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I bought the service-manual of the sony ICB-1020(an old transmitter-receiver) at "www.Owners-Manual.com", I found the service-manual for a fairly cheap price(in comparison with other sellers). I filled in some questions, payed the order with Ideal, and within 24 hours I had my service manual. I was very happy:In no time I had my service-manual and everything, but literally everything was noted down in the manual; the electronic scheme, the parts list, etcetera.
A very practical, reference-document.
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This comprehesive service maual was greatly appreciated, as was the digital download.
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Good en helpfull black and white scanned Srfvice manual of the Philps D8444. Quick service and delivery
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Scan was really good quality, easy to read, download easy
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very good manual as always. easy to read, detailed and includes schematic
PD-117
11. Focus Best Adjustment
Adjust this point only if adjustment was made in item 10.
Test mode SPDL servo = CLOSE FOCUS servo = CLOSE TRKG servo = CLOSE
TEST DISC
MAX
Innermost circumference PLAY (1 TRK)
VR156
MOTHER BOARD ASSY Adjust the RF level to maximum, with the focus error voltage within ±150mV.
Oscilloscope
GND
START
GND
TP1 (CN201)
FE RF VC
Player
DC Mode CH1: 5mV/div CH2: 20mV/div H: 200ns/div Prove (10:1)
6 1 4
MOTHER BOARD ASSY
12. Tracking Servo Loop Gain Adjustment
UNDER Test mode SPDL servo = CLOSE FOCUS servo = CLOSE TRKG servo = CLOSE
TEST DISC
GND GND
Prove (10:1)
UPPER
Innermost circumference PLAY (1 TRK)
JUST
VR151
MOTHER BOARD ASSY Lissajous Waveform
Oscilloscope
X-Y Mode X: 20mV/div Y: 10mV/div
START
TP1 (CN201)
TE TI VC
Player
Prove (10:1)
Low-frequency oscillator
1.2kHz 1Vp-p
Prove (10:1)
2 3 4
100k� GND
MOTHER BOARD ASSY
24
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