This is a good quality scan of the service manual which includes an assembly diagram, block diagram, schematic, and parts list. Exactly what is needed to repair my KR-V55R receiver.
Text excerpt from page 4 (click to view)
Alignment and Adjustments
1-2-3 To Adjust Recording Level
NOTES 1) Connect the measuring instruments as shown in Figure 1-7. 2) Set the DOLBY NR Switch off. 3) Measuring tape: MTT-5512 (or equivalent: normal recording) 4) The input signals supply 400Hz 400mV into AUX IN of AMP (AUDIO OSC.)
Step
Item
Pre-Setup Condition
Pre-Setup
To Adjust
Standard
Remark
1
BIAS Electric current
Connect to JCW2 as in Figure 1-7 and read the VTVM
Insert MTT-5512 into L-CH: JSR1L and Deck2, then press REC button. R-CH: JSR1R to the right and left 25 mV
See diagram for adjustment locations
VTVM Audio OSC. Cassette Deck
SPK OUT IN AUX IN JCW2
