Kenwood RD-VH7 Service Manual

Stereo amplifier/tuner/cd player
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STEREO AMPLIFIER/TUNER/CD PLAYER
RD-VH7
QQ
3 7 63 1515 0
SERVICE MANUAL
(VH-600/700)
Knob(EJECT) *
(K29-)
673
eject
phones
621
TE
L 13942296513
Indicator
(B12-0360-04)
Side plate
(A50-1326-02)
Power cord bushing
609
(J42-0083--05)
664
631
AC power cord *
www
(E30-)
.
In compliance with Federal Regulations, following are repro-
ductions of labels on, or inside the product relating to laser
product safety.
Dressing panel *
(A21-)
605
stereo amplifier/tuner/CD RD-VH7
input
tuning
p.call
enter
standby
band
timer
auto
/mono
demo
607
Dressing panel
(A21-3761-02)
Lock terminal board
(E70-0052-05)
J1
A1
Oscillating module
Rectangular receptacle
(W02-1114-15)
(E08-0311-05)
x
ao
y
i
8
Dressing panel
(A21-3760-02)
606
multi control
mode
672
616
Q Q
3
6 7
1 3
Knob
Escutcheon
(K29-7556-04)
(B07-2452-13)
Screw terminal board
(E70-0111-05)
J5
J4
u163
*Refer to parts list on page 31.
.
KENWOOD-Corp. certifies this equipment conforms to DHHS
Regulations No. 21 CFR 1040. 10, Chapter 1, Subchapter J.
DANGER : Laser radiation when open and interlock defeated.
AVOID DIRECT EXPOSURE TO BEAM.
2 9
9 4
2 8
© 1999-6/B51-5551-00 (K/K) 3133
Panel
Insulator assy
(A60-1647-11)
(J02-1444-24)
610
620
1 5
0 5
8
2 9
9 4
Front glass
Knob(POWER)
(B10-3488-03)
(K29-7554-04)
Phono jack
Phono jack
(E63-0164-05)
(E63-1082-05)
J2
J3
Phono jack
Phono jack
m
(E63-1089-05)
(E63-1088-05)
co
9 9
652
671
2 8
9 9
J1
J2
70%

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Summary of Contents for Kenwood RD-VH7

  • Page 1 *Refer to parts list on page 31. In compliance with Federal Regulations, following are repro- KENWOOD-Corp. certifies this equipment conforms to DHHS ductions of labels on, or inside the product relating to laser Regulations No. 21 CFR 1040. 10, Chapter 1, Subchapter J.
  • Page 2: Table Of Contents

    RD-VH7 3 7 63 1515 0 CONTENTS / ACCESSORIES Contents CONTENTS / ACCESSORIES ........2 PARTS DESCRIPTIONS ..........15 DISASSEMBLY FOR REPAIR........3 PC BOARD ...............16 BLOCK DIAGRAM ............4 SCHEMATIC DIAGRAM ...........19 CIRCUIT DESCRIPTION ..........5 EXPLODED VIEW ............29 CD MECHANISM DESCRIPTION ......11 PARTS LIST..............31...
  • Page 3: Disassembly For Repair

    RD-VH7 3 7 63 1515 0 DISASSEMBLY FOR REPAIR REMOVE CD MECHANISM After remove insulator ass'y, then remove some LR side board. Next remove the top and the bottom boards. 1) Remove the 6 screws1, then remove the front panel.
  • Page 4 MOTOR +6.3V CD MECHA DRIVER (+5V) LOADING S2-13 MOTOR HD6433297A17F DISPLAY u-COM TACT KEY D1-4,Q1-4 MECHA SENSOR DISC M.C/ENCODER SENSOR +5.6V REMOCON DISPLAY u-COM LCD ASS'Y SENSOR BACK UP TRANS. +5.6V u-COM AC IN u 1 6 3 RD-VH7 www.denom.net...
  • Page 5: Circuit Description

