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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
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I'm very satisfied with your manual service. Your website made it easy to locate the correct manual. Also the quality is great and I never had a problem reading the fine details.
Thanks again.
Jeff Miller
JM Electronics
TAPE DECK SECTION
0 dB= 0.775 V
Adjustment Location: PB head
1. The adjustments should be performed in the order given in this service manual. 2. The adjustments should be performed for both L-CH and R-CH. Test Tape
Type P-4-A063 WS-48A Signal 6.3 kHz, �10 dB 3 kHz, 0 dB Used for head azimuth adjustment tape speed adjustment
FWD
   adjustment  screws REV 
PB Head Azimuth Adjustment Procedure: 1. Put the set into the FWD PB mode.
test tape P-4-A063 (6.3 kHz, �10 dB) 4� set
+ �
level meter
speaker out terminal (1300R) or AUDIO OUT jack (CN400) (C2300R)
2. Turn the screw and check the output peak value. Adjust the screw so that the peak value in channels L and R coincides within 2 dB.
See the adjustment location from on page 16 for the adjustment. Tape Speed Adjustment Setting:
L-CH peak output level
within 2 dB within 2 dB
screw position
R-CH peak L-CH peak R-CH peak
test tape WS-48A (3 kHz, 0 dB)
angle
speed checker or frequency counter 4� set � + speaker out terminal (1300R) or AUDIO OUT jack (CN400) (C2300R)
3. Check the phase in the FWD PB mode.
test tape P-4-A063 (6.3 kHz, �10 dB) L-CH set 4� V+ + H �� R-CH 4� speaker out terminal (1300R) or AUDIO OUT jack (CN400) (C2300R) Screen pattern
oscilloscope
Procedure: 1. Put the set into the FWD PB mode. 2. Adjust adjustment resistor for inside capstan motor so that the reading on the speed checker or frequency counter becomes in specification. Specification: Constant speed
Speed checker �2 to +3% Frequency counter 2,940 to 3,090 Hz
Adjustment Location: See page 16.
in phase 45 ° good
90 ° 135 ° 180 ° wrong
4. Repeat the above adjustment for the REV PB mode. 5. Check that output level difference between FWD PB mode and REV PB mode is within 4 dB.
13
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