Text preview for : Philips_VCR-DVD_service_bulletins_and_tips.rar part of Philips VCR-DVD service bulletins and tips Philips Video Philips_VCR-DVD_service_bulletins_and_tips.rar



Back to : Philips_VCR-DVD_service_b | Home

PHILIPS VCR/DVD service bulletins 1
HOME
PHILIPS VCR/DVD service bulletins and tips


MODEL/CHASSIS: 23DV1
SYMPTOM: Supply does not start, D6115 defective
CURE: Replace diode 6115 on supply MSM1 by a 1N4148 (4822 130 30621)

MODEL/CHASSIS: 23DV1
SYMPTOM: AUTOSTORE skips transmittors
CURE: In case of high RF voltages (> 80DB UV), some transmittors are not stored.
Solution: Modify time-constant in RF-AGC circuit: R3720 becomes 1kOhm. C2724
becomes 10 uF. Introduced in production from week 9319 onwards.

MODEL/CHASSIS: 23DV1
SYMPTOM: Audio not recorded; previous audio not erased
CURE: Remove connector from cable of erase-head and solder the wires directly on
the erase-head. Check also whether metal-flakes are present in the flatcable
connection of the audio-sync head. Note: touching the wires can already hide the
complaint!

MODEL/CHASSIS: 23DV1
SYMPTOM: Rattle during fast-forward
CURE: If a Turbo-drive with Fast-Forward problems is brought-in for service,
Check first of all whether thooth-wheels 116 and 117 sufficiently grip in each
other. If these tooth-wheels rattle-over-each-other during fast forward, replace
following components: pos. 116 (changing gear) and pos. 117 (double gear). These
components are delivered in KIT I (SBC7118). Also replace the clutch lever by a
special version (coulour = black; 4822 403 71173.

MODEL/CHASSIS: 23DV1
SYMPTOM: Spare part information
CURE: Spare part information A repair kit , containing PULLEY SHAFT + WORM SHAFT
(POS. 47+48) is delivered with codenumber 4822 310 10657. This kit can be used
for all TURBO- and ECO mechanisms !

MODEL/CHASSIS: 23DV1
SYMPTOM: Modification
CURE: Modification From DECK production code WD22 onwards, a new lift has been
applied (Sets production code WD40 or RJ12). For old sets, the codenumber for
the lift assembly 4822 443 63702 remains unchanged (but delivered with new lift
and kit L). For new sets, the codenumber is 4822 443 64112. Herefor, a new kit L
is introduced: 4822 310 32116. Removing and mounting of the new lift can be
executed in all deck- positions, except EJECT.

MODEL/CHASSIS: 23DV1
SYMPTOM: Modification
CURE: Modification For a better performance of the erase oscillator, the
following components are modified in production: POS. 2620 - 47 nF - 4822 121
51655 POS. 2622 - 33 nF - 4822 121 43996

MODEL/CHASSIS: 23DV1
SYMPTOM: Codenumbers deckprocessors
CURE: Codenumbers deckprocessors Sets produced with factory code < WD30 use the
intel video controller with mask version MMTD2-XU. (4822 209 32506) Sets
produced with factory code WD30 and higher use the Toshiba video controller with
mask version MMTD4-XU. (4822 209 32736) When replacing the deck-up, pls. order
the correct version (Intel or Toshiba)

MODEL/CHASSIS: 24DV1
SYMPTOM: Audio not recorded; previous audio not erased
CURE: Remove connector from cable of erase-head and solder the wires directly on
the erase-head. Check also whether metal-flakes are present in the flatcable
connection of the audio-sync head. Note: touching the wires can already hide the
complaint!

MODEL/CHASSIS: 24DV1
SYMPTOM: Spare part information
CURE: Spare part information A repair kit , containing PULLEY SHAFT + WORM SHAFT
(POS. 47+48) is delivered with codenumber 4822 310 10657. This kit can be used
for all TURBO- and ECO mechanisms !

MODEL/CHASSIS: 24DV1
SYMPTOM: Modification
CURE: Modification For a better performance of the erase oscillator, the
following components are modified in production: POS. 2620 - 47 nF - 4822 121
51655 POS. 2622 - 33 nF - 4822 121 43996

MODEL/CHASSIS: 24DV1
SYMPTOM: Codenumber correctionon
CURE: Codenumber correction - The codenumber of the front-cover (POS.22) has to
be 4822 443 64166

MODEL/CHASSIS: 2SB11
SYMPTOM: Set dies not react on Remote Control
CURE: Check and replace if necessary the IR receiver on the display PCB. - for
sets with IC7120: 4822 218 10216 - for sets without IC7120 : 4822 214 33534

MODEL/CHASSIS: 2SB11
SYMPTOM: Updated control microprocessor
CURE: Updated control microprocessor The operating control microprocessor,
position number 7101, on the control panel of the above VCRs has been updated to
KSDC2-4U for the VR312 & VR322 and KSDC3-4U for the 2SB11. Earlier versions
ended in 3, 2 or 1U. The code numbers remain unchanged : - The code for KSDC2-4U
is 4822 209 63853. The code for KSDC3-4U is 4822 209 63854. When fitting
processors with suffix 4U in VCRs previously fitted with earlier versions the
following components should be removed from the operating panel : - Resistors
3013, 3014, 3015, 3017 and capacitor 2003. The clock frequency should then be
readjusted as described in the service documentation. From week 9225 the above
changes took place in production. This service tip does not apply to VCRs in the
same range that are fitted with OSD. REMARKS : On page 4-3 of the service
documentation for the VR312 etc. (code no. 4822 726 14925) the processor IC7101
with the code no. 4822 209 63854 is incorrectly quoted as being KSDC1. It should
read KSDC3.

MODEL/CHASSIS: 2SB11
SYMPTOM: Production change
CURE: Production change - In VCRs with production code WD01 only, instead of the
fuse 1005 (125V/250mA) on the family board a coil 5005 is fitted. It is not
necessary to change the coil for a fuse in VCRs WD01 unless the coil is
defective. The fuse is wire ended and therefore when used to replace the coil it
will fit in the holes previously used by the coil. The service documentation
shows the fuse in both the circuit diagram and the board layout. However the
legend of the board layout lists fuse 1005 in the 5- grouping. The code no for
coil 5005 (22