    RD-VH7 3 7 63 1515 0 CIRCUIT DESCRIPTION 1. INITIAL SETTING (5) TUNER PRESET FREQUENCY TUNER DESTINATION 1-1 INITIAL CONDITIONS (1) AMP 97.5MHz FM 97.5MHz FM 97.5MHz POWER 87.5MHz FM 87.5MHz FM 87.5MHz PROTECTION NO DETECTED 89.1MHz FM 89.1MHz FM 89.1MHz...
  • Page 6 RD-VH7 3 7 63 1515 0 CIRCUIT DESCRIPTION 4. LCD INDICATION PARTS OFF LCD INDICATION BASS BACK UP A PART TREBLE BACK UP MD INPUT BACK UP B PART TAPE INPUT BACK UP AUX INPUT BACK UP MULTI WINDOW BACK UP...
  • Page 7 RD-VH7 3 7 63 1515 0 CIRCUIT DESCRIPTION 5-4-3 Pickup Movement 5-1-6 Balance Setting Select the level of balance from L-ch, max, R-ch max or description pickup travels outwards and display B center by pressing the MODE key. shows OUTSIDE.
  • Page 8 RD-VH7 3 7 63 1515 0 CIRCUIT DESCRIPTION 9. Common Operation in AUX/TUNER Test 9-2 FAN Operation Mode Display C shows fan condition. Display C 9-1 Bias and Main Volume Level FAN#OFF# Set unit to aux or tuner test mode.
  • Page 9 RD-VH7 CIRCUIT DESCRIPTION 3 7 63 1515 0 10-2 MICROPROCESSOR PIN DESCRIPTION Pin No. Pin Name Descriptin RELAY HP Headphones relay control terminal. RELAY SP Speaker relay control. DISP_RST Reset for communication between display u-COM and u-COM(IC4). DISP CE Chip enable for communication between display u-COM and u-COM(IC4).
  • Page 10 RD-VH7 3 7 63 1515 0 CIRCUIT DESCRIPTION Pin No. Pin Name Descriptin BACK_UP Detection port for backup mode. Unused. 53,54 ENC1/2 Rotary encoder1/2 Input. SL16 DATA SL16 data input/output. SL16 BUSY SL16 busy input/output. STBYLED LED3 standby(red). ON LED LED2 standby(grn).
  • Page 11: Cd Mechanism Description

    RD-VH7 CIRCUIT DESCRIPTION / CD MECHANISM DESCRIPTION 3 7 63 1515 0 CIRCUIT DESCRIPTION CD MECHANISM DESCRIPTION 10-3 CONTROL PORT OF MICROPROCESSOR Mechanism jam cancel method 10-3-1 TILT SENSOR 4 :Move the gear $ for CW with 1. Move a disc with roller your finger î...
  • Page 12 RD-VH7 3 7 63 1515 0 CD MECHANISM DESCRIPTION The initialization position of mechanism is the slider(loading) 1 position at the back most. The mechanism moves from this position. 1. 8cm DISC loading in 1) Insert a disc î Check by a disc detection sensor2 (prism reflection ray OFF) î...
  • Page 13 RD-VH7 CD MECHANISM DESCRIPTION 3 7 63 1515 0 3. Loading out This moving become contrary moving of loading in. Final, a disc touch the 8cm disc eject sensor@ or the 12cm disc eject sensor# î Stop the loading motor3 î...
  • Page 14: Adjustment

    RD-VH7 3 7 63 1515 0 ADJUSTMENT CD section INPUT CD PLAYER OUTPUT ITEM ALIGNMENT ALIGN FOR FIG. SETTINGS SETTINGS SETTINGS TEST MODE : While pressing the PLAY/PAUSE key ,plug the power cord into the AC power wall output. Insert TEST DISC.
  • Page 15: Parts Descriptions

    RD-VH7 3 7 63 1515 0 PARTS DESCRIPTIONS L 13942296513 u163...
  • Page 16: Pc Board

    PC BOARD (Component side view) 3 7 63 1515 0 X14-4960-11 A/6: KMY 2-71: TE (J70-1306-21) X14 D/6 X14 B/6 TUNER L 13942296513 X14 F/6 X14 E/6 X14 C/6 u163 Refer to the schematic diagram for the value of resistors and capacitors.
  • Page 17: Schematic Diagram

