Very detailed product, also it is a scanning from original, very useful if you have to service this type of amplifier ! Very good product, very hard to find!
The service was quick and simple, finding the service manual easy and it appears to be the original with colour schematics. It contained the info I was after and so sorted the problem.
I have copied it to CD and attached the envelope to the inside back cover of the owners manual. Good manual and excelent service. Robin Wood, Wood Electronics, New Zealand.
Exactly what was needed to assess the product - excellent value and great service
Text excerpt from page 16 (click to view)
2-3-3. 3.58 f0 Adjustment
Note 1: ON/OFF of ACC should be performed with BKM127W menu of MAINTENANCE menu. Note 2: The following adjustment menu is below the BKM-127W menu of the MAINTENANCE menu. F0 1. Turn OFF ACC. 2. Input the NTSC color bar signal. 3. Connect TP322 and TP321 (5V) of the BW board using a jumper wire. 4. Connect the oscilloscope to TP421 of the BW board. 5. Adjust the F0 data so that the waveform stops or moves slowly. 6. Turn ON ACC. 7. Disconnect the jumper wire.
2-3-4. Phase Adjustment
Note 1: ON/OFF of ACC should be performed with BKM127W menu of MAINTENANCE menu. Note 2: The following adjustment menus are below the BKM-127W menu of the MAINTENANCE menu. SUB PHASE ACC PHASE R�Y PHASE 1. Input the NTSC color bar signal whose R�Y signal has been turned off. 2. Turn OFF ACC. 3. Connect the oscilloscope to TP421 of the BW board. 4. Adjust the SUB PHASE data so that the TP421 waveform becomes flat. 5. Turn ON ACC. 6. Adjust the ACC PHASE data so that the TP421 waveform becomes flat. TP421
Below 10mV
Fig. 2-5. Fig. 2-4.
7. Input the NTSC color bar signal whose R�Y signal has been turned off. 8. Connect the oscilloscope to TP471 of the BW board. 9. Adjust the R�Y PHASE data so that the TP471 waveform becomes flat. TP471
