Sony AVD-K150B / AVD-K150E / AVD-K150G / AVD-K150N / AVD-K150R / DAV-D150B / DAV-D150E / DAV-D150G / DAV-D150N Service Manual ▷ View online
25
AVD-K150B/K150E/K150G/K150N/K150R
3. Y/C CIRCUIT
(3) When the C(Color) signal doesn’t appear on the screen in PB Mode,
Is 5.2VT/5.3VA applied to the
IC301 Pins24, 42, 55, 72, 91.
IC301 Pins24, 42, 55, 72, 91.
Is the Color Rotary signal
applied to the IC301
Pin70?
applied to the IC301
Pin70?
Check the line of the 5.2VT/
5.3VA Line. (Power Circuit)
Replace the X301.
Check the Color Pass.
Check the Color Rotary
Circuit. (IC501 Pin99 )
Check the Color Rotary
level. (Check the R303)
level. (Check the R303)
Does the X301(4.43MHZ)
oscillate?
oscillate?
Replace the IC301.
Does the Color signal
appear at the IC301 Pin21?
appear at the IC301 Pin21?
Is Color Rotary “H”
about 3.4V?
about 3.4V?
Replace the IC301.
NO
NO
NO
YES
YES
YES
YES
NO
NO
NO
YES
Does the Color signal
appear at the IC301
Pin25 ?
appear at the IC301
Pin25 ?
26
AVD-K150B/K150E/K150G/K150N/K150R
3. Y/C CIRCUIT
(4) When the Video signal doesn’t appear on the screen in REC Mode,
Is the EE signal normal?
Is 5.2VT/5.3VA applied to the
IC301 Pins24,42,55,72,91?
IC301 Pins24,42,55,72,91?
Does the RF signal appear
at the IC301 Pin78?
at the IC301 Pin78?
Check EE Mode.
Check the System of REC
‘H’. (the IC501 Pin47
/ the D301)
‘H’. (the IC501 Pin47
/ the D301)
Replace the IC301.
Check the line of the 5.2VT/
5.3VA Line.(Power Circuit)
5.3VA Line.(Power Circuit)
Check PB Mode.
Is the REC ‘H’ signal
(about 4V) applied to the
IC301 Pin80?
(about 4V) applied to the
IC301 Pin80?
Check the circuit of the
IC301 Pins85, 86.
IC301 Pins85, 86.
Check REC Luminance
Pass & Color Pass.
Pass & Color Pass.
Does PB Mdoe operate
normally?
normally?
Does the REC RF signal
appear at the IC301
Pins88,89,94,95?
appear at the IC301
Pins88,89,94,95?
Check the Drum &
Drum Connector
Drum Connector
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
YES
YES
YES
27
AVD-K150B/K150E/K150G/K150N/K150R
5. Hi-Fi CIRCUIT
(A) No Sound(EE Mode)
YES
No Sound.
Check the TU Audio of IC801
Pins1, 3.
Pins1, 3.
Check the DVD Audio of IC801
Pins4, 5.
Pins4, 5.
Check the AV1 Audio of IC801
Pins6, 7.
Pins6, 7.
Check the AV2 Audio of IC801
Pins8, 9.
Pins8, 9.
Check the AV3 Audio of IC801
Pins10, 11.
Pins10, 11.
Check the Vcc of IC801 Pins34, 40,
IC802 Pin4.
IC802 Pin4.
YES
Check the IIC Clock and DATA at
IC801 Pins42, 43, IC802 Pins32, 33.
IC801 Pins42, 43, IC802 Pins32, 33.
YES
Check the Audio of IC801 Pins16, 17.
YES
Check the Audio of IC802 Pins22, 26.
YES
Check the JK801.
Check the IC751 Pins30, 31.
NO
Check the DVD MODULE.
(P8D01 Pins3, 5).
(P8D01 Pins3, 5).
NO
Check the Scart1 Jack.
(SC901 Scart1 Audio in Pins2, 6).
(SC901 Scart1 Audio in Pins2, 6).
NO
Check the front Jack.
(PM602 Pins3, 5).
(PM602 Pins3, 5).
Check the Scart2 Jack.
(SC901 Scart2 Audio in Pins2, 6).
(SC901 Scart2 Audio in Pins2, 6).
NO
NO
Check the Power 5.2V, 12VT.
YES
NO
Check the IC501 Pins59, 60.
NO
Replace IC801.
Replace IC802.
NO
NO
28
AVD-K150B/K150E/K150G/K150N/K150R
3. Y/C CIRCUIT
(B) Hi-Fi Playback
YES
YES
YES
YES
PB mode
No Sound.
Check the Vcc of IC801
(Pins34, 40)
(Pins34, 40)
Check the Hi-Fi Selection switch.
(IC801 Pin41) and the Tape quality.
(IC801 Pin41) and the Tape quality.
Is the RF Envelope at
IC801 Pin44 over 2Vp-p?
IC801 Pin44 over 2Vp-p?
YES
Check IC801 Pin42(Data),
Pin43(Clock)
Pin43(Clock)
YES
Do Audio Signals appear at
IC801 Pin16(L-CH), 17(R-CH)?
IC801 Pin16(L-CH), 17(R-CH)?
YES
Do Audio Signals appear at
IC802 Pin10(L-CH), 16(R-CH)?
IC802 Pin10(L-CH), 16(R-CH)?
YES
YES
YES
Do Audio Signals appear at
IC802 Pins22, 26?
IC802 Pins22, 26?
Do Audio Signals appear at
JK801?
JK801?
Check Power 5.2V, 12VT.
NO
Check IC501 Pin25
(A.H/SW)
(A.H/SW)
NO
NO
Check the parts of
µ
-COM
(IC501 Pins59, 60)
NO
Check the Connection at
P3D01 Pins7, 9.
P3D01 Pins7, 9.
NO
Check the A.IN line of
IC802(C808, C809)
IC802(C808, C809)
NO
Check the Vcc of IC802
Pin4.
Pin4.
Replace IC802.
Check the Jack(JK801)
NO
NO
Check Power.
NO
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