.5K: 0V 400Hz: 0.9V ON: 5.0V AUTO BIAS 0V 5.0V HI: 0V NOR: 5.0V SPEED CrO2: 0.4V NOR: 4.8V 1.1V 1.1V 1.1V 1.1V 1.1V 0V 1.1V 0V 1.1V 0V 1.1V 1.1V 1.1V 1.1V 0V 1.1V 2SA733 2SA934 2SC2878A 2SC945 DTA124ES DTC114TS DTC124ES NJM4558DX TA7784P TC4051BP BA10393 NJM4556AL UPC1297CA NJM78M05A CAUTION: For continued safety, replace safety critical components only with manufacturer's recommended parts (refer to parts list). indicates safety critical components. For continued protection against risk of fire, replace only with same type and rating fuse(s). To reduce the risk of electric shock, leakage-current or resistance measurements shall be carried out (exposed parts are acceptably insulated from the supply circuit) before the appliance is returned to the customer. The DC voltage is an actual reading measured with a high impedance type volt- meter with a cassette loaded at playback mode. The measurement value may vary depending on the measuring instruments used or on the product. Bias circuit DC voltage is measured while in the record mode. DOLBY and the double-D symbol are trademarks of Dolby Laboratories Licensing Corporation. Noise reduction circuit made under license from Dolby Laboratories Licensing Corporation.