Toshiba Dvr4xsu Owners Manual

TROUBLESHOOTING  GUIDE
E-35
D-VR4XSU/D-VR4XSC
NO PLAYBACK PICTURE OF
S-VIDEO JACK
Is there Y signal at
pin A9 of IC4001 ?
Yes
No
Check CP7304 connection
to CP8301.
YesNoCheck IC4001 and
peripheral circuit.
Is there Y signal at pin
6 of CP8301 ?
Check J8003 and
peripheral circuit.
Check IC8301 and
peripheral circuit.
YesNo
Is there Y signal at pin
36 of IC8301 ? 

TROUBLESHOOTING  GUIDE
E-36
D-VR4XSU/D-VR4XSC
NO COLOR PLAYBACK PICTURE
OF S-VIDEO JACK
YesNo YesNo
Check IC4001 and
peripheral circuit.
Is there C signal at
pin 2 of CP8301 ?
Is there C signal at
pin D11 of IC4001 ?
Check CP7304 connection
to CP8301.
Check J8003 and
peripheral circuit.
Check IC8301 and
peripheral circuit.
YesNo
Is there C signal at pin
34 of IC8301 ? 

TROUBLESHOOTING  GUIDE
E-37
D-VR4XSU/D-VR4XSC
NO PLAYBACK PICTURE OF
YUV JACK
Is there Y signal at
pin B16 of IC4001 ?
Yes
No
Check CP7304 connection
to CP8301.
YesNoCheck IC4001 and
peripheral circuit.
Is there Y signal at
pin 8 of CP8301 ?
Check J8006 and
peripheral circuit.
Check IC8301 and peripheral
circuit.
YesNo
Is there Y signal at
pin 46 of IC8301 ? 

TROUBLESHOOTING  GUIDE
E-38
D-VR4XSU/D-VR4XSC
NO COLOR PLAYBACK
PICTURE OF YUV JACK
YesNo YesNoCheck IC4001 and peripheral
circuit.
Is there U & V signals
at pin 10 and 12 of
CP8301 ? Is there U &V signals at
pin A11 and A17 of IC4001
?
Check CP7304 connection
to CP8301.
Check J8006 and
peripheral circuit.
YesNo Is there U & V signals
at pin 44 and 45 of
IC8301 ?Check IC8301 and peripheral
circuit. 

TROUBLESHOOTING  GUIDE
E-39
D-VR4XSU/D-VR4XSC
 NO AUDIO ON PLAYBACK
Is there AUDIO signal at pin 7
and 8 of IC7301 ?
No
No
Check IC7301 and peripheral
circuit.
Yes Yes
Check IC7303 and peripheral
circuit.
Is there waveform at pin
1 and 7 of IC7303 ?
Check J8004 and peripheral
circuit.
No
YesCheck CP7303 connection
to CP8303. Is there waveform at pin
1 and 3 of CP8303 ? 

TROUBLESHOOTING  GUIDE
E-40
D-VR4XSU/D-VR4XSC
NoCheck VCR block.
Yes
Check VCR block. VIDEO CAN NOT
RECORD TO DVD
No
YesCheck IC8501 and peripheral
circuit. Is there a signal in at
pin Y2, W4, Y3, Y4, AA1,
AA2, Y6, AA3, AA5 and
AB1 of IC4001 ?
No
YesCheck pin 5, 11 and 19 of
IC8501.
No
YesCheck IC4001, DVD DECK
and peripheral circuit. Is there a signal out at
pin B16, A11, A17, A9
and D11 of IC4001 ? Is there a signal in at pin 1, 3
and  5 of CP7304 with each
input ?
Is there a composite
signal in at pin...

TROUBLESHOOTING  GUIDE
E-41
D-VR4XSU/D-VR4XSC
NoCheck VCR block.
Yes
Check VCR block.  AUDIO CAN NOT
RECORD TO DVD
Is there a signal in at pin 1
and 2 of IC7302 with each
input ?
No
YesCheck IC7301 and peripheral
circuit. Is there a signal in at pin
7 and 8 of IC7301 ?
No
YesCheck IC7302 and peripheral
circuit. Is there a signal in at pin
F10 of IC4001 ?
No
YesCheck IC4001, DVD DECK
and peripheral circuit. Is there a signal in at pin 1,
2 and 3 of IC7301 ? 

120
204
204
204
204
204
141
MECHANICAL EXPLODED VIEW
206
101A 101L
101N
101M101G
101M
101G
101Q
101R101K
101L
101P
101F
101V
101T
101X
101U
101U
101D
101C
101H
101B
101J
101K101O
108
101W
101I
101E
101S
PCB270
(OPERATION 1 PCB ASSY)
209
110
111
209
209
209
PCB280
(OPERATION 2 PCB ASSY) 206
101
122
122
PCBDP0
(DISPLAY PCB ASSY)
206
113
113206
103104 104105
106
107
107
116
PCB010
(VCR PCB ASSY)
210
121
115
201
201
126
205
203
203 PCB240
(POWER PCB ASSY)
203
205
207
203
202
114
112
102A
102
102B203
203
127...

132
MECHANICAL EXPLODED VIEW
(PACKING DIAGRAM)
TM601
130131
129128
135, 136, 137, 138, 139, 140, 142
131CD6002, CD6003
134
133
J1-2 D-VR4XSU/D-VR4XSC 

CHASSIS EXPLODED VIEW (TOP VIEW)
505
503
503
UN4001
M2003CD1501
321
AA
AA
AAAA
309
325
AA
312
315
504
H5001
503
306
305
332
507
335342
322508
324
319
506
501
H5002
323
508
341
331
334333
314
301
313
307
300
316
336
302
345
317
AA
AA
AA
AAAAAA
AA
AA
AA
AA
AA
AA
M101
304
CD1502
510
318
Applying positions AA for the grease are displayed for this section.
Check if the correct grease is applied for each position.NOTE:
CLASS
GREASEMARK
AA
J2-1 D-VR4XSU/D-VR4XSC