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JAMO DVR 50 Service Manual
1
DVR 50 - Rev. 011105-2
Jamo Service manual
DVR 50
Rev. 011105-2
DVR 50
Contents
To service personnel .......... 2 - 4
Faultfi nding .................... 9
Remote control ................................ 56
Specifi cations ........................... 5
Audio board ................. 10
Cabinet ...................................... 57 - 61
DVR 50 diassembly ................. 6
VFD board .................... 23
Cables ............................................... 62
System overview ......................7
MPEG board ................ 25
Legend and abbreviations .............. 63
Block diagram ..........................8
Loader .......................... 54
HOME CINEMA SYSTEM
IMPORTANT NOTICE
This manual is intended for Jamo retailers and their appointed service representatives. Jamo assume that basic service procedures inherent to
the industry, and specifi cally Jamo products, are already known and understood by the users and will for that reason not be restated here.
WARNING
Failure to follow appropriate service and safety procedures when servicing this product may result in personal injury,
destruction of expensive components and equipment or/and shortening the product life or/and failure of the product
to perform as specifi ed. For these reasons Jamo strongly advice product owners that all service required should be
performed by an authorized Jamo retailer or the appointed service representative.
WARNING
Static discharge can destroy expensive components, equipment or/and shorten the product life. Discharge any static
electricity accumulated in your body or materials in the vicinity of the workplace by grounding.
IMPORTANT
This manual does not in its self constitute authorization, certifi cation or establish a principle agent or partner
relationship of any form.
IMPORTANT
Jamo continually strive to improve their products and as a consequence of these modifi cations are inevitable. Specifi cations
are subject to change without notice or obligation to retrofi t. Should any discrepancy appear in this manual, please
contact Jamo Call center.
IMPORTANT
Disconnect all mains power before disassembly or part replacement. Recheck all work before reapplying mains power to the unit.
Summary of DVR 50
Page 1
1 dvr 50 - rev. 011105-2 jamo service manual dvr 50 rev. 011105-2 dvr 50 contents to service personnel .......... 2 - 4 faultfi nding .................... 9 remote control ................................ 56 specifi cations ........................... 5 audio board ................. 10 cabinet ........
Page 2: To Service Personnel
2 dvr 50 - rev. 011105-2 to service personnel warning: chemical content notice the solder used in this product contains lead. In addition, other electrical/electronic and/or plastic components may also contain traces of chemicals found to cause cancer and/or birth defects or other reproduction harm....
Page 3: To Service Personnel
3 dvr 50 - rev. 011105-2 to service personnel prevention of electro static discharge (esd) some semiconductor (solid state) devices can be damaged by static electricity. Such components commonly are called electrostatically sensitive (es) devices. Examples of typical es devices are integrated circui...
Page 4: To Service Personnel
4 dvr 50 - rev. 011105-2 to service personnel preparing jamo products for shipment if possible, use the original packing material for any shipping. Otherwise, repack the product using: • a reinforced cardboard box, strong enough to carry the weight of the product. • at least 6 cm / 2.36 inches of sh...
Page 5: Specifi Cations
5 dvr 50 - rev. 011105-2 specifi cations system .....................................................................................................................................................................Dvd-receiver weight (kg/lb) ..............................................................
Page 6: Dvr 50 Diassembly
6 dvr 50 - rev. 011105-2 dvr 50 diassembly.
Page 7: Dvr 50 System Overview
7 dvr 50 - rev. 011105-2 dvr 50 system overview 1 dvd loader 2 tuner dvd receiver module eu/us 3 psu assy audio dvr 50 4 audio board 5 vfd board 6 mpeg board 5 1 3 6 2 4 top view rear view zoom for more information * for board replacement remove following screws 1 2 3 4 5 7 6 8 9 10 11 12 13 14 15 1...
Page 8: Dvr 50 Block Diagram
8 dvr 50 - rev. 011105-2 dvr 50 block diagram.
Page 9: Dvr 50 Faultfi Nding
9 dvr 50 - rev. 011105-2 dvr 50 faultfi nding the following guide is base on service reports sent in by service partner’s world wide. Try the suggested corrections in the same order as they are listed. Before replacing modules and components always make sure that product in front of you has the late...
Page 10: Dvr 50 Audio Board
10 dvr 50 - rev. 011105-2 dvr 50 audio board replacing the dvr 50 audio board • disconnect the power cord from the ac outlet and take all necessary esd precaution. • remove the lid. (see instruction under lid) • disconnect all cables going to and from the audio board. • unscrew the 4 screws holding ...
