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Kenwood KAC-PS650D Service Manual

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POWER AMPLIFIER
KAC-PS650D
KAC-X650D

SERVICE MANUAL

A.CH
FILTER
B.CH
B.M.S.
OPERATION
INPUT SELECTOR
LINE IN
A
B
OFF
OFF
A
B
A
A
B
SUB
OFF
HPF
STEREO
MONO(Lch)
HPF
LPF
REMOTE
+12dB
L
GND
50
200
50
200
50
200
50
200
R
A.CH HPF
B.CH HPF
B.CH LPF
SUB.CH LPF
FILTER FREQUENCY(Hz)
© 2002-3 PRINTED IN KOREA
B51-7935-00 (K) 3547
EXT.AMP.CONT.
SUB
L
R

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  Summary of Contents for Kenwood KAC-PS650D

  • Page 1: Service Manual

    POWER AMPLIFIER KAC-PS650D KAC-X650D SERVICE MANUAL © 2002-3 PRINTED IN KOREA B51-7935-00 (K) 3547 A.CH FILTER B.CH B.M.S. OPERATION INPUT SELECTOR LINE IN EXT.AMP.CONT. STEREO MONO(Lch) REMOTE +12dB A.CH HPF B.CH HPF B.CH LPF SUB.CH LPF FILTER FREQUENCY(Hz)
  • Page 2: Microcomputer's Terminal Description

    KAC-PS650D/X650D MICROCOMPUTER'S TERMINAL DESCRIPTION (X09-) IC22 : u-COM PORT PORT NAME FUNCTION OPERATING CONDITION Controls small-amount current. "L" : SW 5V on. +5V SW O Controls fan rotation. "H" : Fan on. Detects class-D over-voltage. "L" : Over-voltage detection. D VOLTAGE V DOWN Detects momentary power down.
  • Page 3: Circuit Description

    KAC-PS650D/X650D CIRCUIT DESCRIPTION Shock Noise Prevention Circuit D151 R129 Q428 R454 Q159 R451 Q426 Q427 D153 R453 D435 Q429 R517 D431 u-COM 1 receives mute signal from MUTE-2 terminal of u-COM, "MUTE-2" and bias voltage of is short-circuited, and driver transistors and final transistors on X08- get in condition of non-operation, and shock noise is prevented.
  • Page 4 KAC-PS650D/X650D CIRCUIT DESCRIPTION Class-D Amplifier Q308 R499 Q306 Q439 Q307 1.5K Q313 Q441 L301 L302 Q309 70uH 70uH Q303 Q304 Q301 Q302 Q314 Q305 R361 GATE DOWN- R392 GATE Q310 Q311 Q440 R500 Q442 R380 1.5K 1/2W Q301-304 convert voltage of up-gate and down-gate to current.
  • Page 5 KAC-PS650D/X650D ADJUSTMENT (KAC-PS650D/X650D) INPUT RECEIVER ALIGNMENT ALIGN ITEM OUTPUT SETTINGS FIG. SETTINGS SETTINGS POINTS Connect a cassette receiver or other receiver. Connect a DC VR5 (A-Lch) voltmeter between VR6 (A-Rch) IDEL emitter terminals of VOLUME : 0 VR7 (B-Lch) 2.5mV...
  • Page 6 KAC-PS650D/X650D ADJUSTMENT (a)2.5mV DC Voltmeter Q261 Q161 2SC5101 2SC5101 B-Lch A-Lch (a)2.5mV DC Voltmeter (a)2.5mV DC Voltmeter A-Rch B-Rch Q162 Q262 2SC5101 2SC5101 (a)2.5mV DC Voltmeter...
  • Page 7: Pc Board (Foil Side View)