    PC BOARD (Component side view) X09 C/4 3 7 6 3 1 5 1 5 0 CN13 CN11 X09-6320-11 A/4: KY 0-21: M 2-71: TE (J70-1305-31) R292 R310 C205 R294 LCD u-COM R304 C216 R302 C203 R168 R291 R144 R170 R289 C210 R159...
  • Page 18 For continued MGND protection against risk of fire, replace only with RD-VH7(K) (1/3) same type and rating fuse(s). To reduce the risk of electric shock, leakage-current or resistance w w w measurements shall be carried out (exposed...
  • Page 19 (X14-496X-XX) (A/6) DESTINATION UNIT No. W21-26 L2-4 C20-24 COUNTRY ABB. 3 7 6 3 1 5 1 5 0 JAPAN 0-00 W02-2672-15 JAPAN U.S.A. 0-11 W02-2673-15 GENERAL MARKET U.K. 2-71 W02-2674-15 EUROPE (X09-6320-00) (B/4) 4.7u6.3 +12V +12V 5.2V C36 10u6.3 5.2V IN Rch 11.8V...
  • Page 20: Parts List

    EXTAL R260 NO USE 4.8V NO USE 5.0V NO USE AVSS NO USE NO USE w w w NO USE NO USE RD(E) u 1 6 3 RD(E) WR(R/W) X09-A/4 WR(R/W) -CN4 4.8V RD-VH7 IC5 : HD6433297A17F RD-VH7(K) (2/3) Y39-3170-11...
  • Page 21 (X09-632X-XX) (A/4) CN10 5V AVR 5.5V B.L.+5V 11 2.2K 3 7 6 3 1 5 1 5 0 B.L.GND 5.0V DATA IN X09-C/4 5.8V -CN11 DATA OUT SCLK R187 -10V RESET WAIT -9.6V -9.6V -10V -9.0V 4.9V -10V ON/OFF 2.2K 2.2u50 2.2K Q1,2...
  • Page 22 : M30622MC-570FP TR10 H.P IN : uPC2905HF : SAA6579T/R : NJM4565M TR16 : S-806D-Z 23.7V IC10 : SI-3050J TR13 PHONES ON/OFF R138 4.7K RD-VH7 (X09-632X-XX) 10.4V 10.5V DESTINATION UNIT No. R122 R238 R239 R240 R243 R244 R245 COUNTRY ABB. JAPAN 0-00...
  • Page 23 RD-VH7 3 7 63 1515 0 EXPLODED VIEW (CD MECHANISM) L 13942296513 SCREW N09-5129-08 N89-2606-46 N09-5113-08 N19-1105-04 N09-3366-08 u163 CDM-34 Parts with exploded numbers larger than 700 are not supplied.
  • Page 24 L 1 3 9 4 2 2 9 6 5 1 3 INPUT/OUTPUT J 3/J 2/J 1 X14 (D/6) X14 (F/6) X14-496 605 622 (A/6) X09 (B/4) 632 633 SYSTEMCONTROL SPEAKERS X09-632 (D/4) DIGTAL OPTICAL X09-632 (A/4) u 1 6 3 RD-VH7 www.denom.net...
  • Page 25 Ref. No Parts No. Description Ref. No Parts No. Description marks ress Parts nation ress Parts nation marks RD-VH7 H10-7574-02 POLYSTYRENE FOAMED FIXTURE H10-7575-02 POLYSTYRENE FOAMED FIXTURE A01-3696-01 METALLIC CABINET H12-2465-04 PACKING FIXTURE A01-3697-01 METALLIC CABINET H20-0576-04 PROTECTION COVER A09-1148-08...
  • Page 26 www.denom.net 3 7 6 3 1 5 1 5 0 New Parts New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No.
  • Page 27 www.denom.net 3 7 6 3 1 5 1 5 0 New Parts New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No.
  • Page 28 www.denom.net 3 7 6 3 1 5 1 5 0 New Parts New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No.
  • Page 29 www.denom.net 3 7 6 3 1 5 1 5 0 New Parts New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No.
  • Page 30 www.denom.net 3 7 6 3 1 5 1 5 0 New Parts New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No.
  • Page 31 www.denom.net 3 7 6 3 1 5 1 5 0 New Parts New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No.
  • Page 32: Specifications

    (3-7/8 in.) Fixed ............... 1.2 V / 1 kΩ D: 291 mm (11-1/2 in.) Weight (net) ..........4.0 kg (8.1 lb) 1. KENWOOD follows a policy of continuous advancements in development. For this reason specifications may u163 Notes Notes be changed without notice.

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