Page 11
11 d vr 50 - re v . 011105-2 components having special characteristics or critical for safety are identifi ed by mark and must be replaced with components specifi ed by the manufacturer. Schematic diagram is subject to change without notice. 1 2 3 4 5 a b c d e f schematic diagram - audio board 1/10...
Page 12
12 d vr 50 - re v . 011105-2 components having special characteristics or critical for safety are identifi ed by mark and must be replaced with components specifi ed by the manufacturer. Schematic diagram is subject to change without notice. 1 2 3 4 5 a b c d e f schematic diagram - audio board 2/10...
Page 13
13 d vr 50 - re v . 011105-2 components having special characteristics or critical for safety are identifi ed by mark and must be replaced with components specifi ed by the manufacturer. Schematic diagram is subject to change without notice. 1 2 3 4 5 a b c d e f schematic diagram - audio board 3/10...
Page 14
14 d vr 50 - re v . 011105-2 components having special characteristics or critical for safety are identifi ed by mark and must be replaced with components specifi ed by the manufacturer. Schematic diagram is subject to change without notice. 1 2 3 4 5 a b c d e f schematic diagram - audio board 4/10...
Page 15
15 d vr 50 - re v . 011105-2 components having special characteristics or critical for safety are identifi ed by mark and must be replaced with components specifi ed by the manufacturer. Schematic diagram is subject to change without notice. 1 2 3 4 5 a b c d e f schematic diagram - audio board 5/10...
Page 16
16 d vr 50 - re v . 011105-2 components having special characteristics or critical for safety are identifi ed by mark and must be replaced with components specifi ed by the manufacturer. Schematic diagram is subject to change without notice. 1 2 3 4 5 a b c d e f schematic diagram - audio board 6/10...
Page 17
17 d vr 50 - re v . 011105-2 components having special characteristics or critical for safety are identifi ed by mark and must be replaced with components specifi ed by the manufacturer. Schematic diagram is subject to change without notice. 1 2 3 4 5 a b c d e f schematic diagram - audio board 7/10...
Page 18
18 d vr 50 - re v . 011105-2 components having special characteristics or critical for safety are identifi ed by mark and must be replaced with components specifi ed by the manufacturer. Schematic diagram is subject to change without notice. 1 2 3 4 5 a b c d e f schematic diagram - audio board 8/10...
Page 19
19 d vr 50 - re v . 011105-2 components having special characteristics or critical for safety are identifi ed by mark and must be replaced with components specifi ed by the manufacturer. Schematic diagram is subject to change without notice. 1 2 3 4 5 a b c d e f schematic diagram - audio board 9/10...
Page 20
20 d vr 50 - re v . 011105-2 components having special characteristics or critical for safety are identifi ed by mark and must be replaced with components specifi ed by the manufacturer. Schematic diagram is subject to change without notice. 1 2 3 4 5 a b c d e f schematic diagram - audio board 10/1...
Page 21
21 dvr 50 - rev. 011105-2 electronic compoment data list - audio board refdes part name spec vendor u1 std. Logic,74hc14, hex inv. Schmitt trigger, so14 1 74hct14/74hc14 philips semicondutors u503 std. Logic, 74lvc157a, quad 2-input, so16 1 74lvc157a philips semicondutors u901 std. Logic,74hc00, 5v ...
Page 22
22 dvr 50 - rev. 011105-2 r901 r903 res., 5%, 0603, 1m ohm 2 r1608 1m philips semicondutors r314-319 res., 5%, 0603, 120 ohm 6 r1608 120 ohm anybody following spec. R310 r312 res., 5%, 0603, 150 ohm 2 r1608 150 philips semicondutors r310 r312 res., 5%, 0603, 150 ohm 2 anybody following spec. R520 re...
Page 23: Dvr 50 Vfd Board
23 dvr 50 - rev. 011105-2 dvr 50 vfd board replacing the dvr 50 vfd board • disconnect the power cord from the ac outlet and take all necessary esd precaution. • remove the lid and plastic front. (see instruction under these parts) • disconnect the two cables to the vfd board. • unscrew the 4 screws...
Page 24
24 d vr 50 - re v . 011105-2 components having special characteristics or critical for safety are identifi ed by mark and must be replaced with components specifi ed by the manufacturer. 1 2 3 4 5 a b c d e f schematic diagram - vfd board 1/1 24 schematic diagram is subject to change without notice..
