Happy to find finally a schematic for this amplifier. The schematic is of good quality, the pcb layout is useless: all is black. Never the less, it is very easy to find the components on the board using the schematics.
Hard to find manual was ready the next day. Scans were very legible (including schematics). All the essential parts of the service manual were present (adjustment procedure, schematics, and parts list). It would have been nice if the rest of the manual was included (disassembly procedure, theory of operation, etc.).
The Service Manual for the Kenwood KR-V55R provided by owner-manuals.com was as described/advertised. The contents provided the necessary information to effect a diagnosis of the unit. The schematics above all else was instrumental in tracing the the signal flow from component to component.
This manual was the factory original. Excellent value and contained all the details I needed. Easy dowwnload provided the information when I needed it.
Impeccable, document très complet. Perfect, i get all i need. All schematic are correct. Thanks
Text excerpt from page 22 (click to view)
HCD-EX5
[Aging In Mode] Procedure: 1. Press the ?/1 button to turn the set ON. 2. Select the FUNCTION to CD. 3. To enter the test mode, press three buttons VOLUME + , > and Z simultaneously. 4. Confirm that �dvt AGING� is displayed. 5. Press the Z button. 6. Confirm that �dvt AGING SL� is displayed. Releasing Method of Test Mode 1. Press the x button to display �dvt AGING�. 2. Press the x button again. Menu Selection of Aging Selection Mode 1. Select the operation in the menu by pressing the . or > button. 2. Press the Z button. The menu is selected. 3. Press the x button to return to the menu again. SELECTION OF AGING AND START Y DISPLAY OF TIMES OF AGING �dvt AGING SL� �dvt AGING DP�
[Error History Display Mode] Procedure: Setting Method of Test Mode 1. Press the ?/1 button to turn the set ON. 2. Select the FUNCTION to CD. 3. To enter the test mode, press three buttons Z , VOLUME + , and NX simultaneously. 4. Confirm to display �dvt ERR CODE�. 5. Press the Z button. Releasing Method of Test Mode 1. Press the x button to display �dvt ERR CODE�. 2. Press the x button. Menu Selection of Error History Display Mode 1. Select the operation in the menu by pressing the . or > button. 2. Press the Z button. The menu is selected. If returning to the menu again, press the x button.
DISPLAY OF TIMES OF ERROR DISPLAY OF MECHANISM ERROR HISTORY " Emc=**Edc=## " " dvt ECODE MEC "
Selection of Aging and Start 1. Confirm that �AGING SEL=00� is displayed. 2. Select the aging operation in the menu by pressiing the . or > button. Normally �00� is suitable. 3. Press the Z button. 4. Aging operation starts automatically. DISPLAY : �AGING SEL = ##� ## : type of aging 00 : OPEN c CHUCK c the first track playback c the last track playback c OPEN c CHUCK c � 01 to 03 : not for service 04 : the first track playback c the last track playback c the first track playback c � 05 to o6 : not for service Display of Times of Aging 1. Confirm that �dvt AGING DP� is diplayed. 2. Press the Z button. DISPLAY : �AGING********� ******** : 0 to FFFFFFFF (hexadecimal) times of aging cycle executed Releasing Method of Aging Operation Press the ?/1 button to turn off the set.
RESET OF MECHANISM ERROR HISTORY RESET OF ERROR HISTORY RESET OF NO DISC ERROR HISTORY DISPLAY OF NO DISC ERROR HISTORY
" dvt ECNT0 MEC " " dvt ECNT0 ALL " " dvt ECNT0 BU " " dvt ECODE BU "
Display of Times of Error * Number of times of mechanism error and no disc error is displayed in hexadecimal. DISPLAY : � Emc=**Edc=## � ** : number of times of mechanism error (hexadecimal) ## : number of times of no disc error (hexadecimal) Display of Mechanism Error History 1. Select the operation in the menu by pressing the . or > button to display �dvt ECODE MEC�. 2. Press the Z button. 3. Select the mechanism error code by pressing the . or > button.