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Very quality copy of original service manual, which contains the circuit diagrams, PCB and lists of components, well as recommendation for calibration procedures of device, also everything else, that need for repair, tuning and use this oscilloscope.
All presented copies have high-resolution, so you can view all in detail.
This manual will very useful for simple owners and for repairers.
I recommend these manual, because myself is owner of Philips PM3216 and I need sometimes servicing these oscilloscope (principally calibrating).
Also, these document is an example of excellent design of technical documentation.
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Excellent printing quality.
A complete and very usefull service manual with all details.
GREAT SERVICE AT VERY LOW PRICE!
A+++++++++++++++++++++++++
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manual excelente completo , diagramas y esquemas bien presentados y buena calidad de imagen.
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muy buen manual completo de buena calidad de impresion preciso y detallado , muy útil para la reparación.
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The service manual is a good quality scan of the Panasonic NV-850, which is electrically identical to the Philips VR 6920, but mecanically just nearly.
5
6
7
8
A M
IC152 (pins 2, 5) DDC_RX1
Q
IC101 (pins 58, 59, 62, 63, 66, 67, 70, 71) TMDS_RX2
A
Are signals detected?
No
Check the soldering of CN101. If soldering has not been done correctly, replace CN101.
Do signals (approx. 0.5 Vp-p) run in all the lines?
No
Check the soldering of CN102. If soldering has not been done correctly, replace CN102.
M
Yes
IC152 (pins 3, 6) Are signals the same as those at Pins 2 and 5 detected ? N Yes Q153 (pins 1, 4) Are signals the same as those at Pins No 6 and 3 but whose voltage has been converted from 5V to 3V detected? Yes
R
Yes DDC_RX2 No Check the soldering of CN102. If soldering has not been done correctly, replace CN102.
B
IC172 (pins 2, 5) No Check the soldering of IC152. If soldering has not been done correctly, replace IC152.
Are signals detected?
R
Yes
IC172 (pins 3, 6) Are signals the same as those at Pins 2 and 5 detected ? Check the soldering of IC172. If soldering has not been done correctly, replace IC172.
C
Check the soldering of Q153. If soldering has not been done correctly, replace Q153.
No
S
Yes
O
IC161 (pins 2, 15) Are signals the same as those at Pins 3 and 13 detected immediately after the power is turned on? Yes IC151 (pin 8) No Check the soldering of D151. If soldering has not been done correctly, replace D151.
Q173 (pins 1, 4) Are signals the same as those at Pins 6 and 3 but whose voltage has been converted from 5V to 3V detected? Yes
No
No Check the soldering of IC161. If soldering has not been done correctly, replace IC161.
Check the soldering of Q173. If soldering has not been done correctly, replace Q173.
P
O
IC161 (pins 4, 11)
D
Is the voltage about 5V? Yes
Are signals the same as those at Pins 3 and 13 detected immediately after the power is turned on?
No Check the soldering of IC161. If soldering has not been done correctly, replace IC161.
Check the soldering of IC151. If soldering has not been done correctly, replace IC151.
T
Yes IC171 (pin 8)
Is the voltage about 5V? Yes Replace IC171
No
Check the soldering of D171. If soldering has not been done correctly, replace D171.
E
F
VSX-AX4AVi-S
5 6 7 8
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