Page 25: Dvr 50 Mpeg Board
25 dvr 50 - rev. 011105-2 replacing the dvr 50 mpeg board: dvr 50 mpeg board rev. 2 ref. No. Item no. Part description pcs. Remarks 1 74104 pcb assy mpeg board dvr-50 1 rev. ≥ 4 • disconnect the power cord from the ac outlet and take all necessary esd precaution. • remove the lid. (see instructions ...
Page 26
Components having special characteristics or critical for safety are identifi ed by mark and must be replaced with components specifi ed by the manufacturer. Schematic diagram is subject to change without notice. 1 2 3 4 5 a b c d e f 26 schematic diagram - mpeg board 1/16 dvd receiver - em8500 page...
Page 27
Components having special characteristics or critical for safety are identifi ed by mark and must be replaced with components specifi ed by the manufacturer. Schematic diagram is subject to change without notice. 1 2 3 4 5 a b c d e f 27 schematic diagram - mpeg board 2/16 psu_stb vcc5v vcc3v3 vcc1v...
Page 28
Components having special characteristics or critical for safety are identifi ed by mark and must be replaced with components specifi ed by the manufacturer. Schematic diagram is subject to change without notice. 1 2 3 4 5 a b c d e f 28 schematic diagram - mpeg board 3/16 i2cm_sck i2cm_sda ide_pd0 ...
Page 29
Components having special characteristics or critical for safety are identifi ed by mark and must be replaced with components specifi ed by the manufacturer. Schematic diagram is subject to change without notice. 1 2 3 4 5 a b c d e f 29 schematic diagram - mpeg board 4/16 v_pll_1v8 xin xout clk_out...
Page 30
Components having special characteristics or critical for safety are identifi ed by mark and must be replaced with components specifi ed by the manufacturer. Schematic diagram is subject to change without notice. 1 2 3 4 5 a b c d e f 30 schematic diagram - mpeg board 5/16 sys_ma4 sys_ma0 sys_ma1 sy...
Page 31
Components having special characteristics or critical for safety are identifi ed by mark and must be replaced with components specifi ed by the manufacturer. Schematic diagram is subject to change without notice. 1 2 3 4 5 a b c d e f 31 schematic diagram - mpeg board 6/16 mpg_sd_dqm3 mpg_sd_dqm2 mp...
Page 32
Components having special characteristics or critical for safety are identifi ed by mark and must be replaced with components specifi ed by the manufacturer. Schematic diagram is subject to change without notice. 1 2 3 4 5 a b c d e f 32 schematic diagram - mpeg board 7/16 ide_pd7 ide_dmarq ide_irq ...
Page 33
Components having special characteristics or critical for safety are identifi ed by mark and must be replaced with components specifi ed by the manufacturer. Schematic diagram is subject to change without notice. 1 2 3 4 5 a b c d e f 33 schematic diagram - mpeg board 8/16 sct-v8 sct-v16 vgahs h s y...
Page 34
Components having special characteristics or critical for safety are identifi ed by mark and must be replaced with components specifi ed by the manufacturer. Schematic diagram is subject to change without notice. 1 2 3 4 5 a b c d e f 34 schematic diagram - mpeg board 9/16 audio-l-out audio-r-out au...
Page 35
Components having special characteristics or critical for safety are identifi ed by mark and must be replaced with components specifi ed by the manufacturer. Schematic diagram is subject to change without notice. 1 2 3 4 5 a b c d e f 35 schematic diagram - mpeg board 10/16 scart-l-out scart-r-out s...
Page 36
Components having special characteristics or critical for safety are identifi ed by mark and must be replaced with components specifi ed by the manufacturer. Schematic diagram is subject to change without notice. 1 2 3 4 5 a b c d e f 36 schematic diagram - mpeg board 11/16 u1_ri u1_cts u1_rts j_uar...
Page 37
Components having special characteristics or critical for safety are identifi ed by mark and must be replaced with components specifi ed by the manufacturer. Schematic diagram is subject to change without notice. 1 2 3 4 5 a b c d e f 37 schematic diagram - mpeg board 12/16 flex_md5 flex_md2 flex_md...
Page 38
Components having special characteristics or critical for safety are identifi ed by mark and must be replaced with components specifi ed by the manufacturer. Schematic diagram is subject to change without notice. 1 2 3 4 5 a b c d e f 38 schematic diagram - mpeg board 13/16 vcc3v3 vcc3v3 vcc3v3 vcc3...