    PC BOARD (Foil side view) X08 B/3 Ref.No Q102 Q104 Q106 Q108 Q110 Q112 Q114 Q116 Q118 Address Ref.No Q202 Q204 Q206 Q208 Q210 Q212 Q214 Q216 Q218 Address X08 C/3 X08 B/3 Q110 Q209 R217 R118 D201 D102 R120 R219 Q114 Q213...
  • Page 8 AUDIO UNIT PC BOARD(Component side view) X09-5450-10 A/2(J74-1376-11) Ref.No IC10 IC11 IC12 IC13 IC21 IC22 IC23 Address Ref.No Q159 Q160 Q161 Q162 Q163 Q164 Q259 Q260 Q261 Q262 Q263 Q264 Q301 Q302 Q303 Q304 Q305 Q306 Q307 Q308 Q309 Address AUDIO UNIT X09-5450-10 A/2 (J74-1376-11) Q261...
  • Page 9 PC BOARD(Component side view) AUDIO UNIT X09-5450-10 A/2 (J74-1376-11) X09 B/2 Refer to the schematic diagram for the value of resistors and capacitors.
  • Page 10 (X08- ) (A/3) PREAMPLIFIER UNIT (X08-4100-10) (C/3) AUDIO UNIT (X09-5450-10) (A/2) C201 10u16 C101 10u16 +16V +16V R151 390 Q201,203 Q101,103 C203 1000P C103 1000P D101 ISOLATION FIRST STAGE R121 8.2K FIRST STAGE (4/4) R152 390 AMPLIFIER DIFFERENTIAL R201 47K R101 47K R101 C103...
  • Page 11 33u50 33u50 IC23 Q316 COMPENSATION 2SA1534A 2SC3940A BIAS C461 0.01 Q430,438 Q433,435,446 RESET Q438 R494 OVER CURRENT 2SA733(A) 2SC945(A) DETECTOR DRIVER 2SA965 FREQUENCY CUT-OFF 2SA992 2SC1845 D100 KAC-PS650D/X650D (E/K,M,J) TC4052BF NJM5532MD DAN202U UPC494GS TC74HC00AF NJM2060M PST9130NR TC4W66F DAP202U KAC-PS650D/X650D DA204U...
  • Page 12: Exploded View

    KAC-PS650D/X650D EXPLODED VIEW (X09-) (B/2) F1,2 (X08-) (C/3) (X08-) (B/3) (X09-5450-10) (A/2) (X08-4100-10) (A/3) KAC-PS650D/X650D (E/K,M,J) Parts with exploded view numbers larger than 700 are not supplied.
  • Page 13: Parts List

    H54-2518-04 ITEM CARTON CASE (KAC-X650D) C219-222 CK73GB1H102K CHIP C 1000PF ✽ CN1 ,2 E40-4457-05 SOCKET FOR PIN ASSY H54-2519-04 ITEM CARTON CASE (KAC-PS650D) ✽ ✽ CN3 ,4 E40-4453-05 SOCKET FOR PIN ASSY J21-9853-03 MOUNTING HARDWARE ✽ ✽ CN7 -9 E41-0294-05...
  • Page 14: Audio Unit (X09-5450-10)

    CHIP C 15PF C340 CK73GB1H102K CHIP C 1000PF C109,110 CE04DW1C100M ELECTRO 10UF 16WV C352 CK73GB1C104K CHIP C 0.10UF : KAC-PS650D E : Europe K : North America M : Other Areas KM1J1 : KAC-X650D indicates safety critical components. J : Japan...
  • Page 15 RK73GB2A332J CHIP R 3.3K 1/10W ✽ CN3 ,4 E40-4440-05 PIN ASSY R235 RK73GB2A222J CHIP R 2.2K 1/10W : KAC-PS650D E : Europe K : North America M : Other Areas KM1J1 : KAC-X650D indicates safety critical components. J : Japan...
  • Page 16 R442 RK73GB2A273J CHIP R 1/10W R359 RK73GB2A152J CHIP R 1.5K 1/10W R443 RK73GB2A104J CHIP R 100K 1/10W : KAC-PS650D E : Europe K : North America M : Other Areas KM1J1 : KAC-X650D indicates safety critical components. J : Japan...
  • Page 17 1/6W D403-406 FR103S DIODE R519 RK73GB2A103J CHIP R 1/10W D407 FML22S*A DIODE R520 RK73GB2A223J CHIP R 1/10W : KAC-PS650D E : Europe K : North America M : Other Areas KM1J1 : KAC-X650D J : Japan indicates safety critical components.
  • Page 18 DTC124EUA DIGITAL TRANSISTOR PTH9L04BD222TS POSITIVE RESISTOR Q312 UN5212 DIGITAL TRANSISTOR ✽ Q313,314 STW34NB20 Q315 DTA124EUA DIGITAL TRANSISTOR : KAC-PS650D E : Europe K : North America M : Other Areas KM1J1 : KAC-X650D indicates safety critical components. J : Japan...
  • Page 19: Specifications

    Installation Size (Width x Height x Depth) ....................283mm x 58mm x 350mm Weight......................................5.7Kg KENWOOD follows a policy of continuous advancements in development. For this reason specifications may be changed without notice. KENWOOD CORPORATION 14-6, Dogenzaka 1-chome, Shibuya-ku, Tokyo, 150-8501 Japan KENWOOD SERVICE CORPORATION KENWOOD ELECTRONICS ITALIA S.p.A.

This manual is also suitable for:

Kac-x650d