Pioneer DV-989AVi-S Service Manual page 102

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QQ
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A
Carriage does
not move.
(Stepping positioning)
Yes
B
• Laser diode
does not light.
• Focus does
not in.
Yes
C
Spindle
does not turn.
Yes
TE
L 13942296513
Do the video and
sound come on?
or beeing damaged?
(noisy)
D
Yes
OK
E
www
F
102
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• Check the following connections and drive IC :
DVDM Assy CN104 (4P flexible cable)
No
Check the Stepping motor signals, IC351-pin 31, 32, 34, 35 and IC601-pin 47, 48.
• Check the +6V and +12V power supply voltage
(If above voltage is not supplied, check the micro-fuse P202 and P301.)
• Check the following connection, IC351, IC101, IC201 :
DVDM Assy CN101 - Pickup Assy (24P flexible cable)
IC351-pin 9, 10, IC101-pin41 and IC201-pin 32, 47 for Focus Drive
• Check the +6V and +12V power supply voltage and SW+5V
(If +6V voltage is not supplied, check the micro-fuse P101 and P102.)
• Check it whether the pickup is defectiveness.
No
Perform the section "7.1.2 SELF-DIAGNOSIS FUNCTION OF PICKUP DEFECTIVE"
and check the LD current value.
C101 (for DVD LD) and C103 (for CD LD) of DVDM are missing.
• Regarding DVD LD (650nm) :
Check each signals of CN101-pin 17 (PD), pin 18 (LD Drive), IC101-pin 17 and Q101
Regarding CD LD (780nm) :
Check each signals of CN101-pin 17 (PD), pin 16 (LD Drive), IC101-pin 17 and Q102
• Check the following connections and drive IC :
DVDM Assy CN105 (12P flexible cable)
No
Check the Spindle motor signals and IC251-each pins.
• Check the +6V and +12V power supply voltage
(If above voltage is not supplied, check the micro-fuse P202 and P301.)
• Check the following connections :
DVDM Assy - VJKB Assy
DVDM Assy - AJKB Assy
• Check voltage regulator of VJKB Assy IC701-pin 1 (+5V) for Video circuit,
No
Check voltage and transistors requlator of PS Assy Q3801(+12V), Q3802(-12V),
IC3803(+5V)for audio civcnit .
If the voltage is off, check micro fuse of PS Assy IC3801, IC3802.
• Check the interface of 16M SDRAM (IC741) for Eby-chip (IC701) and 64M SDRAM
(IC781) for AV1 (IC751).
• Check digital data of video and audio signals (audio signals: 3 line data, video signals:
8bit data) shown to each schematic diagram and an analog signal line.
In addition, check CLK.
audio system: 22/24MHz, video system: 27MHz
Indicate the error message.
x ao
y
. i
DV-989AVi-S
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3 6 7 1 3
Refer to the section "7.1.6 ERROR DISPLAY".
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2 9 9 4 2 8
PD: Power Diode (signal output)
1 5 0 5 8 2 9 9 4
m
co
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9 9
2 8 9 9