Page 39
Components having special characteristics or critical for safety are identifi ed by mark and must be replaced with components specifi ed by the manufacturer. Schematic diagram is subject to change without notice. 1 2 3 4 5 a b c d e f 39 schematic diagram - mpeg board 14/16 optical-in coaxial-in vcr...
Page 40
Components having special characteristics or critical for safety are identifi ed by mark and must be replaced with components specifi ed by the manufacturer. Schematic diagram is subject to change without notice. 1 2 3 4 5 a b c d e f 40 schematic diagram - mpeg board 15/16 tun_rdsdata tun_rdsclk tu...
Page 41
Components having special characteristics or critical for safety are identifi ed by mark and must be replaced with components specifi ed by the manufacturer. Schematic diagram is subject to change without notice. 1 2 3 4 5 a b c d e f 41 schematic diagram - mpeg board 16/16 stb3v3 stb3v3 stb3v3 stb3...
Page 42
42 dvr 50 - rev. 011105-2 electronic compoment data list - mpeg board refdes part name qty spec vendor u3-4 memory, sdram,143mhz,2m*32, 86tsop 2 k4s643232e-tc/l70 samsung electronics u3-4 memory, sdram,143mhz,2m*32, 86tsop 2 mt48lc2m32b2tg-7 micron tecnology inc. U3-4 memory, sdram,143mhz,2m*32, 86t...
Page 43
43 dvr 50 - rev. 011105-2 d1-4 d12-24 d28 d32-43 diode, dual, bav99 fdso1203 sot-23 30 bav99 iit d1-4 d12-24 d28 d32-43 diode, dual, bav99 fdso1203 sot-23 30 bav99 philips semicondutors d1-4 d12-24 d28 d32-43 diode, dual, bav99 fdso1203 sot-23 30 mmbd1203-high national semiconductor corp. X1 x-tal, ...
Page 44
44 dvr 50 - rev. 011105-2 c212 c216 c222 c224 c226 c228 cap. Cer., 10%, 0603, 3.3nf 6 c1 c8 c12-14 c17 c19-20 c23-24 c28 c31-32 c36 c42-45 c52-53 c56-58 c60- 62 c103 c106 c129 c131-132 c135-136 c167 c172 c175 c229 c236-237 c256 c300 c304 c311 c313 c2000-2001 c2003-2006 cap. Cer., 20%, 0603, 100nf, y...
Page 45: Dvr 50 Turner Eu/us
45 dvr 50 - rev. 011105-2 dvr 50 turner eu/us rev. 2 replacing the dvr 50 tuner: • disconnect the power cord from the ac outlet and take all necessary esd precaution. • remove the lid. (see instructions under lid) • disconnect and remove the tuner cable. • unscrew the tuner and replace with new. 44-...
Page 46: Dvr 50 Psu/amp Board
46 dvr 50 - rev. 011105-2 dvr 50 psu/amp board rev. 2 replacing the dvr 50 psu/amp fig. 44-0398/2 • disconnect the power cord from the ac outlet and take all necessary esd precaution. • remove the lid. (see instructions under lid) • disconnect all cables going to and from the psu board and mpeg boar...
Page 47
47 d vr 50 - re v . 011105-2 1 2 3 4 5 a b c d e f schematic diagram - psu/amp board 1/7 47 components having special characteristics or critical for safety are identifi ed by mark and must be replaced with components specifi ed by the manufacturer. Schematic diagram is subject to change without not...
Page 48
48 d vr 50 - re v . 011105-2 1 2 3 4 5 a b c d e f schematic diagram - psu/amp board 2/7 48 components having special characteristics or critical for safety are identifi ed by mark and must be replaced with components specifi ed by the manufacturer. Schematic diagram is subject to change without not...
Page 49
49 d vr 50 - re v . 011105-2 components having special characteristics or critical for safety are identifi ed by mark and must be replaced with components specifi ed by the manufacturer. Schematic diagram is subject to change without notice. 1 2 3 4 5 a b c d e f schematic diagram - psu/amp board 3/...
Page 50
50 d vr 50 - re v . 011105-2 components having special characteristics or critical for safety are identifi ed by mark and must be replaced with components specifi ed by the manufacturer. Schematic diagram is subject to change without notice. 1 2 3 4 5 a b c d e f schematic diagram - psu/amp board 4/...
Page 51
51 d vr 50 - re v . 011105-2 pwm-oa-5 pwm-ob-5 pvdda-5 pvddb-5 pvdda-5 pvddb-5 pwm-oa-5 pwm-ob-5 gate-drv-sup gate-drv-sup gate-drv-sup +25v /sd-err +3.3v /valid-5 pwm-m-5 pwm-p-5 pwm-p-6 /valid-6 pwm-m-6 +3.3v /sd-err /sd-e +12v lfe-out gate-drv-sup +5vsb -12v title size document number r e v cente...
Page 52
52 d vr 50 - re v . 011105-2 components having special characteristics or critical for safety are identifi ed by mark and must be replaced with components specifi ed by the manufacturer. Schematic diagram is subject to change without notice. 1 2 3 4 5 a b c d e f schematic diagram - psu/amp board 6/...
Page 53
53 d vr 50 - re v . 011105-2 1 2 3 4 5 a b c d e f schematic diagram - psu/amp board 7/7 53 mclk s d in1 s d in2 s d in3 sclk lrclk sda scl /mute /rst /sd-e lfe-out +5v +12v -12v +12v +25v +25v ground gate-drv-sup +3.3v +5vsb +5vsb -12v title tas5110 amplifier from psu +25v and the gate-drv-sup is s...
Page 54: Dvr 50 Loader
54 dvr 50 - rev. 011105-2 dvr 50 loader rev. 2 • disconnect the power cord from the ac outlet and take all necessary esd precaution. • remove the lid and plastic front. (see instruction under these parts) • disconnect and unscrew the loader (44-0396/7) • make sure that the rubber tape isn’t removed....
Page 55
55 dvr 50 - rev. 011105-2 how to take of 1802 loader front panel 1 2 3 4 5 6 7.
Page 56: Dvr 50 Remote Control
56 dvr 50 - rev. 011105-2 dvr 50 remote control ref. No. Item no. Part description pcs. Remarks 1 74122 remote control dvr 50 1 standart model.
Page 57: Lid Grey Dvr 50
57 dvr 50 - rev. 011105-2 lid grey dvr 50 replacing the lid grey dvr 50 • disconnect the power cord from the ac outlet and take all necessary esd precaution. • remove the lid screws (7 screws in all) 44-0402/4/5 • gently pull both sides of the lid out and open the dvr 50 unit. 44-0402/2 • the fore-e...
Page 58
58 dvr 50 - rev. 011105-2 chassis sub assy w/feet dvr-50 replacing the dvr 50 chassis sub. Assy ref. No. Item no. Part description pcs. Remarks 1 74108 chassis sub assy w/feet dvr-50 1 comes whitout the loader brackets • disconnect the power cord from the ac outlet and take all necessary esd precaut...
Page 59: Dvr 50 Plastic Front
59 dvr 50 - rev. 011105-2 dvr 50 plastic front replacing the dvr 50 plastic front ref. No. Item no. Part description pcs. Remarks 1 74109 ass plastic front “eu” dvr-50 1 comes whitout the vfd board 1 74110 ass plastic front “us” dvr-50 1 comes whitout the vfd board fig. 44-0399/2 fig. 44-0399/5 fig....
Page 60: Rear Black Dvr-50
60 dvr 50 - rev. 011105-2 rear black dvr-50 replacing the rear black dvr-50 ref. No. Item no. Part description pcs. Remarks 1 74111 rear black dvr-50 1 comes whitout the serial number label • disconnect the power cord from the ac outlet and take all necessary esd precaution. • remove the lid. (see i...
Page 61
61 dvr 50 - rev. 011105-2 plastic part dvd front dvr-50 replacing the dvr 50 plastic part ref. No. Item no. Part description pcs. Remarks 1 74112 plastic part dvd front dvr-50 1 • connect the power cord to the ac outlet and turn on the dvr 50. • press load (eject) on the remote control or on the fro...
Page 62: Dvr-50 Cables
62 dvr 50 - rev. 011105-2 dvr-50 cables ref. No. Item no. Part description pcs. Remarks 1 74113 cable, ribbon, 265mm, 40 pole, grey dvr-50 5 2 74114 cable, 4p,235mm,3.96/5.08mmpitch,yel, bl, bl,r dvr-50 5 3 74115 cable, 190mm,6p,main-vfd,2.0/2.0mm dp450 dvr-50 5 4 74116 cable, harness 6p pitch 2.0/2...
Page 63: Legend and Abbreviations
63 dvr 50 - rev. 011105-2 legend and abbreviations speaker units: w = woofer mid / sq = midrange (squawker) t / tw = tweeter st = super tweeter sw = subwoofer below is the color code for wire connections brown: connected to terminal “+” (bi-wiring at “low” terminal) orange: connected to terminal